Why insurance sector HVAC is its own discipline
Insurance and reinsurance HVAC is one of the most heavily constrained office HVAC environments in Australia. A Premium Grade tower built for a generic professional services tenancy can be specified against the standard NABERS, AS 1668 and SMACNA envelope. An insurance headquarters or a claims call centre cannot. The facility carries an additional layer of regulatory, operational and physical security overlays — APRA Prudential Standard CPS 230 (Operational Risk Management) which took effect in July 2025, APRA Prudential Standard CPS 234 (Information Security), the General Insurance Code of Practice administered by the Insurance Council of Australia, the Life Insurance Code of Practice administered by the Council of Australian Life Insurers, the Private Health Insurance Code of Conduct, the Australian Financial Complaints Authority dispute resolution timelines, the Privacy Act 1988 and Australian Privacy Principles (with health information as a specifically protected category), the Insurance Brokers Code of Practice administered by NIBA, the ASIC Australian Financial Services Licence framework, the Anti-Money Laundering and Counter-Terrorism Financing Act 2006 obligations on insurer onboarding, ISO 27001 information security management and a sector-specific physical security culture that traces back to mainframe-era data centres and has been continuously refined through electronic claims processing, post-September-11 mailroom screening, post-COVID resilience review and the contemporary climate of cyber and physical hybrid threat. The HVAC ductwork must be specified, manufactured and installed in awareness of all of it.
What makes this environment its own discipline — distinct from generic Class A office tower HVAC, banking HQ HVAC or government department HVAC — is the simultaneous presence of seven competing constraints in a single tenant footprint. Call centre cooling load (100 to 150 W/m² of internal sensible gain at agent workstation density of 1.5 to 2 m² per agent) requires redundant N+1 chiller and air handling because the contemporary claims, member-services and roadside dispatch call centre cannot tolerate a cooling outage during business hours, and many run 24/7. Acoustic tolerance is unforgiving (NC-30 maximum for phone-handled claims work) because phone-call clarity is the primary work output and ambient noise above NC-30 measurably degrades both customer satisfaction and agent fatigue across an eight-hour or twelve-hour shift. Information security requirements (APRA CPS 234) limit duct cross-section through secure zone walls and require physical access path documentation across the underwriting floor, actuarial workspace, document scanning room, claims processing floor and in-building data centre. Health information sensitivity (Privacy Act 1988 with health data as a specifically protected category) drives additional discretion at private health insurance member-services floors and at life insurance underwriting where medical evidence is reviewed. Operational risk requirements (APRA CPS 230) tie HVAC plant restoration directly to recovery time objectives in the board-approved tolerance statement. Generator and UPS battery rooms supporting the life-safety standby supply and the call-centre uninterruptible power supply require AS/NZS 60079 hazardous area zoning with spark-resistant ductwork. And the NABERS Energy commitment agreement still applies because almost every insurance HQ is in a Premium Grade or A-Grade host tower with an explicit rating obligation.
This guide is written for the people specifying that ductwork — the corporate property team at IAG, Suncorp Group, QBE Australia, Allianz Australia and Zurich; the facility engineers at Medibank, Bupa, nib, HCF and HBF; the workplace leads at TAL, MLC, AIA, Resolution Life and AMP; the Sydney-based reinsurance facility managers at Munich Re, Swiss Re, Hannover Re, SCOR Re and General Re; the network operations team at Steadfast Group, AUB Group, Marsh, Aon and WTW; the call-centre operations leadership at the major claims centres and motoring-club dispatch centres at RACV, NRMA, RAA, RAC and RACQ; and the Tier 1 mechanical consultants from AECOM, Arup, WSP, Aurecon, Norman Disney & Young, Wood & Grieve, Lucid Consulting Engineers and the boutique specialists working on insurance sector fitouts. It is not a guide to data centre HVAC — for the dedicated in-building or third-party data centre we recommend the SBKJ data centre HVAC duct manufacturing guide. It is not a guide to banking HVAC — for that we recommend the SBKJ banking, ASX, trading floor, fintech and super fund HVAC duct guide. It is not a guide to base building tower HVAC — for that we recommend the SBKJ commercial office tower HVAC duct guide. This guide covers the tenant fitout, the call centre, the underwriting and actuarial floors, the claims processing floor, the back-of-house and the regulatory layer that distinguishes insurance sector HVAC from any other office HVAC environment.
The Australian insurance and reinsurance landscape
The Australian insurance sector is one of the largest in the Asia-Pacific region by gross written premium and one of the most concentrated by market share. The general insurance market is dominated by two ASX-listed groups, the life insurance market is dominated by Japanese-parent operators, the private health insurance market is dominated by a federally-spun-off ASX listing and a UK-parent operator, and the reinsurance market is operated through Sydney-based representative offices of the global European reinsurers. The broker market sits across global Tier 1 and Australian-owned network operators.
IAG (Insurance Australia Group, ASX:IAG). Sydney headquarters at Darling Park. The largest general insurer in Australia by gross written premium, operating the NRMA Insurance brand in NSW and the ACT, the CGU brand in commercial and rural, the SGIC brand in South Australia, the SGIO brand in Western Australia and the WFI rural brand. IAG also operates the NRMA joint venture insurance arrangements with the NRMA motoring club. The corporate HQ tenant footprint sits across multiple Sydney CBD towers with substantial customer contact centre and claims operation footprint across Sydney and Brisbane.
Suncorp Group (ASX:SUN). Brisbane headquarters at Suncorp Place 80 Ann Street. The second largest general insurer in Australia by gross written premium, operating the AAMI, GIO, Apia, Vero, Shannons and Bingle brands across motor, home, commercial and lifestyle lines. Suncorp Group also operated Suncorp Bank until its 2024 divestment to ANZ. The corporate HQ tenant footprint sits across Brisbane CBD with substantial claims operation footprint in Brisbane, Sydney and regional locations.
QBE Insurance Group (ASX:QBE). Sydney headquarters at QBE Building, 50 Bridge Street Sydney. A globally diversified general insurer with operations in over 25 countries. The Australian operations cover commercial, professional, marine and personal lines with a particularly strong professional indemnity and trade credit footprint. The Sydney HQ tenant fitout integrates corporate, underwriting, actuarial and claims operations.
Allianz Australia (German parent). Sydney headquarters at Allianz Centre 2 Market Street. Part of the global Allianz Group based in Munich. Allianz Australia operates motor, home, commercial, life and travel insurance lines with both direct-to-consumer and broker-distributed product. The Australian operations sit alongside an extensive branch and partnership network distributing through banks and credit unions.
Zurich Australia (Swiss parent). Sydney headquarters with the Zurich Australian Insurance Limited general insurance entity and the Zurich Australia Limited life insurance entity. Part of the global Zurich Insurance Group based in Zurich. Zurich Australia operates corporate and commercial general insurance, life insurance, investment and superannuation product.
Hollard. Sydney headquarters. The largest private insurance group in Australia, operating a portfolio of brands including Real Insurance, Woolworths Insurance, Medibank Pet, Australian Seniors and partnership product across motor, home, life and pet lines.
Auto & General. Brisbane headquarters at Toowong. Operates the Budget Direct and 1ST For Women brands and is the largest direct-to-consumer motor insurer in Australia by policy count. The corporate operation includes substantial claims and customer service call centre footprint in Brisbane.
Youi. Sippy Downs (Sunshine Coast QLD) headquarters. South African-parent direct-to-consumer motor and home insurer. Operates a substantial purpose-built call centre and claims operation on the Sunshine Coast.
Honey Insurance. Sydney headquarters. A digital-native home insurance specialist using IoT smart-home sensor integration with policy product.
Lemonade Australia and Open Insurance. Digital-native carriers with small Sydney tenant fitouts and customer-facing operations through app and web channels.
Motoring clubs with insurance arms. RACV (Royal Automobile Club of Victoria — Melbourne HQ at 550 Bourke Street with the RACV insurance arm operating through joint venture with IAG); NRMA (National Roads and Motorists' Association — Sydney HQ; insurance is operated by IAG under the NRMA brand); RAA (Royal Automobile Association of South Australia — Adelaide HQ); RAC (Royal Automobile Club of Western Australia — Perth HQ); RACQ (Royal Automobile Club of Queensland — Brisbane HQ at Eight Mile Plains); RACT (Royal Automobile Club of Tasmania — Hobart HQ); AANT (Automobile Association of the Northern Territory — Darwin HQ). The motoring clubs collectively operate the largest roadside assistance call centre network in Australia, with sustained 24/7 dispatch operations and peak loading aligned to summer heatwave and storm event response.
Life insurance — TAL Dai-ichi Life Australia. Sydney headquarters. Subsidiary of Dai-ichi Life Holdings of Tokyo. The largest life insurer in Australia by inforce premium. Operates retail and group life insurance, total and permanent disability cover, income protection and trauma cover.
Life insurance — MLC Life Insurance. Sydney headquarters. Subsidiary of Nippon Life Insurance Company of Osaka (which acquired the MLC Life portfolio from NAB in 2016). The second largest life insurer by inforce premium. Operates retail and group life insurance.
Life insurance — AIA Australia. Sydney and Melbourne offices. Subsidiary of AIA Group of Hong Kong. Operates retail and group life insurance, total and permanent disability cover and income protection. AIA Australia acquired the CommInsure Life portfolio from Commonwealth Bank in 2021.
Life insurance — Zurich Life Australia. Sydney headquarters. Operates retail and corporate life insurance through the broader Zurich Australia entity.
Life insurance — Resolution Life Australasia. Sydney headquarters. Resolution Life acquired the AMP Wealth Protection and AMP Life portfolios in 2020. The Resolution Life Group is one of the world's largest closed-book life insurance specialists.
Life insurance — AMP (ASX:AMP). Sydney headquarters at 33 Alfred Street. AMP operates banking, advice and superannuation product after divesting the life portfolio to Resolution Life and the wealth advice arms to AZ NGA.
Life insurance — ClearView Wealth (ASX:CVW). Sydney headquarters. Mid-tier life insurance and wealth management operator.
Private health insurance — Medibank Private (ASX:MPL). Melbourne headquarters at 720 Bourke Street Docklands. Federally privatised in 2014. The largest private health insurer by membership. Operates Medibank Private, ahm and Medibank Pet Insurance brands.
Private health insurance — Bupa Australia. Sydney headquarters at Bupa Centre Sydney. Subsidiary of Bupa Group of London. One of the largest private health insurers in Australia by membership and the largest internationally-owned operator. Operates private health insurance, dental clinics, optical clinics and aged care.
Private health insurance — nib Holdings (ASX:NHF). Newcastle NSW headquarters at nib House 22 Honeysuckle Drive. Listed on ASX following demutualisation. Operates private health insurance, travel insurance (via World Nomads and nib Travel), New Zealand health insurance (via nib NZ) and the IMAN international student insurance brand.
Private health insurance — HCF (The Hospitals Contribution Fund of Australia). Sydney headquarters at HCF House 403 George Street. Member-owned not-for-profit private health insurer. One of the largest by membership in NSW.
Private health insurance — HBF Health Cover. Perth WA headquarters at HBF Building 100 Stirling Street. The largest private health insurer in Western Australia by membership.
Private health insurance — other operators. Frank Health Insurance (a GMHBA subsidiary), Australian Unity (member-owned, Melbourne), CBHS Health Fund (originally Commonwealth Bank Health Society), Defence Health (Australian Defence Force member fund), Doctors' Health Fund (medical practitioners), Police Health (state police members), GMHBA (Geelong), Latrobe Health Services (Latrobe Valley), Mildura Health Fund, NIB International, Onepath Health (Zurich subsidiary), Phoenix Health, Queensland Country Health Fund, St Lukes Health (Tasmania), Teachers Health (NSW education sector), Westfund (regional NSW) and the Honeysuckle Health joint venture between Healius and Cigna providing health insurance and population health services.
Reinsurance — Munich Re Australia. Sydney headquarters. Subsidiary of Munich Re of Munich, the world's largest reinsurer by gross written premium. Operates property, casualty, life and specialty reinsurance for Australian primary carriers.
Reinsurance — Swiss Re Australia. Sydney headquarters. Subsidiary of Swiss Re of Zurich, the world's second-largest reinsurer. Operates property, casualty, life and specialty reinsurance plus risk-management consulting through the Swiss Re Corporate Solutions arm.
Reinsurance — Hannover Re Australia. Sydney headquarters. Subsidiary of Hannover Re of Hanover, the world's third-largest reinsurer.
Reinsurance — SCOR Re Australia. Sydney headquarters. Subsidiary of SCOR of Paris.
Reinsurance — General Re Australia. Sydney headquarters. Subsidiary of General Re of Stamford CT, owned by Berkshire Hathaway.
Reinsurance — Lloyd's Australia. Sydney representative office. The Lloyd's of London syndicate market representative for Australian and New Zealand business.
Reinsurance — ARPC. The Australian Reinsurance Pool Corporation. Sydney headquarters. The federal terrorism reinsurance pool established under the Terrorism Insurance Act 2003.
Insurance broker — Marsh McLennan Australia. Sydney headquarters with offices in Melbourne, Brisbane, Perth, Adelaide and Canberra. Subsidiary of Marsh McLennan Companies, the largest insurance broker globally. The Marsh JLT merger consolidated the position. Operates corporate broking, employee benefits, risk consulting (Marsh Advisory) and reinsurance broking (Guy Carpenter).
Insurance broker — Aon Australia. Sydney headquarters at Aon Tower 201 Kent Street. Subsidiary of Aon plc of London. The second largest insurance broker globally. Operates corporate broking, employee benefits and risk consulting.
Insurance broker — Willis Towers Watson Australia. Sydney headquarters. Subsidiary of WTW of London. The third largest insurance broker globally. Operates corporate broking, employee benefits, retirement consulting and risk consulting.
Insurance broker — Steadfast Group (ASX:SDF). Sydney headquarters. The largest Australian-owned insurance broker network with over 400 broker member offices and a substantial underwriting agency portfolio. Steadfast operates a hub-and-spoke network model where independent broker members access Steadfast group services including agency facilities, technology platform and back-office support.
Insurance broker — AUB Group (ASX:AUB). Sydney headquarters. The second largest Australian-owned insurance broker network operating broker partnerships, underwriting agencies and risk services across Australia and New Zealand.
Insurance broker — Honan Insurance. Melbourne headquarters. A mid-tier broker recently acquired by Marsh and integrated into the Marsh McLennan Australia operation.
Industry bodies and regulators. Insurance Council of Australia (ICA — the peak body for general insurance — Sydney HQ at ICA House); Financial Services Council (FSC — life insurance, superannuation and investment management peak body — Sydney HQ); Council of Australian Life Insurers (CALI — formed in 2022 as the dedicated life insurance peak body); National Insurance Brokers Association (NIBA — Sydney HQ); APRA (Australian Prudential Regulation Authority — Sydney HQ); ASIC (Australian Securities and Investments Commission — Melbourne HQ with Sydney presence); ARPC (Australian Reinsurance Pool Corporation — federal terrorism reinsurance pool — Sydney HQ); AFCA (Australian Financial Complaints Authority — Melbourne HQ at 1800 Collins Street); Private Health Insurance Ombudsman (now consolidated into the Commonwealth Ombudsman); Treasury (insurance policy lead at federal level — Canberra); the Department of Health and Aged Care (private health insurance policy lead at federal level — Canberra).
Regulatory framework — APRA CPS 230, CPS 234, ICA Code, AFCA and the broader stack
The regulatory framework governing the Australian insurance sector drives HVAC ductwork specification at several specific points. The framework is layered, with prudential and conduct regulation operating in parallel, and additional sector-specific overlays for general insurance, life insurance, private health insurance, reinsurance, brokers and customer-facing call centre operations.
APRA Prudential Standard CPS 230 — Operational Risk Management. Took effect from July 2025 and applies to all APRA-regulated entities including all general insurers, life insurers, private health insurers, registered reinsurers, banks and superannuation funds. CPS 230 requires regulated entities to identify and manage operational risks, maintain critical operations through severe but plausible disruptions and manage risks arising from material service providers. The HVAC ductwork implication is that loss of cooling on a claims call centre floor, an underwriting floor or a data centre supporting policy administration is an explicit operational risk event that must be managed through redundancy, monitoring, response procedures and a board-approved tolerance statement. The standard specification response is N+1 redundant chiller and AHU on every critical-operations zone, documented HVAC routing through the operational risk plan, BMS alarm integration with the operational risk monitoring tooling and contractor service-level agreements for HVAC plant restoration within the recovery time objective.
APRA Prudential Standard CPS 234 — Information Security. Applies to the same regulated population as CPS 230. Requires the regulated entity to maintain an information security capability commensurate with the size and complexity of its activities. The HVAC ductwork implication is that any duct routing through a secure zone — underwriting floor, actuarial workspace, in-building data centre, document scanning room, secure document storage, fraud-investigation and special-investigations-unit room — must not provide an unauthorised path for physical access, listening device introduction or information asset exposure. Practical specifications include maximum duct cross-section through secure zone walls (600 × 400 mm is the typical limit before structural bar grille is required), intumescent and acoustic gasket sealing at penetration, access panels installed only on the secure side and duct routing documented in the physical security plan.
ICA General Insurance Code of Practice. Administered by the Insurance Council of Australia. The voluntary code subscribed to by ICA member general insurers setting out customer service standards including timely claims handling, hardship assistance and dispute resolution. The HVAC implication is that the claims call centre cannot be offline for extended periods during business hours without breaching the timeline obligations. The cooling redundancy is therefore N+1 at the AHU level on call-centre floors.
Life Insurance Code of Practice. Administered by the Council of Australian Life Insurers (CALI) — the newer dedicated life sector peak body that consolidated the previous FSC code arrangements. Similar timeline obligations to the ICA code apply to life insurance underwriting decisions, claims handling and customer correspondence.
Private Health Insurance Code of Conduct. Administered by Private Healthcare Australia for member funds. Drives member-services call centre service standards.
Insurance Brokers Code of Practice. Administered by NIBA. Applies to insurance brokers handling commercial and retail client business. Drives client meeting acoustic privacy requirements at broker offices.
AFCA Timeline Obligations. The Australian Financial Complaints Authority operates the external dispute resolution scheme for financial services including insurance. AFCA timelines for response, internal dispute resolution and external dispute resolution are codified and binding on the financial services provider. The HVAC implication is that systems supporting AFCA correspondence cannot be offline during the timeline window without breach.
Privacy Act 1988 and Australian Privacy Principles (APPs). Govern personal information handling by Australian Privacy Principles entities including all insurers, life insurers, private health insurers and brokers. Health information is a specifically protected category under the Privacy Act, driving additional confidentiality requirements at private health insurance member-services floors and at life insurance underwriting where medical evidence is reviewed.
ASIC Australian Financial Services Licence. All licensed insurance carriers and insurance brokers hold AFSL licences administered by ASIC. RG 109 sets out operational risk expectations including physical infrastructure resilience.
ISO 27001 Information Security Management. The international standard adopted by virtually every APRA-regulated insurer as the framework for information security management system certification. ISO 27001 Annex A includes physical security controls that overlap with APRA CPS 234.
Anti-Money Laundering and Counter-Terrorism Financing Act 2006. Administered by AUSTRAC. Applies to insurer onboarding and to life insurance product where premium amounts can be material. Drives transaction monitoring room HVAC and operational risk management.
Life Insurance Act 1995 and Private Health Insurance Act 2007. The legislative framework for life and private health insurance respectively. Administered by APRA at the prudential level.
Terrorism Insurance Act 2003. Established the Australian Reinsurance Pool Corporation. Applies to commercial property insurance terrorism coverage.
Key HVAC standards governing the insurance sector facility
The applicable HVAC ductwork standards for Australian insurance sector facilities sit across a wider stack than for a generic Class A office, because the claims call centre, underwriting floor, generator room and UPS battery room each carry additional specialist standards.
AS 1668.1 — Fire and Smoke Control in Buildings. The Australian Standard for fire and smoke control in mechanical ventilation systems. Applies to stairwell pressurisation, atrium smoke management, fire dampers at zone boundaries and smoke-rated ductwork. Mandatory for any building above 25 m effective height.
AS 1668.2 — Mechanical Ventilation in Buildings. The Australian Standard for mechanical ventilation rates and outdoor air requirements. Office floor plate minimum 10 L/s per person breathing zone outdoor air. Call centre at the same per-person rate but with much higher total supply driven by sensible cooling load and density. Branch retail at 10 L/s per person with queuing-zone increment. Cafeteria per AS 1668.2 retail rates. Toilet, shower and end-of-trip exhaust at the AS 1668.2 schedule rates.
AS 4254 — Ductwork for Air Handling Systems. The Australian Standard for ductwork construction. Specifies metal gauges, reinforcement, joining, leakage classes and pressure classifications. Routinely paired with SMACNA and DW/144 in Australian Premium Grade specifications. Class C leakage (≤6% at 500 Pa) is the typical NABERS-target tower base building specification. Class A leakage (≤3%) is specified for stairwell pressurisation, atrium smoke exhaust and secure zone ductwork.
AS 1530.4 — Fire Resistance Tests. The fire resistance rating standard for ductwork penetrating fire-rated walls and floors. Smoke management ductwork in atrium exhaust typically requires 600°C for 120 minutes. Stairwell pressurisation duct typically requires 300°C for 60 minutes. Secure document storage wall penetration matches the room FRL.
AS 1851 — Routine Service of Fire Protection Systems and Equipment. The Australian Standard for routine inspection of fire dampers, fire-rated ductwork, smoke management systems and related fire protection equipment. Annual inspection and testing is mandatory for the life of the building.
AS/NZS 60079 — Explosive Atmospheres. The Australian and New Zealand adoption of the IEC 60079 hazardous area classification series. Applies to UPS battery rooms (hydrogen gassing in lead-acid charge cycles), generator rooms (diesel fuel handling), gas appliance rooms and any zone where flammable atmospheres may form. Zone 2 is the typical classification above a UPS battery bank.
AS 1940 — Storage and Handling of Flammable and Combustible Liquids. Applies to the day tank diesel storage for the standby generator. Drives the ventilation, bunding and fire protection design for the generator room and approach area.
AS 3000 — Wiring Rules. The Australian and New Zealand electrical installation standard. Coordinates with HVAC ductwork at electrical riser shafts, switchroom ventilation and motor control centre cooling.
AS/NZS 5139 and NFPA 855 — Battery Energy Storage Systems. Apply to lithium-iron-phosphate and other lithium chemistry UPS battery installations replacing legacy lead-acid. Different zoning, ventilation and fire protection requirements compared with lead-acid. Increasingly relevant as Tier IV UPS systems migrate to lithium.
AS 2107 and AS 1276 — Acoustic. AS 2107 sets recommended ambient noise criteria across building space types. AS 1276 covers sound transmission and acoustic separation. Together they drive the NC envelope and acoustic ductwork specification — NC-25 in boardroom and HNW broker client space, NC-30 in claims call centre and dispatch call centre, NC-30 in underwriting and actuarial floor, NC-30 to NC-35 in open-plan, NC-35 in branch retail, NC-40 in back-of-house.
AS 4072.1 and AS 4072.3 — Penetration Sealing. Apply to service penetrations including HVAC duct penetrations through fire-rated walls and floors. Mandatory for any duct penetration through an FRL-rated barrier.
AS 4214 — Gaseous Fire Suppression Systems. Applies to clean agent gaseous suppression in data centre, server room and secure document storage. HVAC ductwork must coordinate with the suppression system — supply and exhaust dampers close automatically on discharge to maintain agent concentration.
AS 2118 — Sprinkler Systems. Applies to wet pipe sprinklers throughout the occupied space. HVAC ductwork must coordinate with sprinkler heads — duct must not obstruct sprinkler coverage and duct surface temperatures must not trigger sprinkler heads under normal operation.
AS 1428.1 — Design for Access and Mobility. The Australian Standard for disability discrimination compliance in built environment. Applies to lobby, branch banking floor accessibility, accessible toilet ventilation and accessible meeting room comfort.
AS 1735 — Lifts, Escalators and Moving Walks. Covers lift shaft venting that interfaces with smoke management ductwork at the head of the shaft.
ASHRAE Standard 62.1 — Ventilation for Acceptable Indoor Air Quality. The international ventilation rate reference often cited in Premium Grade Australian specifications alongside AS 1668.2.
ASHRAE Standard 90.1 — Energy Standard for Buildings. The international energy efficiency reference often cited in Premium Grade Australian specifications alongside NCC Section J and the NABERS commitment.
NABERS Energy and Indoor Environment. The Australian National Built Environment Rating System. Premium Grade host towers target NABERS Energy 5.5 to 6 stars and Indoor Environment 5 stars. Tenant fitout NABERS rating is a separate scheme that insurance HQ tenants increasingly commit to.
Workplace Exposure Standards (WES). Safe Work Australia exposure standards relevant to the insurance sector facility include CO₂ at 5000 ppm TWA (relevant on the dense claims call centre floor where 1.5 to 2 m² per agent can lift CO₂ rapidly without sufficient ventilation), R32, R410A and R744 refrigerants (chiller plant), formaldehyde 1 ppm STEL on new build (fitout materials off-gassing), ozone 0.1 ppm (laser printer, document scanning and UPS battery formation cycles) and hydrogen 25% LEL trigger (lead-acid UPS battery gassing). VOC general exposure on new fitout is also relevant during the first six months.
General insurance HQ — the office floor plate
The general insurance headquarters office floor plate is a Class 5 office under the National Construction Code with the standard AS 1668.2 minimum 10 L/s per person breathing zone outdoor air requirement and the standard AS 2107 NC-30 to NC-35 acoustic envelope. What distinguishes the insurance HQ from a generic office tenant is the operational risk and information security overlay — APRA CPS 230 and CPS 234 — that drives redundancy and secure-zone specifications across the floor plate.
The IAG headquarters at Darling Park Sydney, the Suncorp Group HQ at 80 Ann Street Brisbane, the QBE HQ at 50 Bridge Street Sydney, the Allianz Centre at 2 Market Street Sydney and the major mid-tier insurer HQs each integrate executive, underwriting, actuarial, claims, customer service, finance, IT and HR functions on contiguous floor plates. The typical Tier 1 general insurance HQ occupies between 15,000 and 40,000 m² of net lettable area across multiple floors of a Premium Grade or A-Grade tower.
Open-plan corporate floor. Workstation density 8 to 12 m² per person. Sensible heat load 50 to 80 W/m² driven by single or dual monitor configurations. Inlet supply 22 to 24°C with ±1°C tolerance. NC-30 to NC-35 acoustic envelope. AS 1668.2 minimum 10 L/s per person outdoor air. VAV terminal per zone with demand-controlled ventilation responding to occupancy. The ductwork is galvanised G90 through SBKJ SBAL-V auto duct line with internally lined sections at the public-facing supply.
Executive floor. Executive offices with private climate envelope. Dedicated VAV per office with thermostat at each desk. Tight thermal comfort 22°C ±0.5°C, 40 to 55% RH. NC-25 to NC-30 acoustic envelope. Internally lined supply duct with attenuator upstream of every diffuser. The duct routing avoids passing through public-access ceiling void.
Boardroom and audit committee room. NC-25 acoustic envelope. Internally lined supply ductwork with duct silencer attenuator upstream of every diffuser. Large-cross-section duct sized for velocity below 5 m/s in branches. Demand-controlled ventilation for variable occupancy from empty to full board sitting. The board sittings frequently include sensitive discussion of underwriting outcomes, claims experience, regulatory engagement and merger and acquisition activity — the room must be acoustically and physically secure.
Risk and audit committee room. Similar specification to the boardroom but with additional information security overlay because the committee reviews APRA correspondence, internal audit findings and operational risk events. Duct penetrations through the room wall are sealed and access-restricted.
Underwriting floor — clean private climate
The underwriting floor at a general insurance HQ is the heart of the carrier business. Underwriters review submissions, assess risk, bind cover and document rationale on every commercial, professional indemnity, directors and officers, marine, construction and large personal lines submission. The work requires sustained concentration over hours of submission review and the floor specification reflects this.
Workstation density. 8 to 12 m² per underwriter on the open-plan floor with additional private review rooms for sensitive submissions, broker meetings and confidential file review. Senior underwriters frequently occupy dedicated offices with private climate envelope.
Acoustic NC-30 to NC-35. The underwriting floor cannot tolerate high ambient noise because the work involves reading complex submissions, technical specifications and legal documents while taking phone calls with brokers and reinsurance contacts. Internal lining on supply ductwork, attenuator upstream of every diffuser, large-cross-section duct sized for velocity below 6 m/s.
Sensible heat load 50 to 80 W/m². Dual to triple monitor configurations are standard for underwriters reviewing submission documents, policy administration system records and broker correspondence simultaneously. Inlet supply 22 to 24°C with ±1°C tolerance.
Dedicated VAV. Each pod or zone runs on dedicated VAV terminal with thermostat control. Demand-controlled ventilation responds to occupancy because underwriters are frequently away from desk on broker calls, lunch and meeting.
Private climate within the secure perimeter. The underwriting floor sits inside the secure perimeter of the insurance HQ. APRA CPS 234 duct cross-section restrictions apply at the perimeter wall. The HVAC routing must not provide an unauthorised path from the public floor to the underwriting workspace.
The ductwork is galvanised G90 through SBKJ SBAL-V with internally lined sections; 304 stainless via SBKJ SB-ZF1500 for the acoustic sound attenuator construction where NC-30 is the target.
Actuarial floor — pricing, reserving and reinsurance modelling
The actuarial floor at a general insurance HQ, life insurance HQ or reinsurance office handles pricing, reserving, reinsurance treaty modelling, catastrophe modelling and capital modelling. The work is run on high-spec workstations with four to six monitor configurations and significant computing capacity.
Sensible heat load 70 to 100 W/m². The multi-monitor configuration drives substantially higher sensible heat load than a generic open-plan office. The HVAC supply rate must be set to extract this heat without thermal stratification or hot spots.
Catastrophe modelling workstations. Cat-modelling tools (AIR, RMS, Karen Clark, Impact Forecasting) run on high-end workstations with GPU acceleration for the simulation runs. The peak load during a major cat-modelling exercise (such as a portfolio re-rating for treaty renewal) can drive 100 to 150 W/m² locally in the cat-modelling team area. The HVAC zoning must allow elevated cooling delivery to this zone.
Acoustic NC-30. The actuarial floor requires sustained concentration on quantitative work. Phone work is significant for reinsurance broker contact and treaty negotiation. Internally lined supply ductwork, attenuator upstream of every diffuser, large-cross-section duct sized for velocity below 6 m/s.
Dedicated VAV per pod. Each actuarial pod (life pricing, GI pricing, reserving, cat modelling, reinsurance) runs on dedicated VAV terminal with thermostat control.
Inside the secure perimeter. The actuarial floor sits inside the secure perimeter because the pricing models, treaty pricing intelligence and capital model output are highly confidential. APRA CPS 234 duct cross-section restrictions apply.
The ductwork is galvanised G90 through SBKJ SBAL-V with internally lined sections; 304 stainless via SBKJ SB-ZF1500 for the acoustic sound attenuator construction where NC-30 is the target.
Claims processing floor — secure file handling
The claims processing floor handles open claim files, claims correspondence, claims correspondence review and the back-office support to the front-line claims call centre. Workstation density is 8 to 12 m² per person, sensible heat 50 to 80 W/m², acoustic NC-30 to NC-35.
The claims processing floor sits inside the secure perimeter because the work involves direct handling of personally identifiable customer information including medical evidence (in life and health claims), financial information, police reports, motor vehicle assessments and forensic accountant reports. APRA CPS 234 duct cross-section restrictions apply.
Claims investigation and special-investigations-unit (SIU) work — fraud investigation, large commercial claim investigation, complex injury claims — is conducted in a sub-zone with additional acoustic privacy and information security overlay. The duct routing is documented in the physical security plan and access panels are installed only on the secure side.
The ductwork is galvanised G90 through SBKJ SBAL-V with internally lined sections and SBKJ SB-ZF1500 stainless sound attenuator where NC-30 is held.
Claims call centre — the most demanding sustained-occupancy zone
The claims call centre is the most demanding sustained-occupancy office HVAC environment in the Australian insurance sector. Workstation density is the highest, hours of operation are continuous, acoustic tolerance is the lowest and operational risk consequences of HVAC failure are the most material. IAG, Suncorp, QBE, Allianz, Auto & General, Youi, Medibank, Bupa, nib, HCF, TAL, MLC, Resolution Life, NRMA Insurance, RACV, NRMA roadside, RAA, RAC and RACQ each operate large claims and customer-service call centres across Australia.
Workstation density 1.5 to 2 m² per agent. A modern claims call centre operates at 1.5 to 2 square metres per agent — substantially denser than a generic open-plan office (typically 8 to 12 m²). A single 2,000 m² call centre floor can therefore hold 1,000 to 1,300 agent workstations during peak shift. Major call-centre clusters at Auto & General (Toowong Brisbane), Youi (Sippy Downs Sunshine Coast), Medibank (Melbourne CBD and regional), Bupa (Sydney and Melbourne), IAG (Sydney and Brisbane), Suncorp (Brisbane), RACV (Melbourne), NRMA (Sydney), RACQ (Brisbane) and the major life insurers operate floors holding 200 to 2,000 agents per shift, often across multiple floors of the same building or campus.
Internal heat gain 100 to 150 W/m². The combined sensible cooling load on a dense call centre floor is 100 to 150 W/m² driven by agent workstation computing (typically a desktop or thin-client with dual or triple monitor configuration), headset systems, dialler integration, case management screen displays and personal task lighting. This is two to three times the cooling load of a generic open-plan office. The HVAC system must extract this heat continuously during shift hours and maintain inlet supply at the design temperature without thermal stratification.
Inlet supply temperature 22 to 24°C. Claims call centre floors are typically held at 22 to 24°C dry bulb in the occupied zone with ±0.5°C tolerance. The supply temperature is typically 14 to 16°C at the diffuser depending on the air distribution strategy. The tight tolerance is driven by agent comfort sensitivity — agents work seated, often with reduced movement during call handling, and temperature variation produces complaints, productivity loss and absenteeism.
Acoustic NC-30 maximum. The call centre acoustic envelope is the most demanding sustained-occupancy environment in the Australian commercial portfolio. Phone-call clarity degrades sharply above NC-30 because the human voice frequency band overlaps with HVAC noise above this level. Agent fatigue accumulates measurably across an eight-hour or twelve-hour shift in higher-noise environments and ambient noise above NC-30 increases call escalation and reduces customer satisfaction. Achievement requires internally lined supply ductwork (25 to 50 mm acoustic absorption inside galvanised shell), duct silencer attenuator upstream of every diffuser, large-cross-section duct sized for velocity below 6 m/s in branches, and seamless welded plenum sections delivered through the SBKJ SB-ZF1500 stitchwelder where air leakage and sound leakage must be minimised simultaneously. The 304 stainless sound attenuator construction is the engineering centrepiece of the NC-30 call centre — without it, the floor cannot hold the target.
24/7 redundant N+1 cooling. Claims call centres at IAG, Suncorp, Medibank, Bupa, NRMA, RACV and the major motoring-club roadside assistance call centres operate continuously across multiple time zones and regulatory reporting cycles. Cooling redundancy is N+1 minimum at the AHU and chiller level — a single AHU or chiller failure during business hours must not interrupt supply to the call centre. The standby unit carries the load during planned maintenance.
ICA Code and AFCA timeline overlay. The ICA General Insurance Code of Practice and the AFCA timeline obligations create a regulatory floor under HVAC redundancy. A call centre offline during business hours risks breach of timeline obligations for claims acknowledgment, claims decision and dispute resolution. The cooling redundancy specification is calibrated to keep the call centre operational through plant maintenance, plant failure and severe-but-plausible disruption per APRA CPS 230.
CO₂ at dense workstation density. CO₂ accumulation at 1.5 to 2 m² per agent can rise rapidly without sufficient outdoor air rate. The AS 1668.2 minimum 10 L/s per person is enforceable but at call centre density the practical outdoor air requirement is closer to 12 to 15 L/s per person for sustained sub-1000 ppm CO₂. The WES TWA limit is 5000 ppm, which is far above any cognitive comfort target — the call centre cognitive performance target is typically below 1000 ppm and ideally below 800 ppm, well inside the WES envelope.
Demand-controlled ventilation. CO₂ sensor at workstation height drives outdoor air damper modulation. The DCV strategy delivers energy efficiency at off-peak shift hours while maintaining occupied-zone CO₂ envelope at peak shift.
Shift transition management. Major call centres operate two or three shifts with brief handover periods. The HVAC system must handle the transient outdoor air demand during shift changeover when the floor temporarily holds both outgoing and incoming agents.
The ductwork is galvanised G90 through SBKJ SBAL-V with extensive internally lined acoustic sections; 304 stainless via SBKJ SB-ZF1500 stitchwelder for the welded sound attenuator construction in the densest agent pods where NC-30 must be held; SBKJ SBPC1500 plasma cutter for the heavier-gauge cut-outs at the UPS battery room exhaust.
Customer service and member services call centre
The customer service and member services call centre — distinct from the claims call centre but adjacent in HVAC profile — handles new policy quoting, policy administration, member enquiry (private health), beneficiary update (life) and general customer service. The acoustic and density envelope is similar to the claims call centre.
Private health insurance member-services call centres at Medibank, Bupa, nib, HCF and HBF handle a particularly high call volume because health insurance is a high-touch product — members call about hospital admission, treatment coverage, extras claims, premium adjustments, hardship and product changes. The Medibank member-services centre alone handles tens of millions of member contacts per year.
Life insurance customer service centres handle a smaller call volume relative to general insurance but with longer call duration because the topics are technical — beneficiary changes, policy lapse, premium review, claim handling for total and permanent disability, income protection and trauma claims.
Roadside assistance call centres at RACV, NRMA, RAA, RAC, RACQ and RACT handle dispatch of patrols, accident response coordination and member towing services. The call volume is event-driven with massive spikes during summer heatwaves (battery failures), winter storms (tree-down incidents) and major weather events. The HVAC redundancy is N+1 minimum because the call centre cannot afford downtime exactly when member demand peaks.
The ductwork construction strategy is identical to the claims call centre — galvanised through SBKJ SBAL-V with internally lined sections, 304 stainless via SBKJ SB-ZF1500 for the welded NC-30 sound attenuator.
Marketing, communications and brand
The marketing, communications, brand and digital marketing team at the insurance HQ operates as a creative and analytical function with mixed workstation profile. The HVAC specification is broadly similar to the corporate open-plan floor — 10 L/s per person ventilation per AS 1668.2, NC-30 to NC-35 acoustic, 8 to 12 m² per person workstation density.
The creative-team workstations frequently include high-end design workstations with multi-monitor configurations driving 70 to 90 W/m² sensible heat load in the densest creative pods. The HVAC zoning accommodates this elevated load.
Video production and content production sub-zones at major insurance HQs (IAG, Suncorp, Medibank) operate small studios with acoustic separation, controlled lighting, video equipment cooling and recording-grade NC-25 to NC-30 acoustic envelope.
The ductwork is galvanised through SBKJ SBAL-V with internally lined sections at the studio-grade acoustic zones.
Boardroom, executive and committee — discreet routing and NC-25
The insurance HQ boardroom hosts confidential discussion of underwriting performance, claims experience, capital management, APRA correspondence, merger and acquisition activity and reinsurance treaty negotiation. The acoustic and information security envelope is the most stringent in the building.
Acoustic NC-25. The boardroom and audit committee room specify NC-25 maximum ambient noise because confidential conversation is the work product. Achievement requires internally lined supply ductwork, duct silencer attenuator upstream of every diffuser, large-cross-section duct sized for velocity below 5 m/s in branches and acoustic separation from adjacent rooms.
AV control room. The AV control room serving the boardroom carries Bloomberg, Refinitiv, Mercer Sentinel performance data, AICD Director sentiment dashboards and the proprietary insurance reporting suite. The room requires clean redundant supply HVAC, MERV 13+ filtration to keep dust off display surfaces and acoustic separation from the boardroom proper.
Discreet duct routing. The duct route from the AHU to the boardroom avoids passing through public-access ceiling void or common-area routes where service personnel could potentially access the duct. The duct routes through the secure office floor ceiling void with documented physical security overlay per APRA CPS 234.
Demand-controlled ventilation. The boardroom operates at variable occupancy — empty between meetings, full during board sitting. DCV strategy responds to occupancy through CO₂ sensor or occupancy sensor input to the BMS.
Hospitality-grade thermal comfort. Tight envelope 22°C ±0.5°C, 40 to 55% RH with dedicated VAV terminal per room rather than zone-shared VAV.
The ductwork is galvanised through SBKJ SBAL-V with internally lined sections; 304 stainless via SBKJ SB-ZF1500 for the welded sound attenuator construction; SBFB-1500 for the round duct in the lobby and approach.
Reinsurance office — catastrophe response sub-zone
The reinsurance office in Australia is typically a Sydney CBD representative office of one of the global reinsurers — Munich Re, Swiss Re, Hannover Re, SCOR Re, General Re, Lloyd's Australia and the federal ARPC. The fitout is 1,500 to 4,000 m² across treaty underwriting, catastrophe modelling, claims and finance.
The reinsurance HVAC profile is high-spec actuarial workspace with several reinsurance-specific overlays.
Catastrophe modelling team. The cat-modelling team runs the AIR, RMS, KCC and Impact Forecasting models for the Australian and New Zealand exposure portfolio. Workstation configuration is high-spec with multi-monitor display and GPU acceleration for cat-model runs. Sensible heat load 70 to 100 W/m² with peak loading during portfolio re-rating exercises.
Catastrophe response sub-zone. The reinsurance office maintains a dedicated catastrophe response sub-zone activated during major event. The sub-zone includes additional seating for incoming claims notification staff, satellite phone connectivity, video conferencing to the head office in Munich, Zurich, Hanover or London, and 24/7 staffing during the response window. The HVAC zoning supports activation through the dedicated VAV terminal and the cooling redundancy is N+1 because catastrophe-event response timing aligns exactly with summer heatwave HVAC stress.
Treaty underwriting team. The treaty underwriting team handles renewal of reinsurance treaties with Australian primary carriers across property, casualty, life and specialty lines. The work is highly confidential and the team sits inside the secure perimeter. APRA CPS 234 duct cross-section restrictions apply.
Acoustic NC-30 to NC-35. Phone work and video conferencing to the head office requires NC-30 in the treaty underwriting and catastrophe response zones.
Inside the secure perimeter. The entire reinsurance office is inside the secure perimeter from a contractor access perspective. Visitors are escorted, contractor access is logged and the HVAC service contractor holds documented physical security clearance.
The ductwork is galvanised through SBKJ SBAL-V with internally lined sections and 304 stainless via SBKJ SB-ZF1500 for the welded sound attenuator construction at NC-30 zones. SBFB-1500 spiral for the lobby and corridor.
Insurance broker office — client meeting density
The insurance broker office differs from the carrier insurance HQ in floor-plate composition. The broker office runs a high meeting-room-to-desk ratio because client engagement is the core deliverable, and the broker pods are smaller than the carrier underwriting floor because the broker holds fewer files in active work.
Marsh McLennan Australia at multiple Sydney CBD locations, Aon Australia at Aon Tower 201 Kent Street, Willis Towers Watson at the Sydney CBD office, Steadfast Group at the Sydney HQ supporting the 400+ broker network, AUB Group at the Sydney HQ and the Honan Insurance Melbourne office each occupy 2,000 to 8,000 m² broker office tenant fitouts.
Broker pod workspace. Workstation density 8 to 12 m² per broker on the open-plan floor. Sensible heat load 50 to 80 W/m². Acoustic NC-30 to NC-35 because the broker combines phone work, screen work and in-person client engagement.
Meeting room density. The broker office runs 1 meeting room per 4 to 6 brokers compared with 1 per 15 to 20 staff in a carrier insurance HQ. The meeting room HVAC specification is NC-30 with internally lined supply, demand-controlled ventilation responding to occupancy and dedicated VAV per room.
HNW client meeting room. Top-tier broker offices include HNW client meeting rooms at NC-25 acoustic with hospitality-grade thermal comfort. Acoustic privacy is mandatory under the NIBA Insurance Brokers Code of Practice obligation on client confidentiality.
Underwriting agency floor (Steadfast and AUB). The Steadfast Group and AUB Group operate substantial underwriting agency businesses providing binding authority capacity to network broker members. The underwriting agency floor mirrors the carrier underwriting floor specification — NC-30, dedicated VAV per pod, inside the secure perimeter.
Claims team. The broker claims team supports clients through the claims process and acts as advocate against the carrier. The floor specification is similar to the carrier claims processing floor — NC-30 to NC-35, 10 L/s per person, dedicated VAV.
The ductwork is galvanised through SBKJ SBAL-V with extensive internally lined sections for the dense meeting-room layout; 304 stainless via SBKJ SB-ZF1500 for the welded sound attenuator construction in the NC-25 HNW meeting rooms.
Branch and retail — IAG, Suncorp, Allianz and motoring-club branches
The bank and insurance branch retail floor is a Class 6 retail tenancy under the National Construction Code and the HVAC envelope differs from the upstairs Class 5 office. Branch retail networks operated by IAG (NRMA Insurance branches in NSW and the ACT), Suncorp (AAMI, GIO, Apia, Vero branches), Allianz (smaller branch footprint), RACV (Melbourne branches including the major Bourke Street flagship), NRMA (Sydney and regional NSW branches), RAA (Adelaide branches), RAC (Perth branches) and RACQ (Brisbane and regional QLD branches) collectively operate hundreds of customer-facing retail locations.
AS 1668.2 sets minimum 10 L/s per person breathing zone outdoor air with increased queuing-zone ventilation at peak retail hours. The HVAC envelope must accommodate quote-and-buy walk-in customers, members renewing roadside membership and customers lodging claim notifications.
Public access drives security overlay. Supply and return openings into the public retail floor must not provide an unsecured path to the staff-only office area or the document storage. Duct penetrations through secure zone walls are restricted in cross-section.
Acoustic NC-35 in the public retail hall. The acoustic envelope must allow private conversation between the customer and the consultant without creating a quiet space where conversation at the adjacent desk is audible.
The duct material is galvanised through SBKJ SBAL-V with internally lined sections at the public-facing supply where NC-35 is held.
IT, server room and in-building data centre
The insurance HQ in-building data centre and server rooms host the policy administration system, the claims management system, the customer relationship management system, the actuarial modelling environment, the disaster recovery replication infrastructure and the security operations centre.
The cooling specification for the data centre is the standard Tier III to Tier IV envelope with N+1 chiller and AHU redundancy, hot-aisle/cold-aisle containment and 22 to 27°C cold-aisle supply per ASHRAE TC 9.9 recommendations. Refer to the SBKJ data centre HVAC duct manufacturing guide for the dedicated data centre HVAC specification.
The disaster recovery site at a secondary location requires the same envelope. Major insurance carriers operate DR sites at NEXTDC, AirTrunk, CDC, Equinix and other Australian colocation providers, with replication of the primary site's HVAC, network and security envelope.
The HVAC ductwork in the in-building data centre is galvanised through SBKJ SBAL-V for the standard supply, return and exhaust; 304 stainless via SBKJ SB-ZF1500 for any plenum sections requiring welded construction.
Document scanning room and records management
Document scanning operations at insurance carriers handle the conversion of paper claims files, paper policy correspondence, historical archive material and broker submissions into digital format. The scanning room HVAC includes dedicated extract for laser printer ozone (0.1 ppm WES) and scanner ozone, MERV 13+ filtered supply and acoustic separation from adjacent work zones.
Records management warehouses operated either in-building or at third-party document storage providers (Iron Mountain, GRACE Records Management, TIMG, Recall) hold paper claims files, legal correspondence and historical underwriting records. The HVAC specification is 18 to 22°C, 40 to 50% RH with MERV 13+ filtration. AS 4214 gaseous suppression coordination applies where paper records are critical.
The ductwork is galvanised through SBKJ SBAL-V with stainless via SB-ZF1500 in the scanning room extract where corrosion-free construction supports the cleanroom-adjacent envelope.
Secure document storage — life and health medical evidence
Secure document storage for life insurance medical evidence, private health insurance claims documentation and general insurance forensic accountant reports requires controlled climate at 18 to 22°C, 40 to 50% RH with clean filtered supply MERV 13+ and acoustic separation.
The Privacy Act 1988 sensitivity is elevated for health information (a specifically protected category) and life insurance medical evidence frequently includes the entire medical history of the insured. The physical security overlay is correspondingly stringent.
APRA CPS 234 duct cross-section restrictions apply at the secure storage wall. AS 4214 gaseous suppression coordination applies where records are critical.
The ductwork is galvanised through SBKJ SBAL-V with 304 stainless via SB-ZF1500 for the welded plenum and acoustic sections.
Print, production and mailroom
The print, production and mailroom at the insurance HQ handles outbound policy documents, renewal notices, claims correspondence, marketing material and inbound mail. The HVAC includes dedicated extract for laser printer ozone (0.1 ppm WES) and a mailroom HEPA-filtered exhaust option that has been standard in major insurance HQs since the post-September-11 anthrax-screening era.
The mailroom is frequently the first physical point of contact for inbound complaints, regulatory correspondence and legal correspondence — the screening protocol typically includes X-ray scanning for suspicious envelopes and the HVAC exhaust supports the screening process.
The ductwork is galvanised through SBKJ SBAL-V with stainless via SB-ZF1500 in the mailroom extract.
Kitchen and cafeteria — NFPA 96 commercial kitchen
The insurance HQ kitchen and cafeteria supports the staff workforce with breakfast, lunch and dinner service for shift workers and dining for corporate functions. Large HQs (IAG, Suncorp, Medibank) operate full commercial kitchen with seated cafeteria for 200 to 500 covers per service.
The commercial kitchen exhaust meets NFPA 96 (Commercial Kitchen Ventilation), with 304 stainless grease duct via the SBKJ SB-ZF1500 stitchwelder. The continuous welded construction is mandatory for grease duct because mechanical joints fail under thermal cycling and any leak at a joint creates a fire hazard. The grease filter is at the hood with a dedicated maintenance access circuit.
Make-up air supply is delivered through SBKJ SBAL-V galvanised duct, sized for the kitchen exhaust flow plus a small positive pressure margin.
The dining area HVAC follows AS 1668.2 retail rate with seasonal demand-controlled ventilation responding to occupancy.
Generator room HVAC — AS/NZS 60079 and AS 1940
The insurance HQ standby generator room serves life-safety standby and resilience continuity for the call centre, underwriting floor, claims processing floor and in-building data centre. A typical Tier 1 insurance HQ runs a 1 to 4 MW diesel generator set on the ground or basement level, with the radiator on roof or external wall and the day tank diesel storage in a dedicated bunded room. The HVAC specification is driven by AS/NZS 60079 hazardous area zoning, AS 1940 flammable liquid storage and the generator manufacturer's air supply and exhaust requirements.
Combustion air supply. A 1 MW class 24-hour standby diesel set typically consumes 8 to 12 m³/s combustion air at full load, with corresponding cooling air at 25 to 35 m³/s flowing across the engine and radiator. The combustion air supply ductwork is sized for the full demand with weather-protected louvre intake at the external wall.
Radiator heat exhaust. The radiator exhausts heat to atmosphere via a ducted path to the roof or external wall. The duct is typically galvanised through SBKJ SBAL-V at heavy gauge (1.2 to 1.5 mm) sized for the radiator pressure drop. Acoustic attenuation is typically required because the radiator fan noise is significant at the discharge point.
Generator room ventilation. When the generator is not running, the generator room requires nuisance ventilation to clear residual diesel vapour from the day tank vent and from leakage at fuel line joints. AS/NZS 60079 may classify the immediate envelope around the fuel system as Zone 2. SBKJ spark-resistant manufactured ductwork is specified in the Zone 2 envelope.
Day tank diesel storage. AS 1940 governs the day tank construction, bunding and ventilation. The day tank room is typically a small adjacent space with dedicated exhaust and AS/NZS 60079 Zone 2 classification around the tank vent.
Acoustic. The generator room acoustic envelope at the external wall is typically held below 65 dBA at 1 m from the louvre to comply with NSW EPA, EPA Victoria or relevant state environment regulator noise limits for the precinct.
Monthly full-load test. The generator is run under full load on monthly schedule. The HVAC ductwork must support the run without overheating the room or accumulating diesel vapour outside the Zone 2 envelope.
UPS battery room HVAC — hydrogen, lithium and AS/NZS 60079
The UPS battery room supporting the insurance HQ call centre, claims processing floor, in-building data centre and security operations centre is one of the most specialised HVAC zones in the facility. The specification depends critically on battery chemistry — flooded lead-acid, valve-regulated lead-acid (VRLA) or lithium-iron-phosphate.
Lead-acid hydrogen gassing. Flooded and VRLA lead-acid batteries produce hydrogen gas during charge cycles, with peak gassing during equalisation charge. The hydrogen accumulates in the room atmosphere unless ventilated. AS/NZS 60079 typically classifies the envelope above the battery bank as Zone 2. The hydrogen lower explosive limit is 4.0% v/v and the design target is to keep concentration below 25% of LEL (equivalent to roughly 1.0% v/v hydrogen) — well below the explosive envelope.
Mechanical ventilation 5 to 12 ACH. The room is mechanically ventilated at 5 to 12 air changes per hour with spark-resistant exhaust fans (motor outside the airstream or intrinsically safe motor inside) and spark-resistant ductwork through the Zone 2 envelope. SBKJ spark-resistant manufactured ductwork is specified for the immediate envelope, transitioning to standard galvanised SBKJ SBAL-V in the non-Zone-2 portion of the run.
Lithium UPS (AS/NZS 5139 and NFPA 855). Lithium-iron-phosphate UPS systems are increasingly specified in new insurance HQ fitouts and Tier IV data centre upgrades. The AS/NZS 60079 hydrogen gassing zoning does not apply, but the AS/NZS 5139 and NFPA 855 thermal runaway zoning, gas detection (CO, HF, hydrogen from electrolyte decomposition) and ventilation requirements do. The ductwork specification is generally simpler at the immediate envelope but the thermal runaway response ventilation strategy is more demanding.
Hydrogen detection at 25% LEL. The hydrogen detection system triggers exhaust fan high-speed mode at 25% LEL and triggers alarm at 50% LEL. The trigger ties to the BMS alarm path and to the security operations centre monitoring.
Annual hydrogen detection test. The hydrogen detection system is tested annually for the life of the facility.
The ductwork is SBKJ spark-resistant manufactured ductwork in the Zone 2 envelope transitioning to SBKJ SBAL-V galvanised in the non-Zone-2 portion. SBKJ SBPC1500 plasma cutter is used in the contractor workshop for the heavier-gauge cut-outs on the exhaust riser.
Telecommunications room and fibre
The telecommunications room and fibre splice point at the insurance HQ require clean supply at 20 to 25°C with MERV 13+ filtration, acoustic separation and positive pressure relative to the corridor to keep dust out of the fibre splice cassettes.
The telecom room ductwork is galvanised through SBKJ SBAL-V with internally lined sections for the acoustic envelope.
End-of-trip facility and amenity
The end-of-trip (EOT) facility at the insurance HQ supports cyclists and runners commuting to the office, with shower, locker, bike storage and changing room amenity. The HVAC ductwork includes dedicated extract for the shower humidity envelope with corrosion-resistant 304 stainless construction via the SBKJ SB-ZF1500 stitchwelder.
The bike storage area requires nuisance ventilation for tyre off-gassing and chain lubricant odour, with a small dedicated extract sized at 1 to 3 air changes per hour.
Amenity exhaust at the AS 1668.2 toilet exhaust schedule (typically 25 L/s per WC plus 25 L/s per urinal).
NCC compliance — Class 5 office, Class 6 retail, Class 7a car park, Section J energy
The NCC compliance package at the insurance HQ tenant fitout covers the office (Class 5), the retail-facing component (Class 6), the basement car park (Class 7a) and the Section J energy efficiency overlay.
Class 5 office. The corporate office floors are Class 5. AS 1668.2 ventilation rates, AS 4254 ductwork class, AS 1530.4 fire ratings for vertical and horizontal duct penetrations apply.
Class 6 retail. The branch retail floor is Class 6. AS 1668.2 retail ventilation rates apply.
Class 7a car park. The basement car park is Class 7a. AS 1668.2 car park ventilation rate with CO sensor demand-controlled ventilation applies.
NCC Section J energy efficiency. The Section J energy efficiency overlay applies to the building envelope, the HVAC system efficiency, the lighting density and the building services. Premium Grade host towers achieve Section J compliance through high-efficiency chiller plant, heat recovery on outdoor air, demand-controlled ventilation and the NABERS Energy commitment regime.
NABERS Energy and Indoor Environment
NABERS Energy and NABERS Indoor Environment are the Australian National Built Environment Rating System for office buildings. Premium Grade host towers target NABERS Energy 5.5 to 6 stars and Indoor Environment 5 stars. The insurance HQ tenant frequently commits to a NABERS rating commitment agreement for the tenant fitout, with measurement and verification across the first 12 months of operation.
The HVAC ductwork specification supports the NABERS rating through low duct leakage (AS 4254 Class C minimum), efficient air distribution (low pressure drop, large cross-section duct), demand-controlled ventilation and heat recovery on outdoor air. The SBKJ SBAL-V auto duct line produces TDF flange duct with consistent dimensions and joint quality that supports the NABERS air leakage target.
Commissioning, testing and ongoing maintenance
The commissioning, testing and ongoing maintenance regime for the insurance HQ HVAC is documented across AS 1668.4 smoke management commissioning, AS 1851 routine fire protection inspection, AS 4254 duct leakage testing by independent inspector, APRA CPS 230 operational risk plan annual refresh, APRA CPS 234 physical security plan annual review, NABERS rating audit and the manufacturer's HVAC plant maintenance schedule.
Annual deliverables include — AS 4254 duct leakage test on a sample of the duct system, AS 1668.4 smoke management test, AS 1851 fire damper test, UPS battery room hydrogen detection test, generator monthly full-load test, BMS alarm log review, NABERS rating audit pack assembly, APRA CPS 230 operational risk plan refresh and APRA CPS 234 physical security plan review.
The HVAC service contractor holds documented physical security clearance to access the secure perimeter and is bound by confidentiality obligation that aligns with the insurer's broader CPS 234 information security framework.
SBKJ machinery for the insurance HQ HVAC ductwork programme
The Australian mechanical contractor supplying ductwork to an insurance HQ tenant fitout, a claims call centre fitout or a reinsurance office fitout typically operates a production line cluster from the SBKJ machinery range. The combined production capacity for a 20,000 to 40,000 m² insurance HQ fitout (including claims call centre, underwriting floor, actuarial floor, claims processing floor and back-of-house) is approximately 6 to 10 weeks on two shifts with the cluster running at design throughput.
SBKJ SBAL-V auto duct production line. The flagship line for galvanised G90 (Z275) supply, return and exhaust ductwork. Produces TDF flange rectangular duct in the standard insurance HQ size range from 200 × 150 mm to 1500 × 1200 mm at high throughput with consistent dimensional accuracy and AS 4254 Class C leakage performance. The SBAL-V is the most-specified production line for the general insurance HQ open-plan floor, underwriting floor, actuarial floor, claims call centre and customer service centre supply and return ductwork.
SBKJ SBSF-1525 super auto duct line. The higher-throughput configuration for base building plus tenant fitout running on the same programme. The SBSF-1525 is specified where the contractor is producing both the host tower base building duct and the multi-floor tenant fitout duct simultaneously, accelerating the production schedule for the combined programme.
SBKJ SB-ZF1500 stitchwelder. The seamless welded plenum and sound attenuator construction line for 304 stainless steel. The SB-ZF1500 is the engineering centrepiece of the NC-30 call centre because the welded plenum sections deliver the combined air leakage and acoustic performance that mechanical joint construction cannot. The SB-ZF1500 also produces the 304 stainless kitchen grease duct via NFPA 96 specification, the 304 stainless secure document storage plenum and the 304 stainless reinsurance office sound attenuator. Continuous welded construction with minimal heat-affected zone and full penetration weld at the joint.
SBKJ SBFB-1500 spiral tubeformer. The round duct production line for atrium, lobby, corridor and external air intake routing. The SBFB-1500 produces spiral lockseam round duct in the standard insurance HQ size range from 100 mm to 1500 mm diameter at high throughput.
SBKJ SBPC1500 plasma cutter. The heavier-gauge cut-out production for the generator room radiator exhaust ductwork, the UPS battery room exhaust ductwork and the high-pressure smoke management duct cut-outs. The SBPC1500 handles up to 6 mm carbon steel and 4 mm stainless cleanly.
SBKJ SBLR-600 laser welder. The premium finish welder for visible-grade architectural duct sections in the corporate lobby and the executive floor where weld finish is part of the visual specification.
Spark-resistant manufactured ductwork. SBKJ supplies spark-resistant manufactured ductwork in the AS/NZS 60079 Zone 2 envelope of the UPS battery room and the generator room. The construction avoids ferrous metal-on-metal impact during installation and provides the certified spark-resistant performance required for the hazardous area envelope.
Visit the SBKJ machines overview and the SBAL-V product page for the full equipment range and detailed specifications.
Specification summary — insurance HQ, call centre and reinsurance fitout
For the engineer specifying ductwork on the next Australian insurance sector fitout, the summary specification across the major zones is as follows.
General insurance HQ open-plan office — 10 L/s per person AS 1668.2. NC-30 to NC-35 acoustic. 50 to 80 W/m² sensible heat load. Class 5 office. Galvanised through SBKJ SBAL-V with internally lined sections.
Underwriting floor — 10 L/s per person. NC-30 acoustic. 50 to 80 W/m² sensible heat. Inside the secure perimeter. APRA CPS 234 duct cross-section restrictions. Dedicated VAV per pod. Galvanised through SBKJ SBAL-V with 304 stainless SB-ZF1500 sound attenuator.
Actuarial floor — 10 L/s per person. NC-30 acoustic. 70 to 100 W/m² sensible heat. Inside the secure perimeter. Catastrophe modelling sub-zone with elevated cooling. Galvanised through SBKJ SBAL-V with 304 stainless SB-ZF1500 sound attenuator.
Claims processing floor — 10 L/s per person. NC-30 to NC-35 acoustic. 50 to 80 W/m² sensible heat. Inside the secure perimeter. Galvanised through SBKJ SBAL-V with stainless sound attenuator where required.
Claims call centre — 10 L/s per person AS 1668.2 minimum. NC-30 acoustic maximum. 100 to 150 W/m² sensible heat at 1.5 to 2 m² per agent. 24/7 operation. N+1 redundant chiller and AHU. Demand-controlled ventilation. Galvanised through SBKJ SBAL-V with extensive internally lined acoustic sections; 304 stainless via SBKJ SB-ZF1500 for the welded sound attenuator construction.
Customer service and member services call centre — same as claims call centre.
Roadside dispatch call centre (RACV, NRMA, RAA, RAC, RACQ, RACT, AANT) — same as claims call centre with N+1 redundancy emphasised because of summer heatwave peak loading.
Executive floor — 10 L/s per person. NC-25 to NC-30 acoustic. Dedicated VAV per office. Tight thermal comfort 22°C ±0.5°C 40-55% RH. Discreet routing per APRA CPS 234. Galvanised through SBKJ SBAL-V with 304 stainless SB-ZF1500 sound attenuator.
Boardroom, audit committee, risk committee — NC-25 acoustic. Internally lined supply. Demand-controlled ventilation for variable occupancy. Premium thermal comfort. Dedicated VAV per room. Galvanised through SBKJ SBAL-V with 304 stainless SB-ZF1500 sound attenuator.
HNW broker client meeting room — NC-25 acoustic. Internally lined supply. Hospitality-grade thermal comfort. Galvanised through SBKJ SBAL-V with 304 stainless SB-ZF1500 sound attenuator.
Reinsurance office — NC-30 to NC-35 acoustic. Catastrophe response sub-zone with N+1 cooling. Inside the secure perimeter. Galvanised through SBKJ SBAL-V with 304 stainless SB-ZF1500 sound attenuator.
Insurance broker office — NC-30 to NC-35 broker pods. NC-30 meeting rooms. NC-25 HNW meeting rooms. Galvanised through SBKJ SBAL-V with 304 stainless SB-ZF1500 sound attenuator in NC-25 rooms.
Branch retail (NRMA, AAMI, RACV, RACQ etc.) — 10 L/s per person AS 1668.2 with queuing-zone increment. NC-35 acoustic. Class 6 retail. Galvanised through SBKJ SBAL-V with internally lined sections at public-facing supply.
In-building data centre and server room — Tier III to Tier IV envelope. N+1 chiller and AHU. Hot-aisle/cold-aisle containment. 22 to 27°C cold-aisle. Refer SBKJ data centre HVAC duct manufacturing guide. Galvanised through SBKJ SBAL-V with 304 stainless via SBKJ SB-ZF1500 where required.
Disaster recovery site — same specification as the in-building data centre at the secondary location.
Document scanning, secure document storage, records management — 18 to 22°C 40 to 50% RH. MERV 13+ filtered supply. AS 4214 gaseous suppression coordination. Galvanised through SBKJ SBAL-V with 304 stainless via SBKJ SB-ZF1500 in the scanning extract.
Print, production, mailroom — dedicated extract with filter for laser printer ozone. HEPA option for mailroom. Galvanised through SBKJ SBAL-V with 304 stainless via SBKJ SB-ZF1500 in mailroom extract.
Kitchen, cafeteria — NFPA 96 commercial kitchen exhaust. 304 stainless grease duct via SBKJ SB-ZF1500. Make-up air via SBKJ SBAL-V. Dining at AS 1668.2 retail rate.
Generator room — AS/NZS 60079 Zone 2 envelope around fuel system. AS 1940 day tank. Combustion air supply 8 to 12 m³/s for 1 MW class. Radiator exhaust. SBKJ spark-resistant manufactured ductwork in Zone 2; SBKJ SBAL-V at heavy gauge for radiator exhaust.
UPS battery room — AS/NZS 60079 Zone 2 above battery bank (lead-acid). 5 to 12 ACH mechanical ventilation. Hydrogen detection at 25% LEL. SBKJ spark-resistant manufactured ductwork in Zone 2 envelope.
Telecommunications room — 20 to 25°C clean supply MERV 13+. Acoustic separation. Galvanised through SBKJ SBAL-V.
End-of-trip facility, amenity — 304 stainless shower extract via SBKJ SB-ZF1500. Toilet exhaust at AS 1668.2 rate via SBKJ SBAL-V.
Construction strategy — mechanical contractor operates SBKJ SBAL-V plus SBKJ SB-ZF1500 plus SBKJ SBFB-1500 plus SBKJ SBPC1500 plus SBKJ SBLR-600 production line cluster in the contractor's own workshop, with spark-resistant manufactured ductwork procured for the AS/NZS 60079 zones. Single source for the combined galvanised, stainless, spiral and heavy-gauge production simplifies coordination and shortens the schedule. Combined production capacity for a 20,000 to 40,000 m² insurance HQ fitout is approximately 6 to 10 weeks on two shifts.
Commissioning and ongoing — AS 4254 duct leakage tested by independent inspector. AS 1668.4 smoke management commissioning. AS 1851 routine inspection schedule. APRA CPS 230 operational risk plan refreshed annually. APRA CPS 234 physical security plan documented. NABERS rating audit. Call centre cooling redundancy test annually. UPS battery room hydrogen detection test annually. Generator monthly full-load test. Re-test for life of the facility.
Talk to the SBKJ engineering team
SBKJ Group manufactures the auto duct production lines, stitchwelders, spiral tubeformers, plasma cutters, laser welders and spark-resistant manufactured ductwork specified for Australian general insurance HQ, life insurance HQ, private health insurance HQ, reinsurance office, broker office and claims call centre fitouts. Our engineering team based in Box Hill North VIC has supported mechanical contractors on insurance sector fitouts across Sydney, Melbourne, Brisbane, Perth, Adelaide and Canberra, and we travel to your workshop for installation supervision, operator training and first-article acceptance.
If you are specifying ductwork for an IAG, Suncorp, QBE, Allianz, Medibank, Bupa, nib, HCF, TAL, MLC, AIA, Resolution Life, Munich Re, Swiss Re, Marsh, Aon, WTW, Steadfast or AUB Group fitout, a roadside assistance call centre at RACV, NRMA, RAA, RAC, RACQ, RACT or AANT, or a generator or UPS battery room supporting any APRA-regulated insurance facility, contact us to discuss the SBAL-V, SBSF-1525, SB-ZF1500, SBFB-1500, SBPC1500, SBLR-600 and spark-resistant manufactured ductwork specification for your project. We will return a written engineering response covering machine selection, production rate, lead time and installation plan within 48 hours.
Visit the SBKJ machines overview or the SBAL-V product page for the full equipment range. Read the related guides covering the banking, ASX trading floor, fintech and super fund, the commercial office tower, the in-building data centre, the government parliament and defence facility, the telecommunications and edge data centre and the hospital and healthcare sector ductwork specifications. Browse all guides at the SBKJ insights index.
SBKJ Group — Box Hill North VIC, Australia. Email sales@sbkjduct.com. Website sbkjduct.com. WhatsApp and phone +61 435 074 994. Or visit the contact page to send a project enquiry. SBKJ exhibits at ARBS 2026.
