Why pet care HVAC is its own engineering discipline
A pet boarding kennel is not a veterinary hospital. A doggy daycare is not a childcare centre. A dog grooming salon is not a hairdresser. A pet retail superstore with a live-animal section is not a supermarket. Each of these facility types has a specific combination of animal occupancy density, vocalisation noise floor, ammonia generation rate, sensible heat load, allergen dispersion pattern, chemical fume profile and biosecurity expectation that needs to be reconciled in the ductwork. The mechanical engineer who copies a veterinary clinic specification onto a kennel project ends up oversizing the surgical extract and undersizing the kennel block, and within six months of opening the facility is fielding complaints about ammonia stratification at floor level, staff respiratory symptoms and the smell of cat urine appearing in the dog reception. The mechanical engineer who copies a childcare specification onto a doggy daycare misses the canine sensible heat load by a factor of three and runs out of cooling capacity on the first 32-degree day of the Sydney summer.
The published Australian HVAC literature on animal facilities concentrates on veterinary clinics, research vivariums and intensive livestock. Our companion guides cover the community veterinary clinic and small animal hospital, the veterinary, animal research and laboratory animal facility and the veterinary teaching hospital, equine clinic and large animal facility. The pet care sector — boarding, grooming, daycare, training and retail — is a distinct discipline because the regulatory framework, the customer expectation and the operating economics differ from veterinary practice in three important ways. First, pet care facilities are open to the public for extended hours, often seven days a week, with high foot-traffic flow that is part of the customer experience rather than incidental to clinical work. Second, animals are accommodated for days or weeks at a time rather than for hours of clinical care, so the chronic environmental conditions matter more than the acute clinical interventions. Third, the operators are predominantly retail and hospitality businesses with margins set by competitive pricing, so the HVAC design has to deliver a defensible welfare outcome at a defensible cost.
This guide is the engineering reference SBKJ delivers when the next project is a Hanrob Pet Hotels build, a Pet Resort fit-out, a new Petbarn superstore with grooming and self-serve wash, a doggy daycare conversion of an industrial warehouse, a Bagsters grooming roll-out, an Adelaide Pet Resort refit or a Pet Cremation Australia branch expansion. Every room type is covered with its air change target, setpoint, pressure regime, material specification and acoustic limit, and the closing section maps it back to the SBKJ duct machine configuration that produces the ductwork most economically. We have written this guide from our office in Box Hill North, Victoria, drawing on commissioning experience across Australian pet care projects from the suburbs of Sydney to the regional centres of Queensland and the metropolitan corridor of Perth.
The regulatory framework — what governs an Australian pet care fit-out
Australian pet care HVAC sits at the intersection of a federal animal welfare framework, state-level legislation that varies meaningfully between jurisdictions, industry-body voluntary accreditation, mechanical and fire engineering standards, and the workplace health and safety regime that applies to every staffed business. None of these documents alone is sufficient; the competent mechanical engineer reads them as a stack.
- Australian Animal Welfare Standards (AAWS). The AAWS framework is the federal-level reference for the welfare of animals in human care, with separate codes for boarding establishments, grooming, transport and breeding. The boarding code sets minimum housing dimensions, environmental conditions, hygiene protocols and staff training requirements. The grooming code sets minimum standards for grooming facilities and the training of groomers. The AAWS framework is enacted at the state level through state legislation rather than as direct federal law.
- State animal welfare legislation. Each state has its own animal welfare legislation, which together with the AAWS code drives the inspector's checklist on any Department of Primary Industries (DPI) audit:
- New South Wales: Prevention of Cruelty to Animals Act 1979 plus the Animal Welfare Code of Practice — Boarding Establishments. NSW inspectors are particularly attentive to ammonia, ventilation, isolation and quarantine protocols, and noise transmission to neighbouring tenancies.
- Victoria: Domestic Animals Act 1994 with the Code of Practice for the Operation of Boarding Establishments. Victorian inspectors require evidence of mechanical ventilation in any kennel block beyond a backyard scale and check that the cattery is separated from canine air paths.
- Queensland: Animal Care and Protection Act 2001 with associated regulations. Queensland inspectors apply the heat-stress provisions strictly because of the Brisbane and Far North Queensland climate.
- Western Australia: Animal Welfare Act 2002 with the WA Code of Practice for the Conduct of Dog Kennel Establishments. WA inspectors are particularly active in Perth metropolitan and outer-suburban kennel audits.
- South Australia: Animal Welfare Act 1985 with associated regulations. SA inspectors check on the ventilation and on the noise transmission to residential neighbours.
- Australian Capital Territory: Animal Welfare Act 1992 with the ACT Code of Practice for Boarding and Training Establishments.
- Tasmania: Animal Welfare Act 1993 with the Code of Practice for Animal Welfare in Boarding Establishments.
- Northern Territory: Animal Welfare Act 1999 with the Code of Practice for the Care and Use of Animals for Scientific Purposes (the NT boarding-specific code is limited).
- AS 1668.2 (Australian Standard for mechanical ventilation in buildings). Sets the minimum outdoor-air rate for occupied rooms. Reception, retail front, office, staff and dog training school spaces are sized at 10 L/s per person plus 0.6 L/s/m² of floor area, in line with general assembly occupancies. Animal-occupied rooms are not directly covered by AS 1668.2 and the designer applies the ASHRAE Applications Handbook Chapter 11 analogue scaled to the kennel, cattery, daycare and isolation room briefs described in this guide.
- AS/NZS 4254 (Ductwork for air-handling systems). Construction standard for galvanised and stainless steel ductwork, seam types, sealant classes, support and bracing. Pet care fit-outs typically use seal class A construction for kennel extract, cattery extract, isolation room extract, bath area extract, chemical store extract and pet crematorium retort to limit leakage of ammonia, allergen, disinfectant aerosol and combustion gas into ceiling voids and adjacent tenancies.
- AS 1530.4 (Methods for fire tests on building materials, components and structures). Establishes the fire resistance level (FRL) test methodology for fire-rated ductwork. Penetrations of fire-rated walls in any larger pet care facility — particularly in mixed-use centres where the boarding facility is part of a strata complex — require fire-rated duct assemblies tested to AS 1530.4.
- AS 1851 (Routine service of fire protection systems and equipment). Governs the annual drop-test and maintenance of fire dampers in HVAC ductwork. The facility's essential safety measures certificate depends on AS 1851 compliance and on a record of inspection.
- AS 4801 (Occupational health and safety management systems). Sets the framework for the facility's workplace health and safety system, including risk assessment of staff exposure to ammonia, allergen, dust, disinfectant chemistry and noise. AS 4801 ties directly into the Safe Work Australia workplace exposure standards (WES) discussed below.
- ASHRAE Applications Handbook Chapter 11 (Animal Facilities). The international design reference for animal facility ventilation. The chapter covers air change rates, pressure regimes, filtration levels and acoustic targets for laboratory animal facilities, kennels, catteries, aviaries and aquariums. Australian designers apply Chapter 11 directly to the kennel, cattery, isolation and exotic-species programs in any pet care facility.
- AS/NZS 2243.3 (Safety in laboratories — microbiological aspects and containment facilities). Light reference for the pet boarding sector but applicable in any facility with significant infectious-disease isolation needs — the cat and dog isolation rooms borrow the negative-pressure and HEPA-extract concepts from PC2 laboratory practice.
- Pet Industry Association of Australia (PIAA) standards. PIAA is the peak industry body for the pet care sector in Australia and operates a voluntary accreditation programme for boarding kennels, catteries, grooming, retail and other pet-services businesses. The PIAA Accredited Business mark is the de facto industry benchmark for facility quality and is increasingly required by corporate insurers and franchise operators. The PIAA standards reference AS 1668.2, AS/NZS 4254 and the AAWS code of practice as their starting framework.
- Greyhound Australasia and state-level Greyhound Racing regulators. Greyhound Racing NSW (GRNSW), Greyhound Racing Victoria (GRV), the Queensland Racing Industry, Racing & Wagering WA, Greyhound Racing SA and Tasracing each set facility standards for racing kennel operators. Greyhound kennels are a specialist sub-category of the dog kennel program with additional welfare-and-training infrastructure requirements but the underlying ventilation framework is the same.
- Cat Genetic Defects Network and the cat breeding community. Light reference for the pet care sector but relevant where a cattery doubles as a breeding facility — breeding catteries attract additional welfare scrutiny and the ventilation specification is correspondingly more stringent.
- Pet Welfare Foundation, Australian Veterinary Association (AVA) and Pet Care Industry Council (PCIC). Adjacent industry bodies that publish guidance documents periodically referenced in PIAA audits and DPI inspections.
- Safe Work Australia workplace exposure standards (WES). The single most important reference for the pet care HVAC engineer is the Safe Work Australia WES schedule, which sets the legal occupational exposure limits for chemical and biological agents. The relevant entries for pet care are: ammonia at 25 ppm short-term exposure limit (STEL) and 17 ppm time-weighted average (TWA); carbon dioxide at 5000 ppm TWA (relevant in overcrowded boarding); formaldehyde at 1 ppm STEL (relevant in rare sterilant use); chlorine at 0.5 ppm STEL (relevant in bleach disinfection); peracetic acid at 0.4 ppm STEL (relevant in Virkon S disinfection routine in pet boarding); volatile organic compounds (VOC) — general (relevant in cleaning chemistry); respirable dust at 10 mg/m³ and respirable crystalline silica at 0.05 mg/m³ TWA (relevant in dog hair, dander, sawdust bedding and cat litter dust); allergen Fel d 1 (the major cat allergen) and Can f 1 (the major dog allergen) at facility-determined internal targets because no national WES has been published.
None of these are optional. The mechanical engineer who signs the certificate of compliance is the one who reconciles them at every room boundary.
The dog kennel block — ammonia, acoustics and high air change
The dog boarding kennel block is the highest-load room in the entire facility. It is also the room that is most often under-specified at design and most often the cause of operating complaint after opening. Get the kennel block right and the rest of the facility runs in its shadow; get it wrong and no amount of grooming or daycare revenue covers the welfare-and-reputation cost.
The room program: 6 to 60 individual runs in a single block, each typically 1.5 m wide by 2.0 m deep by 2.0 m high with a raised bed, water bowl and feed bowl, separated by sealed dividing panels for biosecurity and visual stress reduction. The runs face onto a central corridor or a pair of corridors, with sealed acoustic doors on the run side and the corridor side. The block is typically 100 to 400 m² of floor area at 2.4 to 3.0 m ceiling height.
The dominant air-quality problem is ammonia. Canine urine, when not removed within hours of voiding, hydrolyses to ammonia at concentrations that exceed the Safe Work Australia workplace exposure standard within an enclosed run. Field measurements in poorly ventilated commercial kennels across Australia routinely show ammonia at 20 to 40 ppm at floor level — the WES is 25 ppm short-term and 17 ppm time-weighted, and dogs at ground level get the worst of any stratified concentration because ammonia is denser than air and pools at floor level. The clinical consequence is conjunctivitis, kennel cough susceptibility and a documented welfare deterioration over a multi-day boarding stay.
The secondary load is carbon dioxide. An adult dog produces 0.04 to 0.06 m³/hr of CO2 at rest, rising to 0.15 to 0.20 m³/hr during sustained vocalisation. A kennel block of 30 dogs at peak vocalisation generates 4.5 to 6.0 m³/hr of CO2, which in a poorly ventilated block of 400 m² at 2.7 m ceiling height (1,080 m³ volume) would reach 5,000 ppm above ambient within an hour. The WES is 5,000 ppm TWA; the kennel block must be sized to keep CO2 well below this in steady-state operation.
The third load is sensible heat. An adult dog generates 200 to 300 watts of sensible heat at rest and substantially more during activity. A kennel block of 30 dogs generates 6 to 9 kW of sensible heat continuously, which on a 32-degree Brisbane summer day with solar gain through any roof penetration is a substantial cooling load. The temperature setpoint in the kennel block is 18 to 22 degrees Celsius — warmer than human-occupied spaces because the staff are continuously moving while in the block and the dogs are not.
The fourth load is dust, dander and allergen. Dog dander (skin cells, hair fragments, saliva-dried particles) is a continuous source of airborne particulate that carries the major dog allergen Can f 1. The respirable dust load in a busy kennel block routinely reaches 2 to 5 mg/m³, well below the WES respirable dust limit of 10 mg/m³ but high enough to cause staff respiratory complaints and to trigger immunological sensitisation in susceptible staff over months to years of exposure.
The fifth load is odour. Beyond ammonia, canine faecal odour, anal-gland secretion odour, food odour, treat odour and the cumulative musk of long-stay residents adds up to a strongly identifiable odour profile that propagates into adjacent zones if the air handling is not correctly contained. The reception of a kennel facility should smell of nothing in particular; if the visitor smells the kennel block on entry, the ventilation has failed.
Control of all five loads in a single ventilation specification: 20 to 30 air changes per hour with 100 percent outside air on the exhaust path, never recirculated to any other zone. Supply diffusers at high level along the corridor wall, delivering tempered air down into the run; dedicated low-level extract grilles along the run frontage at floor level capturing ammonia, CO2 and odour at the point of generation; the exhaust riser terminating at least 3 m above the roof line and 7.5 m clear of any building intake per AS 1668.2 dispersion principles. Supply filtration at HEPA H10 or MERV 14 minimum on the incoming air stream to remove pollen, dust, dander and bioaerosols.
The acoustic target is NC-40 to NC-45 — intentionally relaxed from the clinical areas of a veterinary practice because the canine vocalisation noise floor is 70 to 85 dB(A) during peak vocalisation periods anyway. The acoustic priority is the wall, floor and ceiling construction (concrete-block walls, sound-absorbing acoustic ceiling tile, sealed acoustic doors on every run and on the block exit, double-glazed observation windows from the corridor to the run) rather than the duct silencer. The duct contribution is making sure the supply branch does not telegraph noise from one run into the next through the diffuser — solved by individual flex-duct runs to each diffuser, not a continuous slot diffuser shared across multiple runs.
Duct material in the kennel block is 304 stainless from the grille face back at least 3 m. The internal duct surface is exposed to ammonia in the extract path, to water-aerosol from the daily hosing-down disinfection routine, and to quaternary ammonium and chlorinated detergents in routine cleaning. Galvanised duct in this service fails by zinc etching within 24 to 36 months. Externally the duct is galvanised because the ceiling-void environment is benign. The supply duct is externally insulated galvanised because supply air is HEPA-filtered upstream and is not in contact with any biological contamination.
The indoor exercise yard and the canine enrichment space
Larger boarding kennels in metropolitan Australia — Hanrob Pet Hotels, Pet Resort, Adelaide Pet Resort, Pawsome Resort, Petbarn Pet Resort — provide indoor exercise yards or enrichment spaces where dogs are taken for off-run play, exercise and socialisation during the boarding stay. The indoor exercise yard is a separate room program from the kennel block and has its own ventilation specification.
The room program: 50 to 200 m² of floor area, typically with a sealed concrete floor, painted block walls and an acoustic ceiling, accommodating 4 to 12 dogs at any time under the supervision of a staff member. The room is in continuous use during the working day with rotating groups of dogs taken from the kennel block for 30 to 60 minute exercise sessions.
The dominant load is sensible heat at activity. Dogs in active play generate 300 to 500 watts of sensible heat each, so a yard of 8 dogs at peak activity generates 2.4 to 4.0 kW of sensible heat continuously. The cooling load adds to the heat from the staff member, from any solar gain through skylights or roof glazing, and from the lighting on the activity. Temperature setpoint is 18 to 21 degrees Celsius — cooler than the kennel block because the dogs are actively working.
Air change rate is 15 to 20 ACH at 100 percent outside air on the exhaust path. Supply at high level via large-format diffusers sized to deliver air at low face velocity (below 2.5 m/s on the face) to avoid creating updrafts that disturb light-coated dogs. Extract at low level around the perimeter capturing dander and dust at the floor. The room is operated at neutral pressure relative to the kennel block corridor; air does not flow from the exercise yard back into the kennel block because contaminated air would disperse to multiple runs.
Acoustic target is NC-45 because the room is dominated by canine vocalisation during active play. The duct contribution is to deliver air at low face velocity through over-sized diffusers and to avoid any diffuser whine in the supply path that telegraphs into the exercise space.
Duct material is 304 stainless on extract from the grille face back at least 3 m because of the cleaning chemistry; supply duct is externally insulated galvanised.
The cattery — why cats need their own AHU
The single most common ventilation mistake in Australian pet boarding design is sharing the air handling unit between the canine kennel block and the cattery. The mistake is made because the cattery is typically smaller than the kennel block (4 to 30 cages versus 6 to 60 runs) and the obvious capital-cost economy is to size one AHU for both. The mistake is made about half the time in fit-outs we audit.
Three reasons not to share. First, cats are profoundly stressed by canine pheromones, by canine vocalisation transmitted through shared ductwork and shared duct silencers, and by the smell of dog urine and dander in supply air. The clinical observation across the Australian boarding industry is that cats boarded in dog-shared-air catteries lose 5 to 10 percent of body weight in a 5-day stay and present with stress-induced lower-urinary-tract disease at 3 to 4 times the rate of cats in segregated catteries. The welfare consequence is severe enough that PIAA audit standards now require separation of feline and canine ventilation as a baseline criterion. Second, feline pathogens are aerosolised efficiently and survive in shared duct biofilms. The list includes feline herpesvirus type 1, feline calicivirus, Bordetella bronchiseptica, Mycoplasma felis, Chlamydia felis and feline panleukopenia virus. A shared duct system is a documented infectious-disease propagation path. Third, dog-allergic guests who tour the cattery before leaving their cat in care should not be exposed to dog dander.
The correct design provides a dedicated AHU for the cattery, on a dedicated extract riser, with a separate building penetration. The cattery air system is fully independent from the canine air system — separate intake, separate filtration, separate ducting, separate exhaust, separate building penetration at the roof.
The room program: 4 to 30 individual cages or condominium units in a single room, each typically 0.6 m wide by 0.6 m deep by 0.9 m high with a litter tray, water bowl, feed bowl, raised perch and bedding. Condominium units (larger multi-level cat enclosures) are 1.2 m wide by 0.6 m deep by 1.8 m high with multiple platforms, a litter zone, a sleeping zone and a feeding zone. The room is typically 30 to 100 m² of floor area at 2.4 to 2.7 m ceiling height.
Air change rate is 12 to 15 ACH at 100 percent outside air on the exhaust path, lower than the kennel block because cats produce less ammonia (cat urine has a lower urea content per litre than dog urine and the cat uses a litter box that buffers ammonia release with absorbent substrate), less CO2 (cats are quieter than dogs at baseline), less sensible heat (cats are smaller than the average boarded dog and generally less active in cage) and less odour per cage. Temperature setpoint is 21 to 24 degrees Celsius — slightly warmer than the kennel block because cats prefer it. Relative humidity 40 to 55 percent.
Acoustic target is NC-35, considerably lower than the kennel block because the feline noise floor is much lower than the canine noise floor — a calm cattery is whisper-quiet and the diffuser face velocity has to be low enough to not introduce its own noise. Supply diffuser face velocity should be below 2.5 m/s.
Duct material is 304 stainless on extract from the grille face back at least 3 m because of urine vapour, litter dust, quaternary ammonium disinfectant in cleaning and the routine spray-down of cages between residents. Supply duct is externally insulated galvanised. The supply diffuser is fitted with a fine mesh insect screen at the riser termination because cats are extraordinarily skilled at extracting any insect that finds its way into a cage and the consequence is a stressed cat at midnight.
Cat and dog isolation rooms — single-pass HEPA on negative pressure
Every boarding facility above the smallest single-operator scale should provide isolation room capacity for sick or quarantine animals. The role of the isolation room is to contain an infectious-disease case (cat flu, panleukopenia, ringworm, kennel cough, parvovirus, leptospirosis) or a new arrival in pre-mixing quarantine until veterinary clearance. The isolation room is the highest-criticality space in the boarding facility and its ventilation is correspondingly the most stringent.
The room program: one to two cages or a single run per isolation room, sealed self-closing door with a glass observation panel, internal hand-wash basin with elbow-operated tap, a PPE station immediately outside the door with disposable gowns, gloves, P2 respirators and shoe covers, a sharps disposal bin and a clinical waste bin inside the room, an autoclave-sterilisable cage and bedding inside the room. The room is typically 6 to 12 m² with a 2.4 m ceiling.
Pressure regime: minus 5 to minus 10 pascals relative to the adjacent corridor, verified at commissioning with a digital manometer and again at quarterly intervals. A visual flag indicator inside the room — a simple swing flap behind a glass panel — confirms negative pressure is maintained whenever the room is occupied. The negative pressure is what keeps contaminated air contained inside the isolation room every time the door opens. The door does not have an undercut; instead a transfer grille in the wall above the door delivers make-up air at the controlled rate that maintains the pressure differential.
Air change rate is 15 to 20 ACH with single-pass extract to atmosphere via a HEPA H13 filter (99.95 percent efficient at 0.3 micron MPPS), never recirculated to any other zone in the building. The HEPA filter is in a bag-in bag-out housing with pressure differential monitoring across the filter and an alarm to the staff station if the differential drops outside the operating range. The extract fan is sized to maintain 15 to 20 ACH at the dirty-filter end-of-life pressure drop.
Temperature setpoint is 22 to 24 degrees Celsius — at the warmer end of the cattery and kennel range because sick animals lose thermoregulation. The supply diffuser is upsized to deliver air at low face velocity (below 2.0 m/s) to avoid creating updrafts that disturb a stressed sick animal.
Duct material on extract is 304 stainless from the grille face back through the HEPA-bagged plenum to the discharge fan. The plenum upstream and downstream of the HEPA housing is fully welded longitudinal seam — the seam type is what prevents pinhole leakage of contaminated air at the duct-to-plenum joint, and welded construction is mandatory for HEPA-bagged duct in any single-pass extract path. The SBKJ SB-ZF1500 stitchwelder is the appropriate machine for the longitudinal weld on a stainless plenum at the size and gauge typical of an isolation room extract.
Acoustic target is NC-35 to keep the isolation room calm enough that a sick animal can rest. The acoustic target is achievable because the supply diffuser is upsized and the room volume is small.
The dog grooming salon — fur, fume and downdraft capture
The dog grooming salon is one of the highest-growth segments of the Australian pet care sector, driven by the rise of professional grooming as a recurring expense category for the pet-owning household and by the consolidation of grooming under retail superstore brands (Petbarn Grooming, PetStock Grooming) and dedicated salon chains (Bagsters, Dogue, Aussie Pooch Mobile for the mobile end of the market). The salon is also one of the most complex HVAC briefs because it combines three distinct extract problems in a single working space: loose fur during clipping, hot moist plume during dryer use, and chemical fume during shampoo and conditioner application.
The room program: a working salon floor with 2 to 8 grooming tables, each with a hydraulic adjustable height table and a grooming arm overhead; a bath area separated by a half-wall or curtain with 1 to 4 stainless steel bath tubs at hydraulic adjustable height; a dryer table area with floor-mounted forced-air dryers (typically 2.5 to 4 kW each); a reception counter; a retail-product display; a holding area for dogs waiting on collection; a staff break room; a chemical store for bulk shampoo, conditioner, flea treatment and disinfectant. Total salon floor area 80 to 200 m² at 2.7 to 3.0 m ceiling height.
The grooming table extract is by downdraft capture. A perforated grille is set into the working surface of the table or in the floor immediately around the table, connected to a duct that draws loose fur, dander and dust away from the breathing zone of the groomer and the dog. The face velocity at the grille is 0.5 to 0.8 m/s, sized to capture airborne fur at typical scissoring distance without lifting it off the dog. The downdraft system is interlocked with the table so that switching the table on switches the extract on. Each grooming table has its own dedicated extract drop.
The dryer table extract is dedicated and oversized. A forced-air dryer produces a 4 to 6 m³/min plume of warm moist air at 30 to 40 degrees Celsius and 50 to 70 percent RH depending on coat moisture content. The plume carries a substantial fur load. The extract grille is positioned directly above the dryer table at 1.8 to 2.0 m height with a face velocity of 1.5 to 2.5 m/s, sized to capture the entire plume before it disperses to the salon floor. The dryer extract is 80 to 120 L/s per table on a dedicated fan.
The bath area extract is the chemical-fume capture path. Shampoo, conditioner, flea treatment (containing pyrethrin, fipronil, imidacloprid, fluralaner) and quaternary ammonium spray-down between dogs all release volatile and semi-volatile compounds during application. The bath area extract is 12 to 15 ACH dedicated to atmosphere, with a face capture grille immediately above the bath bowl at 0.5 to 1.0 m face velocity. The bath area is at minus 5 pascals relative to the main salon to contain fume.
The main salon floor runs at 10 to 15 ACH with supply at the perimeter delivering tempered air at the staff working height and extract via the table downdraft grilles, the dryer extract above the dryer tables and the bath area extract grilles. Total airflow on the salon is the sum of all the individual extract paths plus a margin for room cleaning. Temperature setpoint is 20 to 22 degrees Celsius — cooler than reception because the groomers are active and the dryers add radiant heat at the dryer tables.
Relative humidity 40 to 55 percent. Lower than that and dog coat static is a problem (long-coated breeds like the Poodle, Bichon Frise and Maltese pick up so much static during dry brushing that they become uncomfortable and harder to groom); higher than that and the dryer takes longer to dry each dog and the salon's revenue-per-groomer-hour drops.
Acoustic target is NC-40 to NC-45 — the dryers, the grooming clippers and the dogs are all noise sources and the salon's noise floor is high anyway. The duct contribution is keeping diffuser whine out of the supply path.
Duct material on the bath area extract is 304 stainless from the grille face back at least 3 m because of the chemical-fume exposure and the routine wet cleaning. The dryer extract is 304 stainless because of the wet plume and the routine cleaning. The downdraft table extract is galvanised because the captured material is fur and dust rather than wet fume. The general salon supply is externally insulated galvanised. The chemical store extract (if a separate room) is 304 stainless.
The self-serve dog wash booth
The self-serve dog wash booth is a feature of most modern Australian pet retail superstores (Petbarn, PetStock, My Pet Warehouse, City Farmers) and of a number of standalone dog-wash operators. The customer pays a fee, leashes their dog into the booth, selects from a shampoo and conditioner range, washes the dog using the booth's hand shower, and dries the dog using the booth's forced-air dryer. The booth runs for 20 to 40 minutes per customer and is in continuous use for 8 to 10 hours a day in busy retail locations.
The room program: 4 to 6 m² of floor area at 2.4 m ceiling height, a stainless steel raised bath (typically 0.6 m above floor level for ergonomic customer use), a hand shower with a thermostatic mixer, a shampoo and conditioner dispensing station with three to five products, a forced-air dryer on a swivelling arm, a leash clip at the front of the booth and a curtain or door at the entry. The booth is operated by a coin-or-card payment system at the entry.
The ventilation brief: 10 to 12 ACH dedicated extract direct to atmosphere, with the booth at minus 5 pascals relative to the adjacent retail floor to contain shampoo fume and to capture the wet warm plume from the dryer. Supply by transfer from the retail floor through a high-level grille at the entry. Temperature inside the booth runs warmer than the retail floor (typical 22 to 24 degrees) because the customer is doing physical work and the dryer adds heat; the booth is not separately temperature-conditioned beyond what the retail floor delivers.
Heat recovery on the extract is justified at scale because the booth is in continuous use during business hours and the dryer plume carries 1 to 2 kW of recoverable sensible and latent heat. The heat recovery is by a plate-and-fin air-to-air exchanger with a wash-down provision for the wet side.
Acoustic target is NC-40, achievable because the booth is intentionally noisy (dryer, water flow, customer interaction) and the noise floor is high.
Duct material is 304 stainless for the first 3 m of extract from the grille face because of the wet plume and the chemical-fume exposure. Beyond 3 m the duct transitions to galvanised externally insulated. The supply transfer grille from the retail floor is galvanised.
Doggy daycare — high air change, multiple dogs, sustained activity
Doggy daycare is the segment of the Australian pet care sector that has grown fastest in the metropolitan markets over the past decade, driven by the apartment-dwelling pet-owning demographic and by the operator chains that have built scale around the model — Camp Out for Dogs in Sydney, Doggie Day Spa, Dogue in Brisbane and the Camp Bow Wow Australia franchise rollout. The daycare is conceptually different from the boarding kennel in that the dog is not housed individually in a run but is in a group play environment for the working day, returning to the owner each evening.
The room program: 100 to 400 m² of floor area divided into 2 to 4 group play areas separated by sealed gates, with sealed concrete or rubberised floor finish, painted block walls, acoustic ceiling tile and double-glazed observation windows from a viewing corridor. Each play area accommodates 8 to 20 dogs at peak times under continuous staff supervision. Adjacent to the play areas are quiet rest zones with raised beds for dogs that need a break from the group, a holding area for dogs waiting on owner collection, a feeding area where individual feeding is provided at staff discretion, and a wash-down zone for incident clean-up.
The dominant load is sensible heat at activity, multiplied by the population of the play area. A play area of 16 dogs at active play generates 4.8 to 8.0 kW of sensible heat continuously, well above the boarding kennel block per square metre. The cooling load on a 32-degree summer day with solar gain through skylights or roof glazing easily exceeds 100 W/m² and the AHU must be sized for the worst-case combination of internal heat plus solar plus outside air load.
The secondary load is allergen, dust and dander. Multiple dogs at activity generate a continuous dander load that is several times that of a static boarding kennel. Staff working in the play area for 8 hours a day at this dust load are at substantial risk of immunological sensitisation to Can f 1 over months to years of exposure.
The tertiary load is CO2 from continuous respiration during active play and from vocalisation. CO2 rises faster in a daycare play area than in a static kennel block per dog because the metabolic activity is higher.
Control: 15 to 20 ACH at 100 percent outside air on the exhaust path, never recirculated to any other zone. Supply by large-format diffusers at the perimeter delivering tempered air at low face velocity (below 2.0 m/s) to avoid creating drafts that disturb light-coated dogs and to avoid lifting dust off the floor. Extract at low level around the perimeter capturing dander at the floor. The room is operated at neutral pressure relative to the adjacent staff zones.
Temperature setpoint is 20 to 22 degrees Celsius. The cooling load is substantial and the AHU is correspondingly oversized compared with a same-area retail floor. Variable-air-volume (VAV) reheat is used to step the supply rate down during quieter periods of the day.
Acoustic target is NC-45 to NC-50 — the play area is dominated by canine vocalisation and the noise floor is high. The duct contribution is keeping diffuser whine out of the supply path.
Duct material on extract is 304 stainless from the grille face back at least 3 m because of cleaning chemistry; supply is externally insulated galvanised.
Dog training school — large hall, intermittent activity, acoustic management
The indoor dog training school is the venue for obedience training, agility training, scent training, behavioural correction and group training classes. The leading Australian operators run group classes of 6 to 12 dog-handler pairs in 60 to 90 minute sessions, typically two to four classes per day on the training-school floor.
The room program: 80 to 250 m² of open floor area at 3.0 to 4.0 m ceiling height (taller than other pet care spaces because of agility equipment), painted block walls, rubberised or sealed concrete floor, acoustic ceiling tile, viewing area for owners along one wall. The room is empty of furniture during a class; mats, agility obstacles and training props are stored along the side walls.
The activity load is intermittent. During a class the room holds 6 to 12 dog-handler pairs in active training (sensible heat 200 to 400 W per dog plus 150 W per handler) for 60 to 90 minutes. Between classes the room is empty for 15 to 30 minutes. The HVAC system must clear the post-class heat, dander and CO2 in the changeover window so the next class starts in fresh conditioned air.
Air change rate is 10 to 15 ACH, with VAV reheat to step the supply rate up during class and back during the changeover. Temperature setpoint 20 to 22 degrees Celsius. Supply at high level by large-format diffusers sized for low face velocity; extract at low level around the perimeter.
Acoustic target is NC-40 — the room is dominated by handler voice commands, dog vocalisation responses and the noise of dogs in training. Keeping diffuser whine below this floor is the duct's contribution.
Duct material is externally insulated galvanised on supply and 304 stainless on extract from the grille face back at least 3 m because of the routine cleaning chemistry applied between classes.
Pet retail superstore — dry goods, live animals, humidity zoning
The Australian pet retail superstore market is dominated by Petbarn (Greencross — 240+ stores), PetStock (Woolworths-acquired — 200+ stores), My Pet Warehouse, City Farmers in Western Australia, PetO in Sydney and Pet Magazine. The retail floor is conceptually similar to a supermarket — 800 to 2,500 m² of retail floor area at 4.0 to 5.0 m ceiling height under exposed steel structure — but with the addition of a live animal section, often a grooming bay, often a self-serve dog wash booth and sometimes an in-store veterinary clinic (Greencross-Petbarn co-located).
The dry goods retail floor (food, accessories, toys, bedding, leads, collars, kennels, training equipment) runs at 6 to 10 ACH at office-grade comfort conditions. Temperature 21 to 23 degrees Celsius, RH 40 to 55 percent. Supply at high level via large-format diffusers; extract at high level via centralised return grilles. The retail floor is operated at neutral to slightly positive pressure relative to outside to keep dust and outdoor air out of the store entry.
The live animal section is conceptually separate. Where the store includes an aquarium hall (fish, aquatic plants, aquarium accessories), the aquarium hall is on a separately ducted handling system at 10 to 15 ACH with humidity control. Aquarium hall humidity is naturally elevated by tank evaporation — a 100-litre display tank evaporates 0.5 to 1.5 litres of water per day depending on lighting and surface area — and the cumulative latent load from 20 to 40 display tanks in a typical Petbarn aquarium hall is substantial. The aquarium hall HVAC has to handle this latent load while keeping the surrounding dry-goods retail floor at 40 to 55 percent RH; the aquarium hall is typically at 60 to 70 percent RH and the boundary is sealed with a partition wall.
The reptile and small mammal section is on its own zone, typically combined with the aquarium hall but with separate temperature setpoints — reptiles housed in the cooler ambient room with species-specific micro-environments delivered at the enclosure level by heat lamps and ceramic emitters, small mammals in the rabbit-hutch and rodent-cage display at 20 to 24 degrees Celsius and 45 to 55 percent RH.
The bird section (where present — many superstores no longer stock birds because of state-level restrictions on parakeet and finch sale) is on a separately ducted handling system with HEPA filtration on the supply, dust capture at the cage face for feather and seed husk particulate, and the same psittacosis biosecurity considerations described in our veterinary, animal research and laboratory animal HVAC guide.
The retail-floor acoustic target is NC-40 to NC-45 — the store is dominated by background music, customer conversation, the occasional dog barking in the grooming area and the dryer noise from a wash booth. Diffuser whine should be inaudible against this floor.
Duct material on the dry goods retail floor is galvanised throughout. Duct material on the aquarium hall is externally insulated galvanised on supply and 304 stainless on extract from the grille face back at least 3 m because of the humidity, the salt-water aerosol from any marine display tanks, and the cleaning chemistry. The reptile and small mammal section uses externally insulated galvanised on supply and 304 stainless on extract because of substrate dust and cleaning chemistry.
The pet crematorium retort room — combustion, ash, odour
The pet crematorium is a specialist sub-sector of the Australian pet care industry, dominated by Pet Cremation Australia, Pets in Peace, Companions Forever and Lawnswood Memorial Park, with a long tail of smaller regional operators. Many pet boarding facilities and veterinary practices outsource cremation to one of these operators rather than running on-site cremation. Where on-site cremation is provided, the retort room is one of the most stringent HVAC briefs in the entire pet care sector.
The room program: a single retort (the cremation furnace) of 1.5 to 3.0 cubic metre chamber size, gas-fired or oil-fired with a primary and secondary combustion chamber, an ash collection tray, a control panel and a flue with abatement train. The retort room is typically 30 to 60 m² of floor area at 4.0 to 5.0 m ceiling height to accommodate the retort itself and to provide working space around it. Adjacent to the retort room is a holding area for awaiting cremation (refrigerated, typically 4 degrees Celsius for short-term storage of pets awaiting service), a viewing room (for owners who choose to attend the cremation), an ash processing area where the ash is collected, ground in a cremulator and packaged, and a memorial product display area.
The retort itself has its own dedicated combustion air supply and dedicated flue with abatement train (typically a wet scrubber, dry sorbent injection, or thermal oxidiser) and the abatement train is outside the HVAC scope — it is governed by state environmental protection authority licensing under each state's air pollution legislation. The HVAC scope is the room ventilation.
The room ventilation brief: 10 ACH on the retort room dedicated extract direct to atmosphere, never recirculated. The room is operated at slightly negative pressure relative to the adjacent corridor (-5 Pa) to contain any incidental odour, combustion gas leak or ash dust to the room. Temperature setpoint is 22 to 25 degrees Celsius during normal operation; the retort itself is heat-shielded but ambient temperature rises during operation and the HVAC system has to absorb the residual heat.
Duct material on the retort room extract is 304 stainless minimum from the grille face back at least 3 m because of the elevated temperature, the possibility of acidic combustion product condensate at the duct surface and the routine cleaning chemistry applied in the ash processing area. Spark-resistant tooling on any duct work in the retort room is mandatory because of the proximity of combustion equipment and ash handling. The SBKJ machine line supports spark-resistant tooling on request for crematorium retort fabrication.
The ash processing area extract is on a dedicated path at 15 to 20 ACH because the cremulator (the ash-grinding mill) generates fine ash dust that needs containment at the cremulator hood and not in the operator's breathing zone. Duct material is 304 stainless on the cremulator extract because of the alkaline ash chemistry. A HEPA H13 filter is on the extract path before discharge to atmosphere to prevent ash particulate dispersion to neighbouring tenancies.
The viewing room (where owners attend) is on a separate ventilation path from the retort room and the ash processing area, with its own supply and extract, neutral pressure relative to the corridor, 8 to 10 ACH, NC-30 acoustic target. The viewing room is the highest-emotional-impact space in the facility and the ventilation should be quiet, even-temperature and unobtrusive.
The holding area refrigeration is by dedicated refrigeration plant; the HVAC system maintains the surrounding room at 18 to 22 degrees Celsius so the refrigeration plant operates within its design envelope.
Reception, retail front and office — clean, comfortable, brand
The reception of a pet care facility is the first impression on every customer and the touchpoint that drives review-platform sentiment. The reception ventilation has one job: make the reception smell of nothing in particular. If the visitor smells the kennel block, the cattery or the grooming chemicals on entry, the ventilation has failed.
The room program: 20 to 60 m² of floor area at 2.7 to 3.5 m ceiling height, with a reception counter, retail product display, customer seating, a check-in area with weigh scales and a kennel-card station, often a small viewing window into the kennel block or cattery (so customers can see where their pet will be staying).
Ventilation: 6 to 10 ACH at outdoor air to AS 1668.2 minimums (10 L/s per person plus 0.6 L/s/m²), temperature 21 to 23 degrees Celsius, RH 40 to 55 percent. The reception is operated at slightly positive pressure relative to the kennel block and cattery (typically +5 Pa) and is on a separate ducted handling system from the animal-occupied zones. This is the pressure cascade that keeps the reception clean.
Acoustic target is NC-35. The reception is where end-of-stay conversations happen, where customer concerns are raised at pickup and where the staff need to be heard by the customer over the phone. Diffuser whine matters.
Duct material is galvanised throughout. Internal acoustic lining is acceptable in reception because biological cleaning is not required.
Staff amenity, lunch room and back of house
The staff amenity zone — lunch room, change room, locker room, toilet, shower room, dedicated office for the facility manager — is separated from the animal-occupied zones and is on its own ventilation handling. The intent is to give staff a chemical-free, allergen-managed space to take breaks and to change out of work clothes before leaving the facility.
Ventilation: 8 to 10 ACH at outdoor air to AS 1668.2 minimums (10 L/s per person plus 0.6 L/s/m²). Lunch room supply is HEPA H10 minimum because staff may carry dander on their work uniform and the lunch room should be the allergen-managed refuge in the facility. Toilets, change rooms and shower rooms have dedicated extracts to atmosphere per AS 1668.2 conventions. Temperature 21 to 23 degrees Celsius.
Acoustic target NC-35. Duct material is galvanised throughout.
Veterinary pharmacy — if the facility is co-located with a vet clinic
A small number of larger pet care facilities are co-located with an in-house or partner veterinary clinic, particularly the Greencross-Petbarn combined sites and the larger Hanrob and Pet Resort campuses with attached veterinary capacity. Where a veterinary pharmacy is on the same fit-out, the pharmacy is on its own dedicated ventilation path matching the specification in our veterinary clinic and small animal hospital HVAC duct guide.
The brief in summary: 22 to 24 degrees Celsius, 6 ACH, neutral pressure, dedicated extract to atmosphere on any controlled-drug storage bunded room, dedicated extract on any compounding bench, refrigerated vaccine storage on a monitored alarm circuit. Duct material 304 stainless on compounding extract, galvanised elsewhere.
Acoustic specification across the pet care facility
Pulling the acoustic targets together in a single table for the engineer designing the silencer schedule:
- Reception and retail front: NC-35 to NC-40. Customer interaction and phone calls.
- Consult and check-in: NC-35. End-of-stay conversations.
- Office and staff amenity: NC-35.
- Kennel block: NC-40 to NC-45. Dog vocalisation dominates anyway.
- Indoor exercise yard: NC-45. Active play dominates.
- Cattery: NC-35. The feline noise floor is low and the cats need it quiet.
- Cat isolation room: NC-35. A sick cat needs quiet.
- Dog isolation room: NC-40. The dog vocalisation noise floor is high.
- Grooming salon main floor: NC-40 to NC-45. Clippers, dryers and dogs.
- Grooming bath area: NC-45. Water flow and dryer plume.
- Dryer table area: NC-50. Dryer noise dominates.
- Self-serve dog wash booth: NC-40 to NC-45.
- Doggy daycare playroom: NC-45 to NC-50. Multiple dogs in active play.
- Dog training school: NC-40.
- Pet retail dry goods floor: NC-40 to NC-45.
- Pet retail aquarium hall: NC-40. Aquarium pumps and lighting fans dominate the noise floor anyway.
- Pet retail reptile and small mammal: NC-40.
- Pet crematorium retort room: NC-45. Combustion fan dominates.
- Pet crematorium viewing room: NC-30. The lowest target in the facility — owners attending the cremation should not hear the HVAC.
- Wash bay and laundry: NC-45.
- Chemical store: NC-40.
Achieving these targets is the duct silencer engineer's responsibility, working back from the diffuser face through the supply branch to the air handling unit. The duct fabricator's contribution is making sure the seam construction, the joint sealant and the supports do not introduce flanking noise that bypasses the silencer.
Duct material decision matrix
Pulling the material specification together across the pet care room program:
- Galvanised steel coil to AS/NZS 4254 (0.55 to 0.95 mm wall): reception, retail front, office, staff amenity, lunch room, dog training school, doggy daycare supply, pet retail dry goods floor, kennel block supply, cattery supply, isolation room supply, grooming salon supply, all supply ducts in clinical and animal zones upstream of the room boundary. SBKJ supplies galvanised coil capability on the SBAL-V auto duct line as the standard configuration.
- Stainless 304 (0.55 to 1.2 mm wall): kennel block extract, cattery extract, cat isolation room extract, dog isolation room extract, grooming salon bath area extract, dryer table extract, self-serve dog wash booth extract (first 3 m), doggy daycare extract, dog training school extract, pet retail aquarium hall extract, pet retail reptile and small mammal extract, chemical store extract, laundry dryer extract, pet crematorium retort room extract (first 3 m), pet crematorium ash processing extract. Resistant to ammonia, quaternary ammonium disinfectant, peracetic acid (Virkon S), sodium hypochlorite (bleach), shampoo and conditioner chemistry. SBKJ supplies 304 stainless coil change-over capability on the SBAL-V auto duct line.
- Stainless 304 with welded longitudinal seam (SBKJ SB-ZF1500 stitchwelder): HEPA-bagged plenum on cat and dog isolation room single-pass extract, HEPA-bagged plenum on pet crematorium ash processing extract, any duct section where seam-level leak tightness is critical. The welded seam is what prevents pinhole leakage of contaminated air at the duct-to-plenum joint in single-pass HEPA-bagged extract.
- Spark-resistant tooling (SBAL-V configured for spark-resistant fabrication): pet crematorium retort room duct work, any LPG-fired kitchen if the boarding facility provides one. Spark-resistant tooling is reserved for the small number of pet care projects with on-site cremation or with gas-fired kitchen plant.
- Galvanised externally insulated: general supply ducts in ceiling voids, downdraft table extract in grooming salons, doggy daycare supply, dog training school supply. Externally insulated to mineral wool per AS/NZS 4859 lagged with foil-laminated facing.
External insulation is by mineral wool to AS/NZS 4859 lagged with foil-laminated facing, sized for the supply air temperature relative to the ceiling-void ambient. Internal acoustic lining is acceptable in reception, retail front, office and staff zones only — never in kennel block, cattery, isolation, grooming bath, dryer extract, dog wash booth, daycare, training school, aquarium hall, reptile, chemical store, laundry, crematorium or wash bay ducts because biological deep-cleaning will not reach internal lining.
The Australian pet care landscape — operators and their specifications
The Australian pet care market is consolidated at the top end and fragmented at the bottom. The fabricator serving the industry sees a mix of corporate-chain fit-outs, independent operator refits and specialist boarding-grooming-daycare campus builds across the year. Knowing the players helps to position a fabricator's offering correctly.
Pet boarding chains. Hanrob Pet Hotels is the largest by sites in Australia, operating premium boarding facilities in Sydney, Melbourne, Brisbane, Gold Coast, Sunshine Coast and Perth, acquired into the Mantra Group portfolio. The Hanrob brand specification is consistent across sites and once a fabricator has learned the brief, repeat work flows. Pet Resort operates premium boarding in Sydney and Melbourne with an emphasis on the boutique-hotel experience. Pawsome Resort operates in Sydney. Petbarn Pet Resort is the Greencross Pet Wellness boarding offer co-located with the Petbarn retail brand. Adelaide Pet Resort is the regional leader in South Australia. Spend Some Time at the Beach in Coffs Harbour, NSW is a regional north-coast operator with a strong holiday-boarding clientele.
Doggy daycare. Camp Out for Dogs operates a Sydney chain of daycare locations. Doggie Day Spa is a metropolitan operator. Dogue is the Brisbane-area daycare and grooming combination. Camp Bow Wow Australia is the Australian arm of the US-origin franchise, expanding through major metropolitan markets.
Grooming chains. Bagsters operates in Sydney with a salon-grooming model. PetStock Grooming and Petbarn Grooming (Greencross) operate the retail-attached grooming model at scale across the country. Mobile groomers — Hairy Maclary's, Mobile Dog Wash, Aussie Pooch Mobile — operate van-based grooming that runs on different HVAC principles (van ventilation is outside the scope of this guide but the principles of fur capture, dryer extract and chemical containment translate directly).
Pet retail superstores. Petbarn is the largest by site count at 240+ stores nationally, owned by Greencross. PetStock at 200+ stores is the second-largest, acquired by Woolworths in recent years. My Pet Warehouse, City Farmers in Western Australia, PetO in Sydney and Pet Magazine round out the major retail players. Each of the major retail chains publishes an internal facility brief or engineering specification that references AS 1668.2, AS/NZS 4254, BCA Class 7b warehouse retail classification (or Class 6 for the larger superstores with assembly characteristics), MERV 13 minimum filtration on the retail floor and a higher specification on the live-animal section, grooming bay and self-serve wash booth.
Veterinary chains (overlap with pet care). Greencross Vets at 170+ clinics is the largest, owned by Petbarn parent Greencross Pet Wellness — and the Greencross-Petbarn co-located model is one of the most common pet-care HVAC briefs in metropolitan Australia. VetPartners is the corporate vet chain consolidator. Apiam Animal Health (ASX:AHX) operates a large-and-companion animal practice network. National Veterinary Care is a Greencross subsidiary. Vetwest is the dominant WA chain.
Greyhound racing kennels. Greyhound Racing NSW (GRNSW), Greyhound Racing Victoria (GRV), the Queensland Racing Industry, Racing & Wagering WA, Greyhound Racing SA and Tasracing each set facility standards for racing kennel operators. The greyhound kennel program is a specialist sub-category of the dog kennel brief with additional welfare-and-training infrastructure (training tracks, schooling kennels, race-day holding kennels) but the underlying ventilation framework is the same as the boarding kennel discussed in this guide.
Pet crematorium operators. Pet Cremation Australia (PCA), Pets in Peace, Companions Forever and Lawnswood Memorial Park are the four leading operators with the longest tail of regional smaller providers. Each operates a small number of crematorium facilities and outsources collection from the veterinary and boarding sector. Where a pet boarding facility or grooming salon includes on-site cremation, the HVAC scope is as described above.
Industry bodies. The Pet Industry Association of Australia (PIAA) is the peak body and operates the voluntary accreditation programme that is the de facto industry benchmark. The Pet Welfare Foundation publishes welfare research and guidance. The Australian Veterinary Association (AVA) is the veterinary professional body and publishes a pet-sector guidance document periodically. Greyhound Australasia is the peak body for the greyhound racing industry. The Cat Genetic Defects Network is the cat-breeding genetic-welfare body. The Australian National Kennel Council (ANKC) is the dog-breeding peak body. The Pet Care Industry Council (PCIC) is the cross-industry peak body for pet care services.
Commissioning a pet care HVAC system
Commissioning is the closure step on every pet care fit-out and the step on which PIAA accreditation, state DPI inspector approval, local council compliance and the operator's confidence all depend. The commissioning protocol covers air change, pressure regime, temperature stability, ammonia measurement, allergen consideration, acoustic measurement and duct leakage.
- Air change verification. Calibrated balometer at every supply and extract diffuser in every room. Record the design rate, the measured rate and the tolerance (typically ±10 percent of design). Repeat the test annually. Particular attention to the kennel block at 20 to 30 ACH and the cattery at 12 to 15 ACH; these are the rooms most often under-supplied in fit-out.
- Pressure regime verification. Digital manometer at every door between zones of different pressure. Record the differential, the design target and the door state (open and closed). Particular attention to the isolation rooms at minus 5 to minus 10 pascals and to the reception at plus 5 pascals relative to the kennel block and cattery. Repeat quarterly on the isolation rooms, annually elsewhere.
- Temperature and humidity stability. 7-day temperature and humidity log in every animal-occupied room. Record the setpoint, the achieved range and any deviations. Repeat annually. Cattery target 21 to 24, kennel block 18 to 22, isolation 22 to 24, doggy daycare 20 to 22, grooming salon 20 to 22.
- Ammonia measurement. Real-time ammonia monitor at floor level in the kennel block during a representative occupied period. Record the peak and time-weighted concentration against the Safe Work Australia WES of 25 ppm STEL and 17 ppm TWA. Repeat semi-annually or after any change to the cleaning protocol or the dog stocking density.
- CO2 measurement. Real-time CO2 monitor in the kennel block, cattery and doggy daycare during a representative occupied period. Record peak concentration against the WES of 5,000 ppm TWA. CO2 is a useful proxy for ventilation effectiveness in any animal-occupied space.
- Allergen consideration. No national WES has been set for Fel d 1 or Can f 1 and direct allergen measurement is not routinely performed. The PIAA accreditation criteria require a documented allergen-management plan that includes ventilation, surface cleaning, PPE for staff and customer education.
- Acoustic measurement. Sound-level meter at every customer-facing position (reception desk, viewing window, consult-and-check-in area) and at the operator working position in each clinical-or-grooming room. Record the NC level achieved against the design target. Repeat after any duct or AHU change.
- Duct leakage test. SMACNA seal class A leakage test (pressurise the duct section to 500 Pa, measure the leakage rate) at every shop-fabricated section and at every site-installed joint. Particular attention to the isolation room single-pass extract, the cattery extract and the kennel block extract — leakage on these paths puts contaminated air into the ceiling void and undermines the entire pressure cascade.
- Fire damper drop test. AS 1851 drop test of every fire damper, recorded on the building's essential safety measures certificate. Repeat annually.
The commissioning package — a bound report with all eight test results, the as-built drawings, the AHU sequence-of-operations and the maintenance schedule — is the document the PIAA auditor reads, the DPI inspector references and the facility operator files with the lease. Skipping it costs the operator the accreditation and costs the fabricator the next referral.
Why SBKJ machines are the correct line for pet care fabrication
The pet care HVAC duct fabricator delivers a mixed material brief: 70 to 80 percent galvanised by linear metre (for supply across the facility and for return in the non-clinical zones) and 20 to 30 percent stainless 304 (for extract on the kennel block, cattery, isolation, grooming bath, dryer, dog wash booth, daycare, training, aquarium, reptile, chemical store, laundry, crematorium and ash processing). The machine line that serves this brief efficiently has six elements.
- SBAL-V auto duct production line. Coil-fed, decoils through level-and-shear, notches and folds the duct blank, closes the Pittsburgh longitudinal seam and delivers a finished rectangular duct section in one pass. Configured for galvanised coil 0.5 to 1.2 mm with a 304 stainless coil change-over module that supports the stainless wall-thickness range. The SBAL-V is the workhorse on every pet care fit-out — its U-shape automatic configuration delivers TDF flange, angle flange and drive cleat from the same line and accommodates the mixed material brief in a single machine setup. Single-shift output 100 to 140 m of finished rectangular duct per shift. See the SBAL-V product page for the full specification, the model range and the certifications.
- SB-ZF1500 stitchwelder. Produces the welded longitudinal seam on the stainless plenum for HEPA-bagged isolation room extract, ash processing extract and any duct section where seam-level leak tightness is critical. The stitchwelder operates on 1.0 to 1.5 mm stainless wall and produces a fully welded longitudinal seam suitable for seal class A construction at the leak rates implied by HEPA-bagged single-pass extract. The stitchwelder is the machine that turns a stainless duct into a containment-grade plenum.
- SBSF-1525 flanging line. Rolls TDF flange (transverse duct flange) and angle-flange terminations onto the duct end at 4 mm and 5 mm flange depths typical of pet care supply and extract pressure classes. The TDF flange is the dominant connection in Australian pet care fit-outs because it is faster on site than a hand-bolted angle, and the air-leakage rate at SMACNA seal class A is achievable with a properly-rolled TDF and a foam gasket.
- SBFB-1500 spiral former. Spiral-locks round duct from 80 mm to 1,500 mm diameter from galvanised or stainless coil. Multi-storey pet care campuses with a kennel block on the ground floor and a cattery on the upper floor use round duct on the return riser because the spiral lock seam is more cleanable than a Pittsburgh seam on rectangular and the round profile fits cleanly through the floor penetration. The 80 to 800 mm range covers almost all round duct in a community pet care fit-out; the 800 to 1,500 mm range covers riser duct in larger campuses.
- SBPC1500 plasma cutter. CNC plasma cutting for stainless transitions, take-offs, irregular fittings and the bespoke duct sections that every pet care fit-out requires (the grooming downdraft table connection, the dryer extract hood, the bath area extract grille blank, the isolation room HEPA-bagged plenum end cap). The SBPC1500 cuts up to 25 mm carbon steel and up to 12 mm stainless on a 1,500 mm by 3,000 mm bed. Stainless cutting on a plasma cutter requires nitrogen rather than compressed air as the cutting gas — the SBKJ plasma is configured for both gases.
- SBLR-600 laser welder. Handheld fibre laser welding for stainless fittings, transitions and bespoke fabrication. The SBLR-600 produces a clean weld bead on 0.5 to 6 mm stainless without the heat distortion of traditional TIG welding, and is the appropriate machine for the final fit-and-finish on the isolation room HEPA-bagged plenum, the bath area extract grille, the dryer extract hood and the pet crematorium retort connection. The handheld format gives the fabricator the flexibility to weld at the fabrication shop and on site for any final fit-up.
Optional add-ons that improve the fabricator's competitiveness on pet care tenders: spark-resistant tooling on the SBAL-V for the pet crematorium retort connection and the LPG-fired kitchen (if the boarding facility includes one); a TIG longitudinal seam-welding station as an alternative to the SB-ZF1500 stitchwelder where the fabricator prefers a TIG finish on stainless; an automated insulation feeder for externally-insulated galvanised supply duct (saves 20 to 30 percent of the labour budget on a fit-out).
The line accepts coil from local Australian steel merchants on either Pittsburgh seam (SBAL-V) or spiral lock (SBFB-1500), and produces ductwork to SMACNA seal class A, AS/NZS 4254 construction class A, and the leakage rates implied by AS 1668.2 ventilation regimes. The output is suitable for PIAA accreditation, for the corporate-chain specifications used by Hanrob, Pet Resort, Greencross-Petbarn, PetStock, Camp Out for Dogs and Bagsters, and for the state-level Greyhound Racing kennel specifications. See the SBKJ machines overview for the full machine catalogue and the galvanised versus stainless steel duct guide for the material decision framework.
Adjacent guides — where the pet care brief overlaps with neighbouring sectors
The pet care HVAC discipline overlaps in places with the veterinary, the childcare and the funeral-and-cremation HVAC briefs. For projects that combine multiple briefs, the following guides should be read alongside this one:
Each of the above guides applies in its specific room scope; the pet care discipline as covered in this guide applies in the kennel, cattery, daycare, grooming, training, retail and crematorium room programs.
How SBKJ supports pet care HVAC fabricators
SBKJ Group serves the Australian pet care HVAC ductwork market through three channels operating from our Box Hill North, Victoria office:
- Machine supply. SBAL-V auto duct line, SB-ZF1500 stitchwelder, SBSF-1525 flanging line, SBFB-1500 spiral former, SBPC1500 plasma cutter, SBLR-600 laser welder, with stainless-coil optionality where the fabricator's order book includes cattery, isolation, grooming bath and crematorium work. Standard 30/70 commercial terms, CE marked, ISO 9001 audited, with Australian after-sales support from our Box Hill North office. See the machines page for the full catalogue.
- Engineering consultation. Our engineering team reviews the fabricator's room schedule for any pet care project and confirms the material specification, the seam type and the line setup required. Free, with no expectation of order. The cost to us is one engineer hour; the value to the fabricator is avoiding a stainless coil change-over on a deadline.
- Reference projects. We supply reference cases from our installed base of pet care, veterinary and health-care HVAC fabricators. The case studies cover the room program, the air-change targets, the duct material decisions and the as-built outcomes. Available on request from our About page, and on the case-studies index for the specific projects.
The strategic position SBKJ holds in the pet care HVAC market is straightforward: we are the machine supplier that already knows the brief. Whether the project is a Hanrob Pet Hotels roll-out, a Pet Resort campus build, a Greencross-Petbarn co-located fit-out, a Bagsters grooming salon, a Camp Out for Dogs conversion, a Pet Cremation Australia branch expansion or a regional GP boarding refit, the duct fabricator on each project is running a SBAL-V or its equivalent — and we have already published the room-by-room reference (this guide) and know which seam type, coil specification and line setup produces the output efficiently. We are not the cheapest machine supplier in the market. We are the supplier where the engineering brief is part of the delivery.
Discuss your pet care duct line with an SBKJ engineer →
FAQ
What air change rate applies to a dog boarding kennel?
A dog kennel block runs at 20 to 30 ACH with 100 percent outside air on the exhaust path. The driver is the combined load of ammonia from urine, CO2 from continuous barking, sensible heat at 200 to 300 W per dog, odour, dust, dander and allergen Can f 1. Supply diffusers at high level along the corridor wall; dedicated low-level extract grilles along the run frontage at floor level; exhaust riser discharges at least 3 m above the roof line and 7.5 m clear of any building intake.
How do I separate cattery air from canine air?
The cattery must be on a dedicated AHU with its own supply and extract risers, never shared with the dog kennel block. Cats are stressed by canine pheromones and feline upper-respiratory pathogens spread efficiently in shared ductwork. Cattery runs at 12 to 15 ACH, 21 to 24 degrees Celsius, NC-35 acoustic.
What pressure regime applies to a cat or dog isolation room?
Minus 5 to minus 10 Pa relative to corridor, 15 to 20 ACH, HEPA H13 single-pass extract that never recirculates. Sealed self-closing door, internal hand-wash basin, PPE station immediately outside, visual flag indicator inside the room confirming negative pressure.
How is ammonia controlled in an Australian boarding kennel?
By a combination of 20 to 30 ACH ventilation with 100 percent outside air, dedicated low-level extract at floor level capturing ammonia at the point of generation, and routine cleaning protocols that remove urine within hours. The Safe Work Australia WES is 25 ppm STEL and 17 ppm TWA.
What ductwork material applies to a dog grooming salon?
Galvanised steel to AS/NZS 4254 for general supply and the office and reception. 304 stainless on the bath area exhaust, dryer table extract, chemical store extract and any isolation room HEPA-bagged extract path. SBKJ supplies both materials on the SBAL-V line.
What allergens are present in pet care facilities and how are they controlled?
Fel d 1 (cat) and Can f 1 (dog) are the dominant occupational allergens. Control is by ventilation at 12 to 15 ACH on cattery and 20 to 30 ACH on kennel block with HEPA H10 or H13 supply filtration, by complete segregation of cattery from canine airflow paths, by routine wet cleaning and by P2 respirator PPE for staff entering the cattery or working long shifts in the kennel block.
What Australian standards and codes apply to a pet boarding fit-out?
AS 1668.2 ventilation, AS/NZS 4254 ductwork, AS 1530.4 fire-rated construction, AS 1851 fire damper maintenance, AS 4801 OHS, ASHRAE Applications Handbook Chapter 11 (Animal Facilities), AS/NZS 2243.3 microbiology (light reference), state animal welfare legislation, the Australian Animal Welfare Standards code of practice for boarding establishments and PIAA accreditation criteria.
What SBKJ machines suit a pet care HVAC duct fabricator?
SBAL-V auto duct line for galvanised plus 304 stainless coil, SB-ZF1500 stitchwelder for stainless plenum on isolation room and ash processing extract, SBSF-1525 flanging line for TDF and angle terminations, SBFB-1500 spiral former for round riser duct, SBPC1500 plasma cutter for stainless transitions, SBLR-600 laser welder for stainless fittings. Spark-resistant tooling on request for pet crematorium retort and LPG kitchen.
