· Expert Exhaust Cleaning · Compliance · 6 min read
Kitchen Exhaust Cleaning and Your Insurance Policy: What’s Required
Most hospitality policies quietly require documented exhaust cleaning, and a missing certificate can void a fire claim — here’s exactly what your insurer expects and how to prove it.
Most commercial hospitality insurance policies in Australia require documented kitchen exhaust cleaning at a stated interval, and a missing or lapsed record can reduce or void a fire claim. Insurers reference AS 1851, the Australian Standard for routine service of fire protection systems, and expect dated certificates, before-and-after photographs, and grease-depth measurements as evidence. Kitchen exhaust cleaning insurance compliance is a condition of cover, not an optional extra — the payout you are relying on depends on it.
Grease is the fuel that makes a kitchen fire spread, so insurers treat exhaust maintenance the way they treat a sprinkler system: a fire-protection control they price the policy around. When that control is unproven, the risk they underwrote no longer matches reality, and that gap is what they use to contest a claim.
Does your insurance policy require kitchen exhaust cleaning?
Almost certainly. There is no standalone NSW law setting a universal interval, but most commercial property, fire and business-interruption policies carry a maintenance or fire-safety condition that captures the exhaust system. The obligation reaches you in three ways, and usually more than one applies:
- The policy wording — a general condition to keep fire-protection equipment in working order, which includes the exhaust and its ductwork.
- A specific exhaust-cleaning endorsement — many hospitality insurers name an interval (commonly every 3 to 6 months) and demand written proof.
- Your lease — landlords and shopping centres require documented tenancy exhaust cleaning, and breaching the lease can also breach the policy.
Read your Product Disclosure Statement and schedule. If either mentions exhaust, extraction, or fire-protection maintenance, cleaning records are already a condition of your cover.
What does kitchen exhaust cleaning insurance actually require?
It requires evidence that the work happened and met a standard, not just an invoice showing you paid. An invoice proves payment; it does not prove grease was removed to bare metal or measured against a safe threshold. After every service you should hold the records below.
| Document | What it proves | Why the insurer wants it |
|---|---|---|
| Dated compliance certificate | The specific system was serviced on a known date | Confirms the interval was met when the loss occurred |
| Before-and-after photographs | Grease was removed at each access point | Shows the clean was real, not a paper exercise |
| Grease-depth measurements | The deposit was below an ignitable thickness | Makes the interval evidence-based, not guessed |
| Written defect report | Faults were identified and closed out | Demonstrates the system was maintained, not just wiped |
| Next-service date | The schedule continues after the visit | Proves ongoing compliance, not a one-off |
Keep these for the life of the policy, because a claim is assessed against the records that existed on the day of the fire — not the ones you scramble to gather afterwards.
What happens to a fire claim without cleaning records?
The insurer can reduce the payout or decline the claim outright, on the grounds that a condition of cover was not met. If grease build-up contributed to the fire — and grease build-up is the leading cause of commercial kitchen fires — an assessor will ask for the cleaning history first, because unmanaged grease is the exact hazard the maintenance condition exists to control.
The exposure is rarely just the kitchen. A single exhaust fire can close a venue for weeks, and a declined claim leaves you carrying the rebuild, the lost trade, and any third-party damage yourself. Documented cleaning is cheap insurance for your insurance.
How often do insurers expect a commercial kitchen exhaust to be cleaned?
Most policies expect cleaning every 3 to 6 months, with high-volume kitchens serviced more often. AS 1851 does not name a single universal interval; it requires a schedule set by inspection and grease accumulation, which is why the right frequency depends on how you cook.
| Kitchen type | Filters | Duct | Why the interval |
|---|---|---|---|
| Charcoal, wok, heavy frying | Monthly | Quarterly | Aerosolises the most oil, so grease loads 3–4× faster |
| Busy restaurant, pub, bistro | Monthly | Every 6 months | Steady grilling and frying deposits grease at a moderate rate |
| Café, light or reheat-only | Monthly | Every 6–12 months | Low grease output stays below an ignitable depth longer |
Matching the interval to your cooking type keeps grease under the roughly 2 mm depth where a duct will sustain fire — which is exactly the outcome your policy is paying for.
Which standards do insurers reference — AS 1851 or AS/NZS 1668.1?
Both, for different reasons. AS 1851 governs the routine service — inspection, cleaning, testing and record-keeping — that produces the certificates an insurer reads. AS/NZS 1668.1 governs the mechanical ventilation design that makes a system cleanable and able to extract heat safely in the first place.
| AS 1851 | AS/NZS 1668.1 | |
|---|---|---|
| Governs | Routine service of fire-protection systems | Design and installation of mechanical ventilation |
| Covers | Inspection, cleaning, testing, record-keeping | Duct sizing, access panels, airflow rates, discharge location |
| Produces | Service certificates and defect reports | Commissioning and compliance documentation |
| Matters to insurers | Proves ongoing maintenance | Proves the system was safe by design |
Cleaning to AS 1851 cannot fix a system that breaches AS/NZS 1668.1 — if there are no access panels, the duct cannot be reached or certified at all. For a fuller breakdown, see the difference between AS/NZS 1668.1 and AS 1851. The same records also help you pass a council kitchen exhaust inspection, because councils and insurers ask for the same evidence.
What does insurer-compliant cleaning cost in Sydney?
A single-canopy clean in Sydney starts from around $390, a full canopy-and-duct clean runs $900 to $2,500, and a multi-storey riser starts at $3,000 and up. Price scales with duct length, number of access points, roof access, and grease load — which is why a shorter interval keeps each visit cheaper and each certificate current.
| Scope | Typical price (AUD) |
|---|---|
| Single canopy, filters and plenum | from ~$390 |
| Canopy plus duct and fan | $900–$2,500 |
| Multi-storey riser and roof plant | $3,000+ |
Set against a declined fire claim, a routine clean is a rounding error — the case for treating it as scheduled maintenance rather than a grudge purchase. Our compliance & safety cleaning service issues the certificate, photographs and measurements your insurer needs, on the interval your policy specifies.
Keep your cover valid before the next renewal
Check your policy schedule for an exhaust-cleaning condition today, then match your cleaning interval to it before your next renewal or claim. Call Expert Exhaust Cleaning on 0468 070 392 or get a same-day quote, and we will inspect your system, clean it to AS 1851, and leave you with the documentation that keeps your cover valid.
