The Hood Cleaning Certificate of Performance, Explained

The sticker on the hood is the public face of your compliance: company name and service date, visible at a glance. Inspectors read it first because it tells them what records to ask for next. What it can't do is prove scope — a sticker says somebody was here, not that the duct behind the wall reached bare metal. A sticker from a wipe-down vendor looks identical to one from a crew that cleaned the whole system.

The certificate of performance is the document of record. It carries the detail the sticker can't: what was cleaned, to what condition, what couldn't be reached, and when service is next due. When an inspector, adjuster, or landlord asks for "proof of cleaning," this is the document they mean — and it's what inspectors check the sticker against during a walk-through.

The photo report is the evidence layer underneath both: before/after shots of the hood interior, plenum, duct access points, and fan. Photos answer the question paper can't — did the metal actually come clean — and they're increasingly what separates a certificate that gets a nod from one that gets follow-up questions. The three together form a chain: the sticker points to the certificate, the certificate states the scope, the photos prove it.

It sounds backwards, but the mark of a trustworthy certificate is that it admits what wasn't cleaned. Real exhaust systems have hard sections: duct runs without access panels, vertical risers behind finished walls, fans positioned where safe access needs special arrangement. NFPA 96 anticipates this — the contractor is expected to identify areas that weren't cleaned or couldn't be reached and report them to you in writing, so the owner can decide what to do about them (usually: have access panels installed).

A certificate claiming 100% of the system was cleaned, every visit, with no exceptions noted, is either describing a remarkably convenient duct layout or describing nothing at all. Inspectors know this, which is why a too-perfect certificate invites the flashlight rather than deflecting it.

The disclosure also protects you. If a fire starts in a section the contractor flagged as inaccessible, your records show you were informed and can show what you did about it. If the certificate is silent, that gap becomes your problem at the worst possible moment — in front of an adjuster.

The fire marshal — at routine inspection, the request is records first, flashlight second. The certificate is checked against the sticker date and your required frequency tier; a missing or vague certificate can fail a kitchen whose ducts are actually clean.

Your insurance company — twice. Underwriters can request maintenance records when writing or renewing the policy, and adjusters request them after a loss. The post-fire request is the one that matters most: documentation produced on demand is the difference between a claim that proceeds and one that stalls into investigation.

Your landlord or property manager — most commercial kitchen leases make exhaust maintenance a tenant obligation, and property managers collect certificates as records for property files because the building's own insurance depends on tenants keeping up. Expect requests at renewal, sale, or refinancing, sometimes years after the service date.

Franchise auditors — if you operate under a flag, brand standards audits routinely include exhaust records, and a missing certificate becomes a compliance finding on your franchise file rather than a private paperwork gap.

No scope. "Hood cleaning performed" is an invoice line, not a certificate. If the document doesn't say which components were serviced — hood, filters, plenum, duct, fan — it proves nothing about the parts of the system that actually burn.

No inaccessible-areas note. As above: a certificate that never mentions limitations is describing a fantasy system. Honest contractors document the hard sections; the others pretend they don't exist.

No next-due date. The standard's whole logic is interval-based. A certificate that doesn't state when service is next due disconnects itself from the requirement it's supposed to prove.

The vendor profile. A price dramatically below every other quote, a crew in and out in under an hour, no photos offered, no access panels opened — these describe a wipe-down service, and the certificate it generates is a liability dressed as paperwork. A document claiming bare-metal cleaning that didn't happen is worse than no document: it fails you at inspection and again in front of an adjuster, with your name on the file next to theirs.

Every job we run ends the same way, because the paperwork is part of the service, not an upsell. The crew applies the dated service sticker to the hood, and you receive a certificate of performance stating exactly what was cleaned, the condition it was left in, any areas that couldn't be accessed and why, and your next due date based on your NFPA 96 tier — with a before/after photo report attached so the certificate's claims are verifiable, not just asserted.

That's the package an inspector, adjuster, landlord, or franchise auditor expects to see, formatted to be handed over without explanation. If your current records wouldn't survive that request, the fix is straightforward: book a documented hood cleaning service and start the paper trail from a clean baseline.