A practical maintenance checklist for commercial kitchen hoods
What staff can monitor between visits, and how to keep records.
Cleaning vs. Maintenance: Understanding Your Commercial Kitchen Exhaust System
"Cleaning" and "maintenance" get used interchangeably on service invoices and in conversations, and that blur costs money: systems get one deep clean a year while the in-between work that keeps them serviceable never happens. This article splits the four activities mixed up inside the word "service" and explains how they fit together.
1. Cleaning: removing the grease that has collected
Exhaust cleaning is the deep layer. Components in scope — hood and canopy surfaces, grease filters, accessible fan components and accessible exhaust areas — are cleaned of the grease that cooking operations deposited since the last visit. It is scheduled work, done at an interval that suits the kitchen's volume and cooking style.
One honest caveat: a single cleaning visit covers the components in the confirmed scope. It does not automatically include maintenance for every part of the system.
2. Inspecting: knowing what condition the system is in
An inspection is a look, not a wash. In practice it is a visual check of accessible components — visible grease, damaged or ill-fitting filters, access problems — which is usually part of a cleaning visit. It answers "what does this system look like now?" and it has limits: it does not see inside sealed duct interiors and it is not a compliance certification.
3. Preventive maintenance: the in-between work
Maintenance keeps the system between cleanings from drifting: re-checking accessible components, confirming filters still fit and sit correctly, watching visible condition over time, and adjusting the cleaning interval based on what the visits actually find. It can include follow-up work within a confirmed scope.
4. Repairs: arranged separately
Repairs fix physical faults — damaged components, parts that need replacing, fittings that no longer hold. They are outside a routine cleaning visit. When a cleaning or maintenance provider spots a fault, the usual flow is simple: record it, explain it, and either fix it within the confirmed scope or refer it to the right trade.
Why they complement each other. Cleaning resets the clock, inspections catch what cleaning cannot see, maintenance keeps the interval honest, and repairs address the physical faults that neither cleaning nor maintenance should paper over.
What this means when you book
When comparing quotes, ask which of the four activities is actually included. "Cleaning" that bundles a visual check and follow-up notes is a different product from "cleaning" alone — and a maintenance plan with no cleaning visits in it is a subscription to inspections.
Grease Shields handles hood, canopy, filter and accessible exhaust cleaning and maintenance in St. John's and across the Island of Newfoundland. See the hood cleaning and maintenance service, our hood maintenance checklist for the in-between work, or request a quote.
Requirements that apply to your premises — including any mandated cleaning interval — are set by your authority having jurisdiction.