How Often a Nepean Kitchen Hood Needs Cleaning
NFPA 96 sets inspection frequency by cooking volume and fuel type, not by the calendar and not by how the stainless looks from the pass. Four bands cover every commercial kitchen: monthly for solid-fuel cooking, quarterly for high-volume operations, semi-annually for moderate volume, and annually for low volume. This page maps each band onto the kitchen types actually operating in Nepean, Barrhaven, Bells Corners and Manotick. Last updated: August 2026.
The four inspection bands, mapped to real kitchens
Inspection is the trigger. Cleaning follows wherever the deposit has reached the limit, which on a correctly set interval it usually has.
| Band | Interval | Nepean kitchens that land here |
|---|---|---|
| Solid fuel | Monthly | Wood-fired ovens and charcoal grills. Rare here, but the interval is the shortest in the standard because solid fuel produces creosote as well as grease. |
| High volume | Quarterly | Busy independent restaurants on Merivale Road, Robertson Road and Strandherd Drive running fryers and charbroilers most of the day, plus quick-service locations with continuous fryer duty. |
| Moderate volume | Semi-annually | Neighbourhood restaurants and pubs, arena and community centre kitchens, club kitchens busy on event nights, and campus food service running an academic calendar. |
| Low volume | Annually | Cafes with limited cooking, seasonal snack bars, care-home kitchens using mostly steam and convection, and the weekday-lunch staff cafeterias in the Colonnade Road and Moodie Drive business parks. |
Where a band is genuinely ambiguous, the honest answer is to inspect at the shorter interval once and let the deposit decide. A system that is barely loaded after six months moves to annual with evidence behind the decision.
Quarterly vs annual: which one a Nepean kitchen actually needs
The gap between these two bands is where most operators guess, and guessing low is what produces a failed inspection.
| Signal | Points to quarterly | Quarterly vs annual |
|---|---|---|
| Main appliances | Deep fryers, charbroilers, woks, flat-tops running most of the day. | Annual suits convection ovens, steamers and light grill use. |
| Service pattern | Lunch and dinner, seven days. | Annual suits weekday lunch only, or a seasonal operation. |
| Filters between visits | Visibly loaded within weeks, with grease cups filling fast. | Annual kitchens have filters that stay serviceable for months. |
| Drips and odour | Grease marking the canopy face or the wall behind the line. | Annual kitchens rarely show either between visits. |
| Who is asking | A franchisor or an insurer specifying a frequency in writing. | Annual is usually the operator judging their own volume, which is where the interval slips. |
Pricing does not change with the band: from $385 per visit single-hood, from $725 per visit multi-hood. The annual cost changes, which is the whole point of setting the interval correctly. The cost guide covers the rest.
Five signs the interval is wrong
Any one of these means the schedule needs revisiting before the next inspection does it for you.
- Grease running down the canopy face. The trough or cups are overflowing, which means the filters have been shedding faster than the schedule allows for weeks.
- The kitchen feels hotter and smokier. A loaded fan and duct move less air, so the line notices before anyone looks at a filter.
- Filters that will not come clean. Deposit that has baked hard on a filter is a good proxy for what the plenum behind it looks like.
- A stain spreading on the roof. Grease escaping around the fan curb is both a fire issue and a membrane repair the landlord will eventually bill for.
- The last certificate is more than a year old. Whatever the band, that is the document an Ottawa Fire Services inspector will ask to see first.
What each of those actually requires is set out on the hood cleaning and kitchen exhaust cleaning pages, and the code background sits on the NFPA 96 guide.
Frequency questions
How often should a commercial kitchen hood be cleaned?
NFPA 96 puts solid-fuel cooking on a monthly inspection, high-volume kitchens quarterly, moderate-volume kitchens semi-annually and low-volume kitchens annually. Most independent restaurants in Nepean running a fryer and a charbroiler sit in the quarterly or semi-annual band, and cafes and weekday staff cafeterias sit in the annual band.
Does the schedule change in winter?
The interval does not, but rooftop work sometimes has to move. Fan cleaning on an iced or snow-covered roof is a safety call, so where access is unsafe the hood and duct are cleaned on schedule, the fan is booked for the next safe window, and the certificate records exactly what was and was not done rather than implying full coverage.
Can staff cleaning stretch the interval?
It genuinely helps, and it does not replace the schedule. Wiping the canopy exterior and emptying grease cups slows visible loading, but nobody on a shift is reaching the plenum behind the filter bank or the inside of a duct riser. The interval is set on what accumulates where staff cannot reach.
What if a kitchen has never been cleaned at all?
Book the first clean as a full exhaust clean rather than a hood visit, because on a neglected system the riser and fan carry the load that matters. That first visit takes longer and costs more than the ones after it. From there the band is set on the evidence found in the system, which is a far better basis than a guess.