Ask two kitchen managers when their last hood cleaning was, and you will get two different answers. One may say the contract crew finished in a single afternoon. The other may describe two crews, an overnight soak, and the line shut down the following morning. Both stories can be true. Labor in commercial exhaust hood cleaning is not driven by the hood alone. It is driven by how much of the job happens inside the kitchen, and by what has to be moved, soaked, scrubbed, and dried before the equipment switches to high-fire service.
Comparing labor needs between two quotes therefore means breaking the job into the same stages and looking at where the hours are actually spent.
What drives the labor on a hood cleaning job
A hood, filters, plenum, and duct run are cleaned through the same basic steps in every market. The crew walks up, contains the area below the hood, takes the grease filters down, works the interior surfaces, washes the filters and ancillary parts, removes the grease that has been loosened, and dries and reassembles before the cook line restarts.
Labor clusters around four variables:
- Cleaning access. A rooftop or exterior access door that reaches the duct run means less time inside the kitchen and less staging under the hood.
- Fan and plenum condition. A plenum coated in thick, polymerized grease requires repeated scraping and re-application of product, not one pass.
- How filters and parts get washed. Hand scrubbing in the kitchen takes longer than moving parts to a fixed wash point.
- The kitchen's own schedule. Night work in a live restaurant means the crew works around equipment, and the kitchen needs time to return to service.
Those four variables explain most of the spread between quotes for apparently similar hoods.
A stage-by-stage way to compare two quotes
Write the stages down and ask each bidder for crew count and hours per stage. Then the labor model becomes visible instead of a single line item.
| Stage | Typical labor pattern | What to ask in a quote |
|---|---|---|
| Setup and containment | Plastic down to the cook line, equipment moved, floor protected | Whether staging happens in the kitchen or outside it |
| Filter and part removal | Two people unhooking and carrying filters, dampers, and light fixtures | How many filter sets, and whether parts go to a wash point |
| Interior hood, plenum, and fan face | Scrape, apply, dwell, repeat — the slowest stage | How many applications the crew expects, and how long the dwell runs |
| Duct run | Access points set the pace more than duct length | Number of access doors and where they are cut |
| Wash and rinse | Product and loosened grease must be pulled off surfaces and off parts | Where rinse water goes, and how it is contained and removed |
| Dry, reassemble, restore | Surfaces need to be dry before the burners go back on | Whether the kitchen can open the next morning, and at what cost |
Where the two common methods separate on labor
Most hood cleaning is still done by hand. Crews scrape and spray degreaser, let it dwell, work the surface with pads and scrapers, and rinse. The labor is front-loaded, and it grows quickly with grease build-up. Heavy deposits mean more dwell cycles, not harder scrubbing. If your hood has been cleaned on a long interval, expect that stage to dominate the estimate.
Some operators move the parts instead of cleaning them in place. Filters, dampers, and baffle sections go to a wash tank or fixed steam cleaning machine station in a back bay or off-site facility, while the fixed structure is cleaned with far less manual scrubbing. Labor shifts out of the kitchen and onto a shorter, more repeatable bench task.
A third pattern uses heat and pressure to loosen grease in place, which cuts dwell time and reduces how much of the surface has to be worked by hand. For teams comparing methods, this is where the labor difference becomes concrete: high-temperature, high-pressure steam works polymerized grease off the metal faster than dwell-and-scrub, so the crew spends fewer hours per hood section. In the comparison, restaurant exhaust hood steam cleaning shows up as a shorter interior stage but a bigger equipment and utility setup at the front of the job.
For duct runs, hand cleaning inside the duct is labor-intensive and depends on access. Steam and mechanical methods move the crew between access points instead of along the full duct. Compare the number of access doors each quote plans to use; a quote that plans more access doors is planning more labor in the kitchen and more patch work afterwards.
What to put on the same page when you compare vendors
Normalize the inputs before you compare price, or the comparison is meaningless:
- Linear feet of hood, the number of filters, and whether the plenum and fan are in scope.
- Duct length and the access points the vendor plans to use.
- The cleaning interval in force, and the last service date. Deposits, not dimensions, drive the interior stage.
- Whether filters are washed on site or off site, and how many replacement sets you have on hand.
- Water access, power, and drainage available at the work area — and the vendor's plan to contain and remove rinse water.
- Whether the crew leaves the kitchen usable the same night.
Two vendors given that same sheet will produce comparable hours. Vendors given only the hood length will not.
How interval length changes total labor
The interval you choose is a labor decision as much as a compliance one. Codes and standards that govern cooking exhaust systems put cleaning frequency in the hands of the operator, based on how heavily the kitchen runs; solid-fuel cooking and high-volume charbroiling push toward shorter intervals, while a seasonal or low-volume line can go longer. Verify the requirement that applies at your site with the authority having jurisdiction — don't assume your vendor's schedule is the one your inspector will accept.
Once you have that baseline, compare interval cost the way you would a labor plan. A longer interval means fewer visits, but the per-visit interior stage gets heavier and the risk of missed deposits grows. A shorter interval keeps the interior stage short and predictable. If you are moving to steam on a shorter cycle, a central kitchen hood degreasing routine looks different from an annual scrape-and-spray contract: shorter, more frequent visits with less manual labor per visit.
Equipment you have to supply yourself
If your team does the day-to-day hood face and filter work in house and only contracts the duct, you own a different labor question: what the crew needs on hand to keep the surfaces manageable between visits. A unit that switches between dry and wet steam lets you soften grease on the visible hood, the filters you pull, and the cook line around the hood without pulling the whole system out of service. That is where a machine such as the Fixed Steam Cleaning Machine PowerDe HW02 sits in a comparison: 220 V fixed equipment with dry and wet steam and a vacuum function, listed by the manufacturer at 6 kW heating power with a 160 °C steam temperature and 0.8 MPa vapor pressure. Treat those published figures as the manufacturer's stated specification and confirm the configuration you would actually buy.
Compare the labor of that model honestly. The machine cuts scrubbing time and shortens the dwell loop on surfaces your crew can reach. It does not replace the qualified inspection and cleaning of the duct and fan that your code requires, and it adds setup time on power, water, and drainage before the crew starts. Ask a vendor for the crew-hours they expect for your hood with and without steam, and see whether the difference holds up against your real interval and real grease load.
A short checklist before you sign
- Both quotes broken into the six stages above, with crew count and hours per stage.
- Scope in writing: hood, plenum, fan, filters, dampers, and the duct length actually cleaned.
- Water, power, and drainage responsibilities split between you and the vendor.
- Access doors: who cuts them, who patches them, and how many are planned.
- Documentation you receive after the job, and who signs it.
- Your in-house routine between visits, with the equipment assigned to it.
Compare labor at the stage level, confirm the interval your site is actually required to meet, and be explicit about who supplies the equipment and utilities. That is how two very different hood cleaning proposals become a fair comparison.
