Cost & commercial
Run several kitchens and a single per-site price will mislead you. A busy flagship, a light-use cafe and a hard-access hotel line each carry different systems, hours and grease loads - so a real multi-site budget is built site by site, then made cheaper by a contract.
The short answer
Run several kitchens and a single per-site price will mislead you. A busy flagship, a light-use cafe and a hard-access hotel line each carry different systems, hours and grease loads - so a real multi-site budget is built site by site, then made cheaper by a contract.
The detail
Start from each system, not an average. A compact cafe with a short duct might sit near the £150 to £400 single-canopy band, while a high-output restaurant with a long duct and roof fan runs to the top of the range or beyond. Averaging them hides which sites are cheap and which are quietly expensive.
Then set frequency per site from its hours and cooking. A heavy-use kitchen may need cleaning every three months, a moderate one every six, a light one every twelve. Annual spend is the per-clean cost times the frequency, so two kitchens with the same clean price can have very different yearly figures.
Factor access and location for each. A roof fan, a long riser or a confined plant space raises a site's price regardless of how busy it is, and London sites sit above rural ones. A multi-site portfolio usually has a spread of easy and awkward systems, and the awkward ones drive more of the budget than their size suggests.
Build in the certificate trail at every site. Each kitchen needs its own current certificate for insurance and fire safety, so the budget is not just cleaning - it is documented compliance across the whole estate, with no site allowed to drift out of date because it happened to be quiet. A single lapsed certificate on a forgotten site can undo the compliance of the whole estate in an inspector's eyes, so no kitchen can be left to drift.
What it means for you
A single multi-site contract usually prices better than booking each kitchen separately. The contractor can plan routes, share mobilisation across nearby sites and schedule out-of-hours work in advance, and that planning shows up as a lower per-site figure than ad-hoc one-offs. On a portfolio of several kitchens that saving compounds, because the planning that lowers one site's cost is repeated across every site on the same contract.
It also gives you one compliance picture instead of several. A managed schedule keeps every site's certificate current and flags the awkward or high-grease kitchens that need attention sooner, so nothing slips through the gaps that open up when each manager books their own clean.
Phoenix Duct Clean quotes multi-site portfolios site by site and schedules them together, so the budget reflects each kitchen honestly while the contract keeps the total - and the paperwork - under control.
The service behind the guide
Sibling guides
the cost of a fan seized by grease · why frequency lowers your spend · hotel extraction across multiple outlets
Questions
Not reliably. Sites differ in system size, hours, grease load and access, so a flat per-site figure over-charges the easy kitchens and under-budgets the awkward ones. Price each system, then total them.
Multiply the per-clean cost by the frequency the site needs - roughly four times a year for heavy use, twice for moderate, once for light. Two sites with the same clean price can differ sharply once frequency is applied.
Usually. Planning routes, sharing mobilisation between nearby sites and booking out-of-hours work ahead all lower the per-site cost compared with each kitchen booking its own one-off clean.
A managed schedule keeps each kitchen's certificate current and flags which sites need attention first. It stops quiet sites drifting out of date, which is the usual gap when managers book cleans individually.
Often the high-grease and hard-access ones rather than the biggest. A busy fryer-heavy kitchen or a roof-fan site needs more frequent or more involved cleaning, so those systems shape the total more than floor area does.
Phoenix Duct Clean · by the numbers
Book a multi-site survey and get each system priced honestly on one managed schedule.