Process & access
You almost never need to lose a trading day. The clean is timed around your service - overnight or between sessions - with the system isolated so the work is done safely while you are closed.
The short answer
The worry that a duct clean means shutting the kitchen for a day is understandable, but it is rarely the reality. The great majority of kitchen extract cleans are scheduled around trading - overnight, early morning or between sessions - so the work happens while you are closed and you open as normal. What you cannot do is clean the system while the cookline is running, because the extract has to be off and cool for the work to be safe. The skill is in the timing, not in closing you down.
Why the system has to be off
A duct clean involves opening the system, working with degreasing chemicals, running brush machines and often working at height on the roof fan. None of that can be done safely over live cooking equipment with hot surfaces and a running fan. So before the clean, the extract system is isolated - switched off and made safe - and given time to cool. That is a practical safety requirement, not an inconvenience invented to make you close.
This is exactly why out-of-hours scheduling suits duct cleaning so well. When the kitchen is closed for the night, the equipment is already cooling and the extract can be safely isolated, giving the crew a clear, cold system to work on. By the time you reopen, the system is back in service and certified - so the only sign of the clean is the paperwork and a system that draws properly again.
Working around a busy site
On larger or multi-outlet sites, the clean can be phased so that parts of the operation keep running while sections are cleaned in turn, or done across more than one overnight visit. The system, or the section being worked on, is isolated while the rest stays available. This is planned from the survey, which maps how the ductwork is arranged and where it can sensibly be split for cleaning without stopping the whole kitchen.
There is also a tidy handover to think about. A professional crew protects work surfaces, contains the debris under negative pressure into HEPA-filtered vacuums rather than letting it spread, and leaves the kitchen ready for service - not covered in grease and dust. The combination of out-of-hours timing, section isolation and clean working is what lets a full, compliant clean happen without you ever hanging a 'closed' sign in daylight.
A full clean and an open kitchen are not a trade-off
Because the extract only has to be off during the clean itself, timing the work out of hours lets you have both a fully cleaned system and an uninterrupted service. The survey plans how and when the system can be isolated and phased, so the clean fits around your trading rather than across it.
Questions
Almost never. Cleans are scheduled around your service - overnight, early morning or between sessions - so the work is done while you are closed and you open as normal.
Because the extract has to be off and cool for the work to be safe. Cleaning involves opening the system, using chemicals, running brush machines and often working at height, none of which is safe over live equipment.
The clean can be phased, with sections isolated and cleaned in turn or across more than one overnight visit, so parts of the operation keep running while the rest is cleaned.
No. A professional crew protects surfaces and contains debris under negative pressure into HEPA-filtered vacuums, leaving the kitchen ready for service rather than covered in grease and dust.
From the survey. It maps how the ductwork is arranged and where it can be isolated or split, so the clean can be timed and phased around your trading.
Phoenix Duct Clean · by the numbers
We schedule around your service - overnight or between sessions - and isolate the system so it is cleaned safely and fully without closing the kitchen.