Cost & commercial
In 2026 a single-canopy restaurant clean commonly runs about £150 to £400, a full certified system more often lands around £300 to £600, and larger multi-kitchen sites reach £750 to £5,000 or more. Size, grease load and access set where you sit.
The short answer
In 2026 a single-canopy restaurant clean commonly runs about £150 to £400, a full certified system more often lands around £300 to £600, and larger multi-kitchen sites reach £750 to £5,000 or more. Size, grease load and access set where you sit.
The detail
The single biggest driver is the size and length of the system. A compact cafe with a short duct run and a wall-mounted fan is a fast job; a restaurant with a long horizontal duct, a riser and a roof fan is several times the labour. Price tracks the metres of ductwork and the number of access points that must be opened, cleaned and closed.
Grease load matters next. A system cleaned on schedule needs a routine degrease; one left until it drips or fails needs heavier mechanical work, sometimes over more than one visit. Neglect does not save money - it moves the cost into a bigger job later, and a spot reading of 500 microns or more calls for immediate localised cleaning regardless of the diary.
Access is the quiet multiplier. Roof-mounted fans, high-level duct and confined spaces bring working-at-height and confined-space measures that add time and cost. TR19 Grease expects inspection panels roughly every two metres; where they are missing, fitting them is extra but it is what makes a compliant clean possible at all.
Region and timing move the figure too. London and the South East sit at the top of the range, and overnight or out-of-hours work to avoid closing during service carries a premium. A quote is really a read of your specific system, not a menu price, which is why any honest figure comes after a look at the kitchen.
What it means for you
Treat a headline price with no site view as a rough guide only. The £150 to £400 single-canopy band and the £300 to £600 full-system band are useful anchors, but the real number depends on your duct length, grease load and access - and on whether a compliant certificate is included or quietly left out.
A believable quote names the scope: canopy, filters, plenum, the full duct run, the fan, and a TR19 Grease certificate with before and after photographs and micron readings. A price that is dramatically lower than the rest is usually cleaning less of the system, and the gap tends to reappear as fire risk and a failed inspection.
Phoenix Duct Clean quotes from what the system needs, cleans canopy to fan back below the verification threshold, and documents it so the figure you pay buys provable compliance - not just a tidier canopy edge.
The service behind the guide
Sibling guides
why quotes vary so much · canopy-only vs full system · how often a system should be cleaned
Questions
As a guide, a single-canopy restaurant clean is often £150 to £400, a full certified system around £300 to £600, and larger multi-kitchen sites £750 to £5,000 or more. The exact figure depends on system size, grease load and access, so a firm price follows a short site view.
Because the cost is set by your duct length, the number of access points, the grease load and how the fan is mounted - none of which are visible on a call. A quick survey lets a contractor quote accurately rather than padding the figure to cover the unknowns.
It should be. A compliant clean includes a TR19 Grease certificate with before and after photographs and micron readings. If a quote is unusually cheap, check whether the certificate and the full duct run are actually in scope.
Generally yes. London and the South East sit at the higher end of the range, and out-of-hours work to avoid closing during service adds a premium. A rural or off-peak booking often comes in lower for the same system.
Over the long run, yes. Regular cleaning keeps the job to a routine degrease rather than heavy remedial work, and it avoids emergency call-outs and the cost of a grease-damaged fan. Frequency is the cheapest lever you control.
Phoenix Duct Clean · by the numbers
Book a short site view and get an accurate extraction cleaning quote, not a phone guess.