Greater London · Extract fan cleaning
Extract fan cleaning in Coldblow, Greater London
Extract fan cleaning across Coldblow and nearby, booked around your opening hours and finished with a written report and pictures.
- Rough running from the extract fan
- Fat spreading onto the roof or wall by the fan
- A heavily greased fan housing
How we handle extract fan cleaning in Coldblow
Kitchen extract fans come in different forms: roof-mounted units, inline fans within the duct, and wall fans. Each is isolated and opened in its own way and the survey shows us how to reach it. The work covers centrifugal fans, roof-mounted fans and fan housings, and people most often call us about rough running from the extract fan and grease stains around the discharge.
London kitchens tend to trade late and open early, so extract cleaning in Coldblow is normally done overnight, after the last service. Before the clean, we agree loading, parking and roof access with whoever manages the building.
Accreditations are easy to claim and worth checking. We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
- Location
- Coldblow (DA5)
- Region
- Greater London
- Paperwork
- Certificate and photo report
- Quotes
- A fixed price before we start
- Hours
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
Coldblow: your questions answered
Can parking be tricky for a job in Coldblow?
Tell us where a van can stop near your site in Coldblow, and about any building rules on loading. If the building has a loading slot system, we will book into it.
Do you work overnight in Coldblow?
Yes. We work evenings, overnight and at weekends. It means the site in Coldblow keeps running as normal. Let us know the hours you are closed and we will book within them.
How far ahead should we book?
That depends on the slot you want and the size of the job. Tell us your preferred dates when you ask for a quote, and for anything urgent, ring our 24/7 emergency line.
Is it safe to clean the fan while the kitchen is open?
We always isolate the fan first, so it can’t run during the clean. With the extract off, the kitchen cannot cook, so we work out of hours.
Can you come out in an emergency?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line, and we will advise on what to do next.
Can you fix a fan that’s worn out?
A fan that needs repair is noted on the report, with what we found. We can repair or replace it, and if it fails outright, our 24/7 emergency line is there.
What do you do with what you remove?
We contain it and take it with us. Grease, debris and waste water are collected as the work goes on, so it does not spread.
Which accreditations do you hold?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
When to call us in Coldblow
Fans that are hard to reach are often the ones that get missed. A fan that has never been cleaned can be heavily coated, and the report will show it.
If you notice any of these, it’s worth a diagnosis:
- A fan that no longer moves enough air
- A motor area thick with grease
- Hot, greasy smells near the fan
- A fan that has never been cleaned
Healthcare kitchens cannot easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Coldblow is Bexley Hospital, about 1.9 miles north-west.
What to look for in a quote
- Whether a written report and pictures are included
- How areas they can’t reach will be recorded
- Exactly which parts of the system are covered
- If the quote is a fixed price or an estimate
How the job changes from site to site
Wall fans
Wall fans often have a short duct, so grease reaches them quickly. They can need regular attention, which grease readings will show.
Impellers and blades
The blades of the impeller do the work, and grease builds up on them unevenly. An uneven coating throws it off balance, so it’s cleaned carefully blade by blade.
Landlords, agents and facilities managers
We regularly work with managing agents. Send the address, what’s needed and how access works and we’ll come back with a fixed quote.
We work for landlords, managing agents and facilities managers as well as the people running the site. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
Staff cleaning versus specialist work
Keep a record of what your team does. A dated log of in-house cleaning and checks shows an inspector that the system is looked after between visits, next to our reports.
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease need training, the right equipment and safe access. That’s our job.
What happens on the day
Everything the job needs comes with us, from protective sheeting to tools and access equipment. You only need to give us clear access and switch off what needs to be off. The visit takes an hour or two for one fan, longer when it’s hard to reach. For a job in Coldblow, tell us about loading bays, permits, lifts and roof access when you book.
- First we check the fan’s condition and how it sounds.
- Once isolated, we open the fan up.
- The impeller is cleaned blade by blade so it runs balanced.
- Housing, outlet and the area around the motor are cleaned.
- The fan goes back into service with a report on its condition.
How to prepare
- Mention any locked doors, roof access or ceiling voids
- Clear the space around the work
- Tell us about site rules, permits or sign-in
Ask for a quote
Getting a quote does not take long. Send a few details and pictures, and we usually reply with a fixed quote within one working day. If we need to see the system first, we book a survey around your hours.
Related advice
Honest limits
In fairness, there are a few things this work will not fix:
- Grease in the duct and canopy before the fan (those need a full TR19 clean)
- A fan that will not start
- A fan that’s too small for the system (a design question)
If in doubt, give us a ring on 0345 646 2711, or send details by email and we’ll say what we think before you book.
What we work on in Coldblow
- Fan housings
- Centrifugal fans
- Axial fans
- In-line fans
- Roof-mounted fans
- Discharge points
Extract fan cleaning in Coldblow: the local picture
The FSA’s data shows about 33 pubs, bars and clubs registered within roughly a mile and a half of the centre of Coldblow. Any of them serving cooked food has an extract to keep clean, from canopy to discharge. London Fire Brigade covers Coldblow. Fire and rescue authorities enforce the Fire Safety Order in most non-domestic premises, and in a kitchen that fire risk includes the grease in the extract. Food hygiene inspections in Coldblow are the job of Bexley council’s environmental health team. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. A dated certificate in the maintenance file answers the question before it’s asked.
Where a hall near Church of St Mary the Virgin, or anywhere in Coldblow, hosts lunch clubs or events, its extract gathers grease just as a café’s does. A kitchen near Bexley station that serves breakfast and dinner can run its extract twelve hours or more, which shortens the cleaning interval.
Coldblow is about 3 miles east of Sidcup, in Greater London. Whether your site is in the middle of Coldblow or further out, extract fan cleaning is available to all kinds of commercial premises, from a single unit to a large public building. Our area takes in 764 places across Greater London, large and small. For sites nearby, see our London page (12 miles or so).
We cover every part of the DA5 postcode area for extract fan cleaning and the streets around it. Whether your site is on St Mary's Road, Dartford Road and Wansunt Road or anywhere close by, our technicians can take on the work. We also cover Joyden's Wood (1 mile south-east), Bowmans (1 mile east), North Cray (1 mile south-west), Crayford (1 mile north-east) and Wilmington (1 mile south-east). We also work in nearby towns such as London (12 miles west), City of Westminster (15 miles west), Marylebone (14 miles north-west), St Pancras (14 miles north-west), Shoreditch (12 miles north-west) and Walthamstow (13 miles north-west).
Local landmarks in Coldblow
Typical jobs here are in premises near The Old Wick pub, St Columba's Catholic Boys' School and Braeburn Park, among other places. Coldblow’s nearest station is Bexley station, about 0.6 miles west. Nearby you’ll also find Stone Castle (5 miles east) and Bexley Museum (0.7 miles north). Green spaces nearby include Wansunt Pit and Summer Hill.
Aftercare tips
Think of this as the after-treatment advice, in brief:
- Do not turn the fan off mid-service
- Make sure the fan is included each time
- File the fan’s report with your other records
- Check filters are seated before cooking
File the photo report with your other extract records. It shows the fan’s condition at the time of the clean, which helps if anything changes later.
Listen to the fan. Rattles, hums or shaking can be early signs of build-up or wear and early action can save a repair.