Hertfordshire · Extract fan cleaning
Extract fan cleaning in Welwyn Garden City, Hertfordshire
Extract fan cleaning in Welwyn Garden City, surveyed first and signed off with a written report and photos. Call for a fixed quote.
- A motor area thick with grease
- Vibration from an unbalanced impeller
- Fat spreading onto the roof or wall by the fan
What your team can do, and what needs us
Away from the kitchen, the in-house job is mainly checking: keeping grilles clear, noting unusual noise or smells and logging filter changes. The inside of ducts and units needs a specialist.
Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. Inside the ducts, risers and fan is specialist work, which is where we come in.
How we handle extract fan cleaning in Welwyn Garden City
Grease on a fan isn’t spread evenly. Heavier deposits on some blades throw the impeller off balance, which brings vibration, noise and extra wear on the bearings and motor. A thorough clean removes the cause. If you are dealing with burning smells from the fan area and a fan that no longer moves enough air, we can help.
In a town like Welwyn Garden City, most of the kitchen extracts we’re asked about belong to restaurants, cafés, pubs, takeaways and school or care home kitchens. Each has a canopy, filters, ductwork and a fan to keep clear of grease.
Our accreditations include CHAS, SafeContractor and ISO 9001, and we’re fully insured. We’re also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Location
- Welwyn Garden City (AL7, AL8, AL6)
- Region
- Hertfordshire
- Reporting
- Certificate plus before-and-after pictures
- Price
- A fixed price before we start
- Hours
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
Towns and villages near Welwyn Garden City
What else we do in Welwyn Garden City
How the job changes from site to site
Kitchens with long cooking hours
Kitchens that cook 12 to 16 hours a day put the most grease through their fans. Under BESA guidance, heavy use means cleaning at least every 3 months, fan included.
Fan housings and motors
The housing around the impeller catches grease flung off the blades. We clean it along with the blades.
Welwyn Garden City questions
Which environmental health team covers Welwyn Garden City?
Kitchens in Welwyn Garden City are inspected by Welwyn Hatfield council’s environmental health officers. An officer may look up into the canopy, so clean filters on the day and a recent certificate on file both help.
Can the work in Welwyn Garden City be done at night or at weekends?
Yes, evening, overnight and weekend work is normal for us. Your customers, staff or residents in Welwyn Garden City needn’t be disturbed. Tell us your opening hours when you ask for a quote.
Who is the responsible person?
It depends on the building. The Fire Safety Order 2005 puts the duty on the responsible person, which can be the employer, the owner, a landlord, an FM or a managing agent.
How much notice do you need?
For planned work, earlier is better, especially if the next clean or test is due soon. Emergencies are different, because our line is open 24/7.
Do you provide a report after cleaning the fan?
Photos, notes on condition and a recommended next date. File it with your other extract records.
Can the fan be cleaned between full cleans?
Yes. We record it as a fan-only clean, so your TR19 records stay accurate. The whole system still needs cleaning at the intervals in BESA guidance.
What does TR19 mean?
TR19® is BESA’s specification for ventilation hygiene. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
Do you work with multi-site operators?
Yes. We work across South East England and London, so sites at different addresses can be planned together on one programme. Every site has its own report.
Common problems we fix in Welwyn Garden City
By the time air reaches the fan, it has passed the canopy, filters and duct. The grease that is left lands on the blades and the casing where the spinning blades spread it around.
The symptoms we are asked about most are:
- A fan that hums, whines or rumbles
- Grease around the motor and its mounts
- Thick grease on the impeller and casing
- A fan that has never been cleaned
A kitchen near Welwyn Garden City station that serves breakfast and dinner can run its extract twelve hours or more, which shortens the cleaning interval.
Questions to ask before booking
- Whether the work can be done while the site is closed
- Whether the quote is based on a survey or photos
- Whether they’re fully insured
- What’s included in the scope, part by part
Extract fan cleaning in Welwyn Garden City: the local picture
The FSA’s data shows about 11 pubs, bars and clubs and about 4 hotels and B&Bs registered in Welwyn Garden City and the streets around it, up to about 1.5 miles out. Where they serve hot food, their kitchen extracts need cleaning to TR19® like any restaurant’s. Fire safety in Welwyn Garden City falls to Hertfordshire Fire and Rescue Service. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises. Environmental health officers from Welwyn Hatfield council inspect food businesses in Welwyn Garden City. Extraction counts as kitchen equipment, so its condition can come up on the day. Our report lists what was cleaned and when, which is useful to have ready.
Term dates shape school work: for a school like Peartree Primary School, an extract clean fits neatly into a half-term or summer break. If you run catering at a healthcare site, such as a hospital like Queen Elizabeth II Hospital about 1.1 miles south, the extract may need cleaning more often than a part-time kitchen.
Welwyn Garden City is in Hertfordshire. Whatever kind of site you run in Welwyn Garden City, we can take on extract fan cleaning. We can work out of hours so the site keeps running. We cover 381 places across Hertfordshire, from busy centres to quieter spots. London is in our area too, around 21 miles away.
Every address in AL7, AL8 and AL6 is covered for extract fan cleaning, from busy streets to back roads. Streets in the area include Church Road, Station Road and Lynmouth Road, all of which we cover for extract fan cleaning. Welwyn Garden City is on the B195 and A1000, which makes it straightforward for our technicians to reach for out-of-hours visits. Close by, we work in Hatfield Hyde (1 mile south), Letty Green (3 miles south-east), West End (3 miles south), Essendon (3 miles south-east) and Staines Green (3 miles east). Further out, we also cover Watford (13 miles south-west), Hemel Hempstead (12 miles west), Stevenage (8 miles north), St Albans (7 miles south-west), Harpenden (7 miles west) and Hitchin (11 miles north). As one of the bigger places in Hertfordshire, Welwyn Garden City has commercial sites of every size, and we cover all of them for extract fan cleaning.
Around Welwyn Garden City
Locally, jobs take us to businesses close to Stanborough Park, Sir Frederic Osborn School and The Bakehouse pub, among other places. The closest station to Welwyn Garden City is Welwyn Garden City station, roughly 0.5 miles west of the centre. Well-known places in the area include The Bunker at Hatfield Police Station (2.9 miles south-west) and Queen Elizabeth II Hospital (1.1 miles south). The countryside around Welwyn Garden City includes Lemsford Springs.
What affects the cost of extract fan cleaning
Before we fix a price, we need to know a few things. We check:
- Parking and loading at the site
- What state the system is in
- Working hours and out-of-hours timing
- How easy every part is to reach
One small site or a whole estate, the quote is built the same way: what needs doing, how we get to it and when. You’ll have a fixed price before any work starts.
What to send for a quote
When you call or email, these details help:
- When the site is open and when it’s quiet
- Any access panels or hatches you can see
- The postcode and the type of business
- Wide pictures of the system and the area around it
Here’s what helps us quote: the address, the type of site and when it’s open, a few photos and the last certificate or report, if there is one. Then ring 0345 646 2711 or drop us a line.
When it’s something else
Not every problem is solved by extract fan cleaning, and we’ll tell you before we start. It won’t put right:
- A fan that was never right for the kitchen
- A faulty speed controller or isolator
- A motor that has burnt out
If you’re not sure, just call 0345 646 2711 or email us and we will give you a straight answer.
Parts of the system we cover
- Roof-mounted fans
- Discharge points
- Fan housings
- In-line fans
- Axial fans
- Centrifugal fans
The process
On the day, we arrive at the time agreed with you, which is often after service, overnight or at a weekend. Equipment that has to be off is switched off and allowed to cool first, and the area around the work is covered and protected. The work itself takes an hour or two for one fan, longer when it’s hard to reach. We arrive in Welwyn Garden City once you’ve closed and leave the site ready for the morning.
- We find the fan and check how it’s reached and how it’s isolated.
- The fan is isolated so it can’t start while we work.
- The impeller and the housing around it are scraped clean.
- We degrease the fan and housing, taking care around the motor.
- It’s closed up, run and checked, and pictures go into your report.
How to prepare
- Clear loose items from the work area
- Dig out any earlier paperwork for the system
- Allow time for equipment near the work to be turned off and cool down
How to get a quote
Photos are the quickest way to a quote: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.
Read more
Why deal with it now?
Vibration from an unbalanced impeller does not stay small. It can wear the bearings and lead to failure and a kitchen can’t cook safely without extraction. A planned clean beats an emergency. Each month of use adds to the build-up, so a site in Welwyn Garden City is better off booking it now.
What you pay reflects the actual work. That is why we survey first, from photos or on site, and why the quote is fixed before work begins.
Why choose Duct Doctor in Welwyn Garden City
- One number for every site across the South East and London
- CHAS, SafeContractor and ISO 9001
- A fixed price before any work starts
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Take a look at what affects the cost and our accreditations.