Hertfordshire · Extract fan cleaning
Digswell extract fan cleaning
We cover Digswell for extract fan cleaning. Out-of-hours visits, a fixed quote and a written report with photos on every job.
- Grease stains around the discharge
- A fan left out of previous cleans
- Burning smells from the fan area
Do you need extract fan cleaning in Digswell?
Grease on a fan is a fire risk, in Digswell as anywhere. If grease in the duct catches, the fan and its housing can feed the fire and an overworked motor runs hotter.
Signs it’s time to call us include:
- A fan shaking on its mounts
- A noisy fan that has got louder over time
- A fan that no longer moves enough air
- Grease around the motor and its mounts
A kitchen near Welwyn North station that serves breakfast and dinner can run its extract twelve hours or more, which shortens the cleaning interval.
What to look for in a quote
- Whether a survey comes first
- Whether they’re fully insured
- How VAT is shown on the quote
- What records you will receive afterwards
Extract fan cleaning in Digswell
Duct Doctor has been cleaning kitchen extract fans since 2009. As a BESCA Vent Hygiene Elite member, we clean to BESA TR19® Grease, and we are fully insured, with CHAS, SafeContractor and ISO 9001. The work covers roof-mounted fans, fan housings and in-line fans, and the jobs we see most are weak extraction at the canopy and a smell of hot grease from the extract.
For a smaller kitchen near Digswell, a TR19® clean is the same job as anywhere: canopy, filters, plenum, duct, fan and discharge. The visit is booked around your opening hours, and the journey is planned ahead.
The sign-off is always in writing: a dated report with pictures of the work, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. Any parts we couldn’t reach are recorded on it too.
- Where
- Digswell (AL8, AL7, AL6)
- Region
- Hertfordshire
- Paperwork
- Certificate plus before-and-after photos
- Quotes
- A fixed price before we start
- When we work
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What else we do in Digswell
What affects the quote in Digswell
The price is fixed before any work begins. It’s based on:
- How big the system is
- Whether we need access equipment or extra panels
- A single visit or a regular plan
- Any permits to work or inductions
Working hours, access and the scale of the site can all change the price. Each of those is built into the quote and give you a fixed price before we start.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in touch, it helps to send:
- Your opening hours and when the area is out of use
- Any previous report or certificate
- A few general shots of the system
- The postcode and the type of business
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.
Honest limits
An honest diagnosis matters more to us than a booking, so here’s what this work can’t put right:
- A fan that won’t start
- Electrical faults in the fan’s supply or controls (an electrician’s job)
- A dirty duct upstream of the fan
If you are not sure, just call us on 0345 646 2711 or email us and we’ll give you a straight answer before booking.
What the work covers
- In-line fans
- Axial fans
- Fan housings
- Roof-mounted fans
- Discharge points
- Centrifugal fans
What we do, step by step
A visit follows the same order every time: protect the area, isolate whatever needs isolating, carry out the extract fan cleaning, clear away and leave you the report. The visit itself takes a couple of hours per fan, depending on its size and the build-up. A site near Digswell usually has room to park, so the questions are about access to the system and your hours.
- Diagnosis first: we look for grease, noise and vibration.
- With the fan isolated, the housing is opened.
- The impeller is cleaned blade by blade so it runs balanced.
- Housing, outlet and the area around the motor are cleaned.
- We run the fan and note its condition in the photo report.
Before we arrive
- Make sure someone can let us in and lock up afterwards
- Agree a time when the area can be out of use
- Make sure equipment near the work can be switched off and left to cool
Ask for a quote
For a fixed quote, ring 0345 646 2711 or email us with the site type, your trading hours and a short description of the system. A few pictures and your last certificate or report help a lot. You’ll usually have a quote within one working day.
Read more
Staff cleaning versus specialist work
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. What they cannot safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
For ventilation and air handling systems, in-house care is mostly about checks: clear grilles, a log of filter changes and reporting anything odd. Cleaning inside ducts and units is specialist work.
Extract fan cleaning around Digswell
The Food Standards Agency lists about 16 pubs and bars as registered food businesses within roughly a mile and a half of the centre of Digswell. A pub or hotel kitchen that cooks every day builds up grease in its extract like any other. Digswell sits within the area of Hertfordshire Fire and Rescue Service. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order. In Digswell, food businesses are inspected by environmental health officers from Welwyn Hatfield council. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. A TR19® certificate and photo report after each clean gives you a record to show an inspector.
If you run catering at a healthcare site, such as a hospital like Queen Elizabeth II Hospital about 2.5 miles south, the extract may need cleaning more often than a part-time kitchen. Volunteers running a hall kitchen near Digswell Village Church, or anywhere in Digswell, may not know when the extract was last cleaned, and a grease test settles it.
Digswell is about 1 mile north of Welwyn Garden City, in Hertfordshire. We provide extract fan cleaning for businesses, landlords and public buildings in Digswell and the rest of Hertfordshire. Our area takes in 381 places across Hertfordshire, from busy centres to quieter spots. There’s also a page for London, about 23 miles away.
We work across the AL8, AL7 and AL6 postcode area for extract fan cleaning and the streets around it. Local streets include Adele Avenue, Station Road and Hertford Road, and we cover them all for extract fan cleaning. Other places close to Digswell include Haldens (1 mile south-east), Harmer Green (1 mile north-east), Burnham Green (2 miles north-east), Oaklands (2 miles north) and Tewin (2 miles east). We also work in nearby towns such as Watford (14 miles south-west), Hemel Hempstead (12 miles west), Stevenage (6 miles north), St Albans (7 miles south-west), Harpenden (6 miles west) and Hitchin (10 miles north).
Around Digswell
Locally, jobs take us to businesses close to Hedgehog pub, Monk's Walk School and Danesbury Park, among other places. Digswell has its own railway station: Welwyn North station. Nearby you will also find Howard Centre (1.3 miles south) and Datchworth Museum (2.6 miles north-east). Green spaces nearby include Tewin Orchard and Hopkyns Wood.
Digswell questions
Do you work overnight in Digswell?
Yes. We work evenings, overnight and at weekends. That way a site in Digswell does not have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
Can you clean school kitchen extracts in Digswell during the holidays?
Yes, and it’s the easiest time to do it. There are about 15 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Digswell. Tell us your holiday dates and we’ll book the visit for when the site is empty.
How much notice should we give?
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.
Can one contract cover all our sites?
Yes. Send the list of sites and the work at each and you will get one fixed quote.
How much does extract fan cleaning cost?
Size, condition, access and working hours all affect the cost. Call for a fixed quote and we’ll usually reply within one working day.
What’s the cleaning interval for an extract fan?
Daily cooking hours set the minimum in BESA guidance. Heavy use means at least every 3 months, light use at least every 12, fan included.
Is there a survey before the work?
Yes. We always survey first, from your pictures and details, or with a visit where needed. A fixed quote follows.
Will I get pictures of the cleaned fan?
A photo report shows the fan before and after. Full system cleans come with a TR19 certificate as well.
Part by part
Inline duct fans
Space around an inline fan can be tight, so we plan how to reach and clean them. Anything out of reach is recorded.
Wall fans
A wall fan pushes the air straight outside. It’s isolated, opened and cleaned inside and out.
Keeping the system healthy
After the visit, a few habits help the work last:
- Keep access to the fan clear
- Keep the fan on whenever the range is lit
- Tell us if the extract feels weaker
- Keep each photo report with the maintenance log
Keep the report with the maintenance log and fire risk assessment. It gives a dated record of the fan’s condition, which helps if anything changes later.
Fewer grease particles reaching the fan means less build-up. Keep the grease filters clean, fitted and in place, and replace any that are damaged.