Hertfordshire · Extract fan cleaning
Codicote Bottom extract fan cleaning
Extract fan cleaning for Codicote Bottom, from a team that has been trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Hot, greasy smells near the fan
- A fan motor running hot under a coat of grease
- A fan that has never been cleaned
What we’re called out for in Codicote Bottom
Poor filters mean a greasier fan. When filters don’t seal, grease goes straight through to the fan, so the fan takes far more than it should.
Clients typically contact us when they notice one of these:
- An extract fan with no cleaning record
- Fat spreading onto the roof or wall by the fan
- A fan coated in grease inside its housing
- A fan that no longer moves enough air
Kitchens that cook twelve hours or more a day, as some healthcare kitchens do, fall into BESA’s three-monthly minimum; Queen Elizabeth II Hospital is the nearest hospital to Codicote Bottom, about 5.2 miles south-east.
Questions to ask before booking
- Whether a survey comes first
- Whether the price is fixed
- Whether they’re fully insured
- Whether inaccessible sections are listed on the report
Extract fan cleaning in Codicote Bottom, done properly
A clean fan isn’t a repaired fan. If we find worn bearings, a struggling motor or damage to the impeller, we will tell you, and we also repair and replace extract fans. You will know whether the fan just needed cleaning or something more. The work covers discharge points, centrifugal fans and roof-mounted fans, and people most often call us about vibration from an unbalanced impeller and weak extraction at the canopy.
In a small place like Codicote Bottom, kitchens are often in older or extended buildings, with long single-storey duct runs, where grease settles in the flat sections. Access, parking and timings are agreed before the day.
Nothing is signed off by word of mouth: a written report, dated and illustrated with pictures, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. It shows what was done and what, if anything, couldn’t be reached.
- Where
- Codicote Bottom (SG4)
- Region
- Hertfordshire
- Paperwork
- TR19® certificate and photo report
- Quotes
- A fixed quote up front
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Between visits
So the system stays in good health:
- Never cook with a filter missing
- Listen for new noises or vibration from the fan
- Check the report shows the fan was cleaned
- Do not store items in front of the fan’s access point
When the fan is cleaned as part of a full TR19® Grease clean, a TR19 certificate is issued through the BESCA Vent Hygiene Elite portal. If only the fan is cleaned, the photo report says so.
A change in how the fan sounds is worth noting. Rattles, hums or shaking can be early signs of build-up or wear, and catching it early keeps it a cleaning job.
Different parts, different methods
Inline duct fans
An inline fan can be easy to forget because it’s out of sight. The survey makes sure it’s part of the clean.
Roof-mounted fans
Roof fans also discharge grease onto the roof around them and we check the area around the outlet. We note any grease around the fan.
The process
Your trading hours come first. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. Once we are in, the area is sheeted and anything that has to be off is turned off and cooled, and the job takes a couple of hours per fan, depending on its size and the build-up. Visits to a village like Codicote Bottom are booked in advance, at a time that suits whoever runs the site.
- 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.
- The fan is put back into service, checked and photographed.
How to prepare
- Arrange a key holder or contact on site
- Dig out any earlier paperwork for the system
- Let us know about permits to work or site inductions
Get a fixed 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.
Advice
Also near Codicote Bottom
What else we do in Codicote Bottom
What affects the quote in Codicote Bottom
A fixed price needs a few facts first. We check:
- Whether we need access equipment or extra panels
- Site requirements such as sign-in and permits
- What state the system is in
- Travel, parking and unloading
Whatever the type of site, the quote works the same way: how much there is, how we reach it, what state it’s in and when we can work. Call for a fixed quote and we will explain each part.
Asking for a quote
To help us quote quickly, send us:
- A few general shots of the system
- The site address and the type of premises
- Any symptoms, from odd noises to smells or leaks
- Any access panels or hatches you can see
Want a quote for extract fan cleaning? Please call us on 0345 646 2711 or send us an email and tell us about the site. We will explain what we’d do and send a fixed quote before anything is booked.
Codicote Bottom questions
Do you do school kitchen extract cleaning in Codicote Bottom in the summer holidays?
Yes, out-of-term visits are normal for schools. With about 4 schools and colleges on the FSA’s register within roughly a mile and a half of Codicote Bottom, it pays to plan holiday dates ahead. You can ring 0345 646 2711, or send details by email with the dates the site is empty.
Can the work in Codicote Bottom be done at night or at weekends?
Yes, evening, overnight and weekend work is normal for us. It means the site in Codicote Bottom keeps running as normal. Tell us your opening hours when you ask for a quote.
What about areas you can’t get to?
The report shows them clearly. Often the fix is extra access, such as new panels in ductwork, and we can fit those.
How much notice do you need?
The more notice, the better, particularly for night and weekend visits. We normally quote within one working day, and emergencies are covered by our 24/7 line.
How often should the extract fan be cleaned?
At least as often as the rest of the extract, which BESA guidance sets by daily cooking hours: every 3, 6 or 12 months. Some fans need attention sooner.
Are you fully insured?
Yes. Duct Doctor is fully insured, and the details are available on request.
Will we have to shut during the visit?
Not typically. The area we’re working in has to be out of use while we’re there, so we book a time when it would be closed anyway.
How much does extract fan cleaning cost in Codicote Bottom?
There’s no set price, as it depends on the job: how big it is, what state it’s in, how we reach it and the working hours. You get a fixed price before work begins.
For landlords and multi-site operators
Multi-site operators often want one contractor and one number. We work across London and the South East, so a run of sites can go into one programme and kept to a regular schedule.
Records are where multi-site compliance often slips. Each visit produces a dated report with photos, ready to show insurers, fire officers or EHOs.
Codicote Bottom kitchens: local notes
Food Standards Agency records list about 4 cafés, restaurants and staff canteens in Codicote Bottom and the streets around it, up to about 1.5 miles out. The fan at the end of each of those extracts collects grease that slows it and wears the motor. The fire and rescue service for Codicote Bottom is Hertfordshire Fire and Rescue Service. Its fire safety officers can audit commercial kitchens, and grease in the extract is part of a kitchen’s fire risk. In Codicote Bottom, food businesses are inspected by environmental health officers from North Hertfordshire council. An officer looking round a kitchen will see the canopy, and grease there is hard to miss. Our report lists what was cleaned and when, which is useful to have ready.
Older buildings often hide long, awkward duct runs, and if you run a kitchen at a historic venue in the area (Shaw's Corner is about 1.3 miles south-west), access may need planning. For schools such as Codicote Church of England Primary School, kitchen extract cleaning is normally booked for the holidays, when the canteen is closed.
Codicote Bottom is about 4 miles north-west of Welwyn Garden City, in Hertfordshire. We carry out extract fan cleaning for commercial premises of every kind in Codicote Bottom and the rest of Hertfordshire. Our area takes in 381 places across Hertfordshire, from busy centres to quieter spots. Our London page covers sites nearby, about 25 miles away.
All of SG4 is within our area for extract fan cleaning, from the main roads to the quietest streets. If you need extract fan cleaning at premises on Heath Hill and Kimpton Road or anywhere close by, our technicians can take on the work. Neighbouring places we cover for extract fan cleaning include Codicote (1 mile east), Ayot St Lawrence (1 mile south-west), Driver's End (1 mile north-east), Nup End Green (2 miles north-east) and Ayot St Peter (2 miles south). We also work in nearby towns such as Watford (14 miles south-west), Hemel Hempstead (11 miles south-west), Stevenage (5 miles north-east), St Albans (7 miles south-west), Welwyn Garden City (4 miles south-east) and Harpenden (5 miles south-west).
Local landmarks in Codicote Bottom
Locally, jobs take us to businesses close to Danesbury Park, The Goat Public House and Monk's Walk School. The closest station to Codicote Bottom is Welwyn North station, roughly 2.9 miles south-east of the centre. A little further out are Howard Centre (3.7 miles south-east) and Datchworth Museum (3.8 miles east). The countryside around Codicote Bottom includes Stocking Springs Wood.
What extract fan cleaning cannot fix
Before booking, it helps to know what’s not included:
- A failed motor or worn bearings (that needs a fan repair or replacement)
- A dirty duct upstream of the fan
- Damaged fan blades
If you are not sure, just call 0345 646 2711 or email us and we’ll give you a straight answer before you book.
Where we work
- Axial fans
- Centrifugal fans
- In-line fans
- Fan housings
- Discharge points
- Roof-mounted fans