Hertfordshire · Extract fan repair and replacement
Welwyn extract fan repair
Extract fan repair for Welwyn, with a survey first and a report with pictures at the end. Ask us for a fixed quote.
- A whining or grinding extract motor
- An extract fan that has stopped working
- A fan worn beyond sensible repair
Different parts, different methods
Motors and bearings
An overheating motor is a warning sign. It may be straining against blocked filters or ducts, or the motor itself may be failing.
Direct-drive fans
In a direct-drive fan, the impeller sits on the motor shaft. There are no belts, so faults tend to be in the motor, bearings or impeller.
How we handle extract fan repair in Welwyn
Wherever your kitchen is in Welwyn, fan work means the extract has to be isolated, so we plan it around your service. We can work in the evening, overnight or at the weekend and there’s a 24/7 emergency line if the fan fails while you are cooking. Common call-outs are for a belt-driven fan that squeals and a motor that trips out or overheats, across kitchen extract fans, fan housings and fan motors.
Around a place like Welwyn, a pub, café or care home kitchen with a failed fan cannot carry on cooking as normal. That’s what our 24/7 emergency callout is for.
Duct Doctor has been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we carry full insurance.
- Location
- Welwyn (AL6)
- Wider area
- Hertfordshire
- Paperwork
- Photo report after each visit
- Quote
- Fixed quote, usually within a working day
- Hours
- Out of hours as standard, 24/7 emergency line
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
What else we do in Welwyn
When to call us in Welwyn
Some faults are in the controls rather than the fan. Speed controllers, isolators and wiring can all fail so we check the controls before blaming the motor.
Signs it’s time to call us include:
- A knocking noise from the extract fan
- A worn or slipping fan belt
- An extract that vibrates through the ductwork
- A whining or grinding extract motor
A fan that rarely runs, like one in a hall kitchen near Parish Church of St Mary or elsewhere in Welwyn, can seize between uses.
Comparing quotes
- If the quote is a fixed price or an estimate
- When the next visit should be, and why
- How areas they can’t reach will be recorded
- What paperwork you get at the end
Extract fan repair in Welwyn: local notes
There are about 14 restaurants, cafés and canteens within about 1.5 miles of central Welwyn, according to the Food Standards Agency’s register. A kitchen with a dead extract fan gets hot and smoky fast, and kitchens like these feel it at once. Welwyn, about 23 miles from central London, is within our usual area. Evening, overnight and weekend visits are all possible. Kitchens in Welwyn get their food hygiene inspections from Welwyn Hatfield council. A kitchen with no working extract can fall short of the suitable and sufficient ventilation food hygiene rules expect. So a failed fan is worth fixing before the next service, not the next month.
If you manage a school such as Monk's Walk School and the kitchen fan is getting louder, the next break is the time to deal with it.
Welwyn is about 2 miles north-west of Welwyn Garden City, in Hertfordshire. We provide extract fan repair for commercial premises of every kind in Welwyn and the rest of Hertfordshire. Across Hertfordshire, we cover 381 places, and Welwyn is one of them. You can also see our page for London, about 23 miles away.
Postcode districts we cover here for extract fan repair: AL6. That includes premises on High Street, London Road and Mimram Place and the roads around them. If your site is just outside Welwyn, we cover Monkswood (1 mile south-east), Ayot St Peter (1 mile south-west), Ayot Green (1 mile south-west), Pottersheath (2 miles north) and Codicote (2 miles north-west). Further out, we also cover Watford (14 miles south-west), Hemel Hempstead (12 miles south-west), Stevenage (6 miles north), St Albans (7 miles south-west), Harpenden (6 miles west) and Hitchin (9 miles north).
What’s near Welwyn
Typical jobs here are in premises near Stable Door pub, Danesbury Park and Homerswood Primary and Nursery School and the streets around them. Welwyn’s nearest station is Welwyn North station, about 1.1 miles south-east of the centre. A little further out are Queen Elizabeth II Hospital (3.5 miles south) and Datchworth Museum (2.7 miles north-east). Not far away are Mardley Heath.
Aftercare tips
Once we’ve finished, these simple steps help:
- Tell us about a new rattle or whine right away
- Keep the fan on a planned cleaning cycle
- Never run the extract with filters missing
- Clean or change filters on schedule
If parts have to be ordered, we tell you how the kitchen can carry on in the meantime. We then come back and fit them outside your busiest hours.
The fan is part of every full TR19 clean. Keeping grease off the impeller is one of the simplest ways to protect it and that means less wear.
Common questions in Welwyn
Which council inspects kitchens in Welwyn?
That’s Welwyn Hatfield council, whose environmental health officers carry out food hygiene inspections in Welwyn. If the extract fan has failed, it’s worth having the repair booked, and the details to hand, before an officer visits.
Do you cover Welwyn for emergency fan repairs?
Day or night, a failed fan in Welwyn can be reported on our emergency line. Call 0345 646 2711 and tell us what the fan is doing, or not doing. Details of the make and model help us plan the repair.
Will I get paperwork for my records?
Yes. It’s the record insurers and inspectors ask to see: a dated report with pictures, listing the work and any areas we couldn’t reach.
How far ahead should we book?
It depends on the time you need and how big the job is. Tell us your preferred dates when you ask for a quote, and if it’s an emergency, call us any time.
What should go in our maintenance log?
Everything that shows the system is looked after: our reports and photos, any certificates and your in-house logs. A single log for each site works best.
How long will the fan be out of action?
A typical repair takes a few hours on site, depending on the fault and the access to the fan including running the fan afterwards. We will fit it around the kitchen’s hours wherever we can.
Do we need to close while you work?
Not typically. We need the work area to ourselves while we are on site, so the visit goes in a quiet slot.
Which accreditations do you hold?
We hold CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
Staff cleaning versus specialist work
Staff cleaning and specialist work are not the same thing. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but they do not reach the grease that builds up further in. That part needs specialist access and equipment.
Good housekeeping makes our visits easier, not unnecessary. Clean filters and tidy surfaces slow the build-up, but the parts you cannot see still need a specialist at the right interval.
What we do, step by step
The visit has three parts: getting the area ready, doing the work and signing it off. Set-up means sheeting and making equipment safe, while signing off means the written report and photos. The middle part takes longest, which takes part of a day for most faults, with a return visit if parts have to be ordered. Tell us when your site near Welwyn is quiet and the visit will be booked for then.
- We agree a time to attend, out of hours if needed.
- The extract is switched off and the fan opened up.
- We inspect every moving part and the fixings.
- You hear whether repair or replacement makes sense, with a fixed quote.
- We complete the work and check the fan runs smoothly.
Getting ready for the visit
- Tell us the best time to work, such as after service or at a weekend
- Clear loose items from the work area
- Let us know how we reach the system, including roofs, risers and plant rooms
How to get a quote
Some systems can be priced from pictures; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, the quote is fixed before any work is booked.
Related advice
When it’s something else
In fairness, there are a few things this work won’t fix:
- Grease throughout the ductwork, which needs a full TR19 clean
- Smells from the discharge that need odour control equipment
- Faults on the gas side of an interlock system, which need a Gas Safe registered engineer
If you’re not sure, just ring 0345 646 2711 or use the quote form and we will give you a straight answer.
What we work on in Welwyn
- Roof and wall fans
- Belts and pulleys
- Fan housings
- Fan motors
- Kitchen extract fans
- Bearings
Managing agents and facilities teams in Welwyn
For anyone managing more than one site, we can schedule visits across all of them on one quote. Every building has its own written report, so each one has its own record.
Where a tenant occupies the premises but the landlord owns the building, it’s worth checking the lease for who maintains the systems. We are happy to deal with either side and send the paperwork to whoever needs it.