Hertfordshire · Extract fan repair and replacement

Digswell extract fan repair

Professional extract fan repair in and around Digswell, timed so the site keeps working and finished with a written report and pictures.

  • A fan that whines, hums or grinds
  • A fan that will not start at all
  • A fan rattling in its housing

Book extract fan repair in Digswell

In-house cleaning or a specialist?

In-house cleaning and specialist cleaning do different jobs. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but grease that has passed the filters is out of reach. That part needs specialist access and equipment.

Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they cannot safely do is clean inside the ductwork, the fan or the risers, which is where we come in.

How we handle extract fan repair in Digswell

Extract fan repair starts with a diagnosis. A noisy fan might need cleaning, new bearings or a new belt; a dead fan can point to the motor or its controls. You hear what we have found before any work goes ahead. If you are dealing with a belt-driven fan that squeals and poor airflow at the canopy, we can put it right.

A callout to a place like Digswell is planned so the first visit fixes as much as possible, based on what you tell us about the fan.

We’ve been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we are fully insured.

The Duct Doctor team standing beside their branded white and blue vans
Place
Digswell (AL8, AL7, AL6)
Region
Hertfordshire
Records
Report and pictures after the visit
Price
A fixed quote up front
When we work
Overnight and weekend work, 24/7 emergency callout
Call
0345 646 2711
Last updated
30 October 2026

Aftercare tips

Simple habits between visits make a real difference. Our advice:

  • Save our number for the 24/7 emergency line
  • Make sure the fan is cleaned with the rest of the system
  • Make sure the isolator and controls are easy to reach
  • Get a noisy fan checked rather than slowed down

Clean filters help a repaired fan stay that way. The less grease that reaches the fan, the longer its parts last and fewer faults.

A 3, 6 or 12-monthly cleaning plan brings us back at set intervals, so the fan is looked at as part of each visit and wear is caught earlier.

Why act early in Digswell

Some kitchens run a noisy fan on a lower speed to cut the noise. That reduces extraction without fixing anything while the underlying wear continues. Diagnosing the fault properly is the lasting answer. Systems on quieter sites still build up dirt and wear, just more slowly.

When the work has to happen, how we reach it and how big the site is can all change the price. Each of those is built into the quote, and the price is fixed before we start.

Why book with us

  • We are fully insured
  • One contact for all your sites in London and the South East
  • Each visit written up, with pictures
  • Survey first, then a fixed quote

Read how cleaning jobs are priced or how to check a contractor.

Digswell questions

Who inspects food businesses in Digswell?

That is Welwyn Hatfield council, whose environmental health officers carry out food hygiene inspections in Digswell. An officer may ask how the kitchen is ventilated, so keep repair records with your maintenance file.

Do you cover smaller places like Digswell?

Yes, smaller places are covered as well as towns. Let us know about access, parking and anything unusual about getting there when you book.

Are you fully insured?

Yes. We carry full insurance and have been trading since 2009.

How much notice do you need?

Earlier is better, especially for out-of-hours work. Quotes typically come back within one working day, and there’s a 24/7 line for emergencies.

How much time does a fan repair need?

As a guide, it takes an hour or two to diagnose, then longer if parts or a new fan are needed. Where parts need ordering, we will explain the timescale.

Do you replace extract fans as well as repair them?

We do. A replacement is matched to the system it’s going into with a fixed price agreed before any work starts.

What makes a kitchen extract fan rattle or whine?

There are several possible causes, including bearings, belts, grease and mounts. It’s worth having it diagnosed before it leads to a breakdown.

What should go in our maintenance log?

The reports and certificates from each visit, plus your own logs. Insurers, fire officers and EHOs may all ask to see them, so keep them where they can be found quickly.

Signs you need extract fan repair in Digswell

Some grease always slips past the filters and reaches the fan. It builds up on the impeller blades unevenly, so the fan runs out of balance and the noise follows.

These are the problems we see most often:

  • A fan that whines, hums or grinds
  • A fan worn beyond sensible repair
  • A squealing belt on start-up
  • A fan shaking on its mountings

If you look after a church or hall kitchen near Digswell Village Church, or anywhere in Digswell, test the extract fan before a big event rather than on the day.

What your quote should include

  • Exactly which parts of the system are covered
  • Whether they recommend a next date
  • Whether the quote shows VAT
  • If they look at the system before pricing

Choosing a duct cleaning contractor

How we price extract fan repair

Sites vary more than people expect. The main factors:

  • How big the system is
  • The condition of the system
  • The times the site is available
  • Parking and loading at the site

We don’t list prices on the website, because the cost depends on the site in front of us. For a fixed quote, give us a ring on 0345 646 2711, or email photos, and we will talk you through it.

Helping us quote

Photos and a few facts are often enough to price the work. Send what you can of the following:

  • Any access panels or hatches you can see
  • The paperwork from the last visit, if you have it
  • Wide pictures of the system and the area around it
  • The postcode and the type of business

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.

How it works

Everything the job needs comes with us, including protection sheets, the right tools and access kit. All we need from you is clear access and the right equipment switched off. On site, the work takes anything from an hour or two to a full visit, depending on the fault. Tell us when your site near Digswell is quiet and the visit will be booked for then.

  1. We ask what the fan is doing, from noise and vibration to a full stop.
  2. With the fan safely isolated, we open it up for a proper look.
  3. The impeller, bearings, belts or drive, motor and mounts are all inspected.
  4. You get our diagnosis and a fixed quote to repair or replace.
  5. Once the work is done, we run the fan and check it’s steady and quiet.

How to prepare

  • Agree a time when the area can be out of use
  • Have your last certificate or report to hand
  • Mention any sign-in, permit or induction we need

Ask for a quote

Need a price for extract fan repair? Please ring 0345 646 2711, or send details by email and tell us about the site. We’ll talk you through the work and give you a fixed quote before you commit to anything.

Get a quick quote

Related advice

When it’s something else

We’d rather tell you now than book work that won’t help, so here are the limits:

  • Problems with the gas supply or its interlock valve
  • Odour complaints that need filtration rather than a fan repair
  • A greasy canopy and duct that a fan repair won’t touch

If in doubt, call us on 0345 646 2711 or send us an email and we’ll say what we think before you book.

Parts of the system we cover

  • Fan housings
  • Bearings
  • Kitchen extract fans
  • Belts and pulleys
  • Fan motors
  • Roof and wall fans

Extract fan repair around Digswell

There are about 55 cafés, restaurants and staff canteens and about 13 takeaways within 1.5 miles or so of the middle of Digswell, according to the Food Standards Agency’s register. Those that cook under a canopy rely on a fan that runs every hour they’re open. Digswell, about 23 miles from central London, is within our usual area. We work evenings, overnight and at weekends, so the visit fits around the site. Food hygiene inspections in Digswell are the job of Welwyn Hatfield council’s environmental health team. Under food hygiene rules, a kitchen needs suitable and sufficient ventilation. Getting the fan running again is the priority.

For a takeaway near Welwyn North station, a fan that fails on a busy evening means turning customers away, and our emergency line runs 24/7. If you manage a school such as Harwood Hill Junior Mixed Infant and Nursery School and the kitchen fan is getting louder, the next break is the time to deal with it.

Digswell is about 1 mile north of Welwyn Garden City, in Hertfordshire. Across the AL8 area, we cover extract fan repair for commercial sites. Our Hertfordshire coverage runs to 381 places, Digswell among them. London is in our area too, about 23 miles from Digswell.

Postcode districts we cover here for extract fan repair: AL8, AL7 and AL6. That includes premises on Adele Avenue, Station Road and Hertford Road and the roads around them. We also cover the places around Digswell: 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). Larger places within reach include 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).

Local landmarks in Digswell

Typical jobs here are in premises near Hedgehog pub, Monk's Walk School and Danesbury Park, among other places. Digswell has its own railway station: Welwyn North station. A little further out are Howard Centre (1.3 miles south) and Datchworth Museum (2.6 miles north-east). The countryside around Digswell includes Tewin Orchard and Hopkyns Wood.

Map of Digswell © OpenStreetMap contributors
BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London