Surrey · Extract fan repair and replacement
St John's extract fan repair
Extract fan repair across St John's and nearby, timed so the site keeps working and signed off in writing with pictures.
- A whining or grinding extract motor
- An old fan that needs replacing
- A squealing belt on start-up
The process
There’s very little for your team to do on the day. Someone lets us in at the agreed time and shows us where everything is, and the rest is down to us. Before we leave, the area is tidied and the paperwork follows. Visits to a place like St John's are planned ahead, so we arrive with what the survey says the job needs.
- You describe the fault and we arrange a visit.
- On site, the fan is safely isolated.
- The fan and its controls are checked to pin down the fault.
- A fixed quote for the repair or replacement follows.
- We fix the fault and run the fan to check it.
Getting ready for the visit
- Tell us about site rules, permits or sign-in
- Plan for cooking equipment or plant to be off before we arrive
- Agree a time when the area can be out of use
Get a fixed quote
We don’t publish a price list, because every site is different. Instead, we look at your site first, from photos or a survey, then send a fixed quote. To start, call us on 0345 646 2711 or email us.
Advice
Extract fan repair in St John's
The extract fan is what pulls smoke, heat and steam out of the kitchen. When it starts to rattle, hum or slow down, the kitchen gets hot and smoky very quickly. Our engineers track down the fault and fix it with a repair or a replacement. The work covers fan housings, belts and pulleys and roof and wall fans, and the jobs we see most are an overheating extract motor and an extract fan that rattles or knocks.
In a place like St John's, extract fans are often older units on a wall or roof. An older fan that fails may be better replaced than repaired, and we’ll explain the options.
The sign-off is always in writing: a written report, dated and illustrated with photos, 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
- St John's (GU21, GU22)
- Wider area
- Surrey
- Paperwork
- Photo report after each visit
- Price
- A fixed price before we start
- When we work
- Nights, weekends or holidays to suit you
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
Between visits
Once we’ve finished, these simple steps help:
- Tell us about a new rattle or whine right away
- Keep all filters fitted while cooking
- Write down when the fan misbehaves
- Keep the emergency number where staff can see it
Clean filters help a repaired fan stay that way. The less grease that reaches the fan, the longer its parts last and fewer faults.
Regular TR19 cleaning includes the extract fan. A clean impeller stays in balance and that means less wear.
What a clean will not put right
Some problems need a different service or another trade:
- Faults in the building’s electrical supply, which need an electrician
- Gas interlock faults that a Gas Safe registered engineer must deal with
- Odour complaints that need filtration rather than a fan repair
If in doubt, give us a ring on 0345 646 2711, or send details by email and we’ll say what we think.
What we work on in St John's
- Roof and wall fans
- Kitchen extract fans
- Belts and pulleys
- Bearings
- Fan motors
- Fan housings
Why deal with it now?
Where the cooking gas supply is interlocked with the extract, a failed fan can stop the kitchen cooking. Without extraction, the heat and fumes build up fast and fixing the fan early avoids a forced shutdown. It’s easy to lose track of when the work was last done on a quieter site.
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we will go through it with you.
Why choose Duct Doctor in St John's
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Trading since 2009
- Work around your opening hours, with 24/7 emergency cover
- Fully insured
Take a look at what affects the cost or how to check a contractor.
Extract fan repair around St John's
The FSA’s food hygiene register shows about 34 restaurants, cafés and canteens and about 19 takeaways within about 1.5 miles of central St John's. Those that cook under a canopy rely on a fan that runs every hour they’re open. Food hygiene inspections in St John's are the job of Woking council’s environmental health team. Under food hygiene rules, a kitchen needs suitable and sufficient ventilation. So a failed fan is worth fixing before the next service, not the next month. We cover St John's, about 25 miles from central London, as part of our work across London and the South East. Visits are booked around your hours, evenings and weekends included.
Occasional-use kitchens, such as a hall kitchen near St John's Church or elsewhere in St John's, are where a stiff or seized fan can turn up.
St John's is about 1 mile west of Woking, in Surrey. Every kind of commercial site in St John's, we can take on extract fan repair. Visits can be booked for evenings, overnight or weekends so the site keeps running. Our Surrey coverage runs to 395 places, and St John's is one of them.
Work in GU21 and GU22 is surveyed, quoted and booked the same way as anywhere else. Extract fan repair is available to premises on Pond Road, Copse Road and Raglan Road and nearby roads. Being close to the A324, St John's is simple for us to get to for extract fan repair. Other places close to St John's include Goldsworth Park (1 mile north-east), Woking (1 mile east), Westfield (2 miles south-east), Horsell (2 miles north-east) and Mimbridge (2 miles north). Further out, we also cover Guildford (5 miles south), Camberley (6 miles west), Epsom (14 miles east), Farnham (11 miles south-west), Ewell (15 miles east) and Egham (8 miles north).
Around St John's
We work in commercial kitchens and buildings around Hoe Valley School, The Oaktree School and Royal Oak pub and the streets around them. The closest station to St John's is Woking station, roughly 1.6 miles east. Other landmarks nearby include Brookwood Hospital (1 mile west) and The Peacocks (1.6 miles east). Green spaces nearby include Brookwood Lye.
Also near St John's
Other services in St John's
Common problems we fix in St John's
Fans everywhere, St John's included, live in a hard environment: heat, grease, steam and long running hours. Condensation can corrode parts and eventually any fan simply wears out.
If you notice any of these, it’s worth a diagnosis:
- Poor airflow at the canopy
- An extract fan that rattles or knocks
- A failed fan that needs a replacement
- A fan that whines, hums or grinds
If you run a school kitchen, at a school such as The Winston Churchill School A Specialist Sports College or nearby, a fan that is getting noisy is best repaired in the holidays before it fails in term.
Comparing quotes
- Whether inaccessible sections are listed on the report
- Whether they’re fully insured
- Whether the quote shows VAT
- Whether the quote is based on a survey or pictures
What affects the cost of extract fan repair
Your quote is based on your site. We take into account:
- How many systems or sites are involved
- Whether we need access equipment or extra panels
- The condition of the system
- Parking and loading at the site
No two sites are the same, so each one gets its own fixed quote. The size of the job, how we reach it, its condition and the working hours all make a difference.
What to send for a quote
There’s no need for technical detail. It helps if you can send:
- Where the site is and what kind of site it is
- Problems your staff have spotted
- The paperwork from the last visit, if you have it
- The roof, plant room or outside wall the system runs to
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.
Common questions in St John's
Do you cover St John's for emergency fan repairs?
St John's is covered, and our emergency callout runs 24/7. 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.
Do you work at weekends in St John's?
Yes, nights and weekends are routine for us. That way a site in St John's doesn’t have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
What will a fan repair or replacement cost?
The price depends on the diagnosis. After we have checked the fan, we give you a fixed price for the repair or the replacement.
Do you survey before quoting?
Yes. Every job is surveyed first, either from pictures and details you send or on a site visit. Then you get a fixed quote.
Should the fan be cleaned as well as repaired?
The ductwork is a separate job. We will point out grease where we find it, so you can decide whether to book a TR19 clean.
What makes a kitchen extract fan rattle or whine?
It can be one of a few things, from a worn bearing to a loose fixing. It’s worth having it diagnosed before the fault gets worse.
Which records should we keep?
Every certificate and report from each visit, filed in the maintenance log with your in-house cleaning records. BESA advises that certificates record the date, location and technician.
Can you look after several sites?
Yes. Send the list of sites and the work at each and you will get one fixed quote.
What staff can safely do
Away from the kitchen, the in-house job is mainly checking: clear grilles, a log of filter changes and reporting anything odd. Cleaning inside ducts and units is specialist work.
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. What they can’t safely do is clean inside the ductwork, the fan or the risers, which is where we come in.