Portsmouth · Extract fan repair and replacement
Extract Fan Repair in Cosham
Extract fan repair across Cosham and nearby, booked around your opening hours and finished with a written report and pictures.
- An overheating extract motor
- A fan shaking on its mountings
- A worn or slipping fan belt
Honest limits
Some problems need a different service or another trade:
- Faults on the gas side of an interlock system, which need a Gas Safe registered engineer
- An extract system that was undersized from the start
- Wiring and supply faults beyond the fan itself
If you are not sure, just call 0345 646 2711 or email us and we will give you a straight answer.
What we work on in Cosham
- Bearings
- Fan motors
- Fan housings
- Kitchen extract fans
- Roof and wall fans
- Belts and pulleys
About our extract fan repair in Cosham
If an extract fan in Cosham is struggling or has stopped, we diagnose the fault and give you a fixed quote for the repair or the replacement. For a fan that fails during service, there’s a 24/7 emergency callout. If you are dealing with an extract fan that has stopped working and a motor that trips out or overheats, we can help.
A callout to a place like Cosham is planned so the first visit fixes as much as possible, based on what you tell us about the fan.
Insurers, fire officers and environmental health officers all look at records. So every job comes with a written report and photos, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Location
- Cosham (PO6, PO3, PO2)
- Wider area
- Portsmouth
- Reporting
- Report and photos after the visit
- Price
- A fixed quote up front
- Working hours
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
Questions from Cosham
Do you cover smaller places like Cosham?
Yes. Villages and rural sites across the South East are part of our work, Cosham included. A survey first, from pictures or a visit, means we arrive with the right kit.
Is extract fan repair any different in a coastal place like Cosham?
It can. Salt air reaches Cosham, which is within about 1 mile of the coast, and it speeds up rust. We look at fans, cowls and fixings for rust as well as grease.
Do you replace extract fans as well as repair them?
Yes. If repair isn’t sensible, we replace the fan. The replacement has to suit the ductwork and the cooking before recommending a unit.
How much notice should we give?
Book as early as you can for planned work, especially if the next clean or test is due soon. Emergencies are different, because our line is open 24/7.
Which accreditations do you hold?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
Can one contract cover all our sites?
Yes. One number covers all your sites across London and the South East, with visits on a regular schedule.
What does TR19 mean?
A BESA specification in two main parts: TR19® Grease for kitchen extract systems and TR19® Air for general ventilation. It is not legislation, but it’s the standard people check against.
Where does the waste go?
It’s contained and taken away. Grease, debris and waste water are collected as the work goes on rather than letting it spread.
Extract fan repair in Cosham: local notes
Cosham lies within about 1 mile of the sea. Motor mounts, bolts and housings on outdoor fans corrode faster close to the coast. Food Standards Agency data counts about 78 restaurants, cafés and canteens and about 44 takeaways within 1.5 miles or so of the middle of Cosham. A kitchen with a dead extract fan gets hot and smoky fast, and kitchens like these feel it at once. Kitchens in Cosham get their food hygiene inspections from Portsmouth council. Food premises are expected to have suitable and sufficient ventilation under food hygiene rules. So a failed fan is worth fixing before the next service, not the next month.
Hall kitchens near Church of St Philip, or anywhere around Cosham, often use their fans only now and then, and an idle fan can stick. For school kitchens, at schools like Court Lane Junior Academy for example, a planned fan repair in the holidays avoids losing lunches in term time.
Cosham is about 2 miles south-west of Purbrook, in Portsmouth. We provide extract fan repair for commercial premises of every kind in Cosham and the rest of Portsmouth. Cosham is one of 19 places in Portsmouth where we work for commercial clients.
Our technicians cover all of PO6, PO3 and PO2 for extract fan repair and the roads nearby. We cover sites on Dean Road, Park Lane and Elgin Road and nearby roads. Cosham sits on or near the A397, which makes travel easy for evening and night visits. Neighbouring places we cover for extract fan repair include Wymering (1 mile north-west), Hilsea (1 mile south), Drayton (1 mile east), Widley (1 mile north-east) and Paulsgrove (1 mile west). Within a short drive, we also cover Southsea (4 miles south), Milton (3 miles south), Landport (3 miles south), Portsea (3 miles south-west), Portsmouth Point (4 miles south-west) and Fratton (3 miles south).
Landmarks near Cosham
In Cosham, that means kitchens and buildings near The First Post pub, Alexandra Park and Springfield School and the streets around them. There’s a railway station in Cosham itself: Cosham station. Other landmarks nearby include Tricorn Centre (2.9 miles south) and World War I Remembrance Centre (1 mile south-east). The countryside around Cosham includes Southmoor Nature Reserve and Portsdown Hill.
What staff can safely do
For ventilation and air handling systems, in-house care is mostly about checks: keeping grilles clear, noting unusual noise or smells and logging filter changes. Cleaning inside ducts and units is 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.
Multi-site and managed buildings
From a single site to a large estate, you get the same standard: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
Facilities teams in offices, schools and healthcare sites book us too across Portsmouth. Larger estates can be phased building by building to keep disruption down.
Towns and villages near Cosham
Also in Cosham
Different parts, different methods
Direct-drive fans
Many kitchen extracts use direct-drive fans. When the motor fails, replacing the whole fan unit can make more sense than repairing it, and we’ll explain why.
Roof and wall-mounted fans
An external fan’s rattle can be heard outside. It’s often down to loose mounts or worn bearings.
The process
Everything the job needs comes with us, from protective sheeting to tools and access equipment. You only need to give us clear access and switch off what needs to be off. On site, the work takes a few hours for most repairs, longer for a full fan replacement. Evenings, weekends or a closed day all work for a site in a place like Cosham.
- First, you tell us the symptoms: noise, shaking, weak extraction or no power.
- Power to the fan is isolated before we open the housing.
- The impeller, bearings, belts or drive, motor and mounts are all inspected.
- You hear what’s wrong and what it will cost, with a fixed quote, before we go ahead.
- We fix or replace the fan, then test it running before we leave.
Preparing for the visit
- Mention any locked doors, roof access or ceiling voids
- Tell us about site rules, permits or sign-in
- Clear the space around the work
Get a fixed quote
The quickest way to a quote is to send pictures: 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.
Read more
How we price extract fan repair
Before we fix a price, we need to know a few things. We look at:
- What state the system is in
- The times the site is available
- The number of sites or systems
- Parking and loading at the site
You won’t find a price list here, because each job is priced on what it involves. Call for a fixed quote, and we’ll talk you through it.
Helping us quote
There’s no need for technical detail. It helps if you can send:
- The site address and the type of premises
- Any previous report or certificate
- Wide photos of the system and the area around it
- Close-ups of filters, grilles, hatches or access panels
Here’s what helps us quote: the address, the type of site and when it’s open, a few pictures and any previous report or certificate. Then ring 0345 646 2711, or email photos.
Common problems we fix in Cosham
Fans everywhere, Cosham included, live in a hard environment: heat, grease, steam and long running hours. Moisture can rust housings and fixings, and age catches up with every fan in the end.
The symptoms we’re asked about most are:
- Poor airflow at the canopy
- An extract fan that rattles or knocks
- A fan that keeps cutting out
- An old fan that needs replacing
If you run a kitchen close to Cosham station and the extract fan is getting noisy, a planned repair after closing beats a breakdown at the rush.
Before booking anyone
- Whether a written report and pictures are included
- If the quote is a fixed price or an estimate
- When they can work, and whether that’s outside your opening hours
- How areas they cannot reach will be recorded