Greater London · Air handling unit cleaning
Feltham AHU cleaning
AHU cleaning in Feltham from ventilation hygiene specialists trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Filters that are clogged or overdue
- Intake sections clogged with outdoor debris
- Dust-coated heating and cooling coils
What the work involves, part by part
Heating and cooling coils
Cooling coils stay damp in use, so dirt on them can turn sticky. The coil and its drain tray are cleaned as one job.
Fans and fan sections
Every bit of air passes the fan, so a dirty fan sends dirt downstream. The impeller, its housing and the fan chamber are cleaned.
AHU cleaning for kitchens and businesses in Feltham
We clean the parts of the unit where dirt and moisture gather: the filter section, heating and cooling coils, drain trays, fan and casing. You get a TR19® certificate and a photo report showing the unit before and after. We’re often asked to deal with plant that has been serviced but not cleaned and stale or musty smells from the ventilation, on dampers and louvres, internal panels and heating and cooling coils.
London offices and flats often have ductwork added through successive refits, with old runs left behind that are hard to reach. In Feltham, as elsewhere, cleaning starts with an inspection of what’s there.
Insurers, fire officers and environmental health officers all look at records. So every job comes with a written report and pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Location
- Feltham (TW14, TW13)
- Wider area
- Greater London
- Paperwork
- Photo report after every visit
- Quote
- A fixed price before any work starts
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
What affects the quote in Feltham
The price is fixed before any work begins. It takes into account:
- Travel, parking and unloading
- A single visit or a regular plan
- The condition we find in the survey
- Any permits to work or inductions
Every site is different, 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.
Asking for a quote
Many jobs can be priced from photos and some basics. Send what you can of the following:
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Problems your staff have spotted
- The times we could work without disrupting the site
- Photos showing the whole system and its surroundings
Some systems can be priced from photos; others need a survey. Big or complicated sites, and systems that are hard to see in photos, get a survey first. Either way, the quote is fixed before any work is booked.
Aftercare tips
Think of this as the after-treatment advice, short and simple:
- Watch for drips or damp patches near the plant
- Keep the area around the fresh air intake clear
- Keep the certificate and photo report with the plant records
- Change filters on schedule and log each change
Keep filter changes on schedule between cleans, as that does more than anything to keep the unit clean. Log every change so it’s easy to see when the next is due.
Make sure access doors and panels on the unit open easily. If a section is hard to get into, it tends not to get checked.
What AHU cleaning can’t fix
In fairness, there are a few things this work will not fix:
- Coils that are corroded or leaking and need replacing
- A system that is undersized for the building
- The supply and extract ducts, quoted separately
If you are not sure, just ring 0345 646 2711, or send details by email and we will give you a straight answer.
What the work covers
- Drain trays
- Dampers and louvres
- Heating and cooling coils
- Internal panels
- Filter sections
- Supply and extract fans
How the visit works
We turn up at the time agreed with you, which is often after service, overnight or at a weekend. Anything that needs to be off for the work is switched off and left to cool before we start, and the area around the work is covered and protected. The work itself takes one overnight shift for many single units, with bigger plant phased. Managed blocks in London often need contractors booked in ahead, and we’re happy to deal with the agent directly for a site in Feltham.
- We agree a shutdown window that suits the building.
- Before cleaning, each section is photographed.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- We finish with the fan section and the drain tray.
- After photos are taken and the certificate issued.
Before we arrive
- Make sure someone can let us in and lock up afterwards
- Mention any sign-in, permit or induction we need
- Tell us the best time to work, such as after service or at a weekend
How to get a quote
Getting a quote doesn’t take long. Send a few details and pictures, and we typically reply with a fixed quote within one working day. If we need to see the system first, we book a survey around your hours.
Read more
Staff cleaning versus specialist work
When your team notices a problem between visits, like drips, unusual noise, smells or damaged filters, they should report it rather than try to fix it. We’ll take a look and give you a fixed quote.
Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. Inside the ducts, risers and fan is specialist work, which is where we come in.
Why deal with it now?
Cleaning a unit while it only has light dust is quick. Years of build-up make the job longer and harder, especially where there’s been moisture. Choosing the date yourself beats having a fault choose it for you.
One small site or a whole estate, we price it on the same basis: what needs doing, how we get to it and when. You will have a fixed price before work begins.
Why choose Duct Doctor in Feltham
- CHAS and SafeContractor accredited, with ISO 9001
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
- Out-of-hours work and a 24/7 emergency line
- A single point of contact for sites across the South East and London
See our cost guide and our accreditations.
Feltham buildings and their air
There are about 23 schools, colleges and universities, about 23 care, childcare and hospital premises and about 4 hotels and guest houses on the FSA’s food hygiene register in and around Feltham, up to about a mile and a half out. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. Feltham’s nearest hospital, Hounslow Hospital, is about 2.3 miles north-east. Clean air matters most where people are unwell, and that is as true in a care home as in a hospital. In London, ventilation plant is often on the roof or below ground, so the work is typically done out of hours.
If you manage shops or offices close to Feltham station, a TR19® Air inspection shows whether the ductwork needs cleaning. If you run a surgery, dental practice or care home near Feltham, clean ventilation matters as much to you as to a hospital like Hounslow Hospital (about 2.3 miles north-east). Classrooms and halls at schools such as St Lawrence Catholic Primary School are easiest to work in when pupils are away.
Feltham is about 6 miles south-west of Ealing, in Greater London. Feltham gets the same approach as every site we work on: a survey first, a fixed quote, work timed around your hours and a report with pictures. Our Greater London coverage runs to 764 places, and Feltham is one of them. You can also see our page for London, about 14 miles away.
We cover every part of TW14 and TW13 for AHU cleaning and the roads nearby. We cover sites on High Street, Railway Terrace and Sandycombe Road and nearby roads. Feltham sits on or near the A244 and B377, so getting to you is simple for evening and night visits. Neighbouring places we cover for AHU cleaning include Bedfont (1 mile west), Hounslow (1 mile south-west), Hatton (1 mile north), Ashford Common (2 miles south-west) and Cranford (2 miles north). Within a short drive, we also cover London (14 miles east), City of Westminster (12 miles east), Marylebone (12 miles north-east), Kensington (10 miles east), St Pancras (14 miles north-east) and Shoreditch (15 miles east).
Landmarks near Feltham
Locally, jobs take us to businesses close to Hounslow Heath, Moon On The Square pub and Rivers Academy West London, among other places. There’s a railway station in Feltham itself: Feltham station. Nearby you will also find Hounslow Hospital (2.3 miles north-east) and Kempton Steam Museum (1.6 miles south). Open spaces near Feltham include Richmond Hill and Pevensey Road Nature Reserve.
Also in Feltham
Feltham questions
Do you clean school ventilation in Feltham in the holidays?
Yes. The holidays are the usual time for school work. With about 23 schools and colleges on the FSA’s register within roughly a mile and a half of Feltham, it pays to plan holiday dates ahead. Booking early in the term gives the best choice of holiday dates.
Do you work overnight in Feltham?
Yes, evening, overnight and weekend work is normal for us. It means the site in Feltham keeps running as normal. Just call us on 0345 646 2711 or email us with your opening times and we’ll plan around them.
Can you clean the ducts connected to the AHU?
Yes. Ventilation ductwork cleaning to TR19® Air is part of what we do. It’s often worth doing both at once, and we can survey both on the same visit.
Do you work in Feltham?
Yes. We cover Feltham and across Greater London, as part of our work across South East England and London. For a fixed quote, call us on 0345 646 2711 or send us an email.
What accreditations do you have?
We hold CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Will the ventilation be off while you clean?
Yes. The fan must be stopped and the unit isolated, and we time the work to suit the site.
Do you give a certificate after the clean?
Yes. A TR19® certificate and photo report are sent after the clean, with any faults we noticed.
How often do AHUs need cleaning?
It depends on the unit, the filters and how the building is used. Regular inspection shows when it’s due, and the report recommends a next date.