Greater London · Air handling unit cleaning
AHU Cleaning in Cheam
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for businesses, landlords and public buildings in Cheam. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Air handling units due a clean after building work
- Leaves and litter drawn into the unit
- Dirty filters cutting the airflow
Cheam questions
Is parking a problem for work in Cheam?
A loading bay, a visitor permit or off-street space near the site in Cheam makes the visit easier to plan. Night visits tend to make loading easier on London streets.
Do you clean school ventilation in Cheam in the holidays?
Yes, out-of-term visits are normal for schools. The FSA’s register shows about 15 schools and colleges with food registrations within roughly a mile and a half of Cheam. Tell us your holiday dates and we’ll book the visit for when the site is empty.
Can you clean the AHU out of hours?
Yes. Evening, overnight and weekend work is all possible, so the building keeps running in the day.
Do you offer maintenance contracts?
Yes. We run scheduled maintenance contracts, with visits at the interval your system needs. The report from each visit recommends the next date.
Which sectors do you work in?
All kinds of commercial and public premises: from restaurants, pubs and hotels to schools, hospitals, care homes, offices, shops and food production sites. Work is timed around how each site runs.
Will we get paperwork for the AHU clean?
Yes. You receive a certificate and a report showing each section before and after, with any faults we noticed.
When should our AHU next be cleaned?
That’s set by inspection, in line with TR19® Air. Units in heavy use or in sensitive buildings may need attention more often.
Where does the waste go?
Waste is contained during the work and removed when we leave, from grease and debris to used cleaning water. We do not leave it behind.
AHU cleaning for kitchens and businesses in Cheam
Our AHU cleaning covers sites in Cheam and the rest of Greater London, in buildings such as offices, schools, healthcare sites and shops. The work is timed around when the system can be switched off, including evenings, nights and weekends. The work covers supply and extract fans, internal panels and heating and cooling coils, and people most often call us about air handling units due a clean after building work and plant that has been serviced but not cleaned.
London offices and flats often have ductwork added through successive refits, leaving sections that are hard to reach and seldom cleaned. In Cheam, as elsewhere, cleaning starts with an inspection of what’s there.
A written report with pictures follows every visit, so you have a record of what was done and when. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Where
- Cheam (SM2, SM3, SM1)
- Wider area
- Greater London
- Records
- Photo report after each visit
- Quote
- A fixed price before we start
- Working hours
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Towns and villages near Cheam
Also in Cheam
AHU cleaning around Cheam
Food Standards Agency data includes about 15 schools, colleges and universities and about 58 hospitals, care homes and childcare premises in Cheam and the streets around it, up to about 1.5 miles out. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. About 0.8 miles east of Cheam is Sutton Hospital, the nearest hospital. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. London plant rooms are often on roofs or in basements reached through occupied floors.
If you run an office near Cheam station, its supply ductwork can gather dust for years before anyone looks inside. Hospitals such as Sutton Hospital (about 0.8 miles east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Cheam are no different. Classrooms and halls at schools such as Glaisdale School are easiest to work in when pupils are away.
Cheam is about 1 mile south-west of Sutton, in Greater London. Cheam gets the same approach as every site we work on: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with pictures. Across Greater London, we cover 764 places, Cheam among them. London is in our area too, about 12 miles from Cheam.
Here we cover the SM2, SM3 and SM1 postcode area for AHU cleaning. AHU cleaning is available to premises on Wray Road, York Road and The Avenue and nearby roads. We also cover Belmont (1 mile south-east), Cuddington (1 mile north-west), North Looe (1 mile south-west), North Cheam (2 miles north) and Nork (2 miles south). Within a short drive, we also cover London (12 miles north-east), City of Westminster (12 miles north), Marylebone (12 miles north), Kensington (11 miles north), St Pancras (13 miles north) and Shoreditch (14 miles north-east).
Around Cheam
Locally, jobs take us to businesses close to Avenue Primary Academy, Howell Hill and Overton Grange School and the streets around them. The closest station to Cheam is Cheam station, roughly 0.6 miles north. Well-known places in the area include The Ashley Centre (2.7 miles south-west) and Chessington Castle Hill (3.5 miles west). For a walk, there’s Duppas Hill and Belmont Pastures.
When something else is needed
Not every problem is solved by AHU cleaning, and we’ll tell you before work begins. It will not put right:
- Breakdowns that need a mechanical engineer
- Ventilation that was badly designed in the first place
- The supply and extract ducts, quoted separately
Not sure which it is? You can call us on 0345 646 2711 or email us and we’ll tell you honestly before you book.
What we work on in Cheam
- Drain trays
- Heating and cooling coils
- Dampers and louvres
- Filter sections
- Internal panels
- Supply and extract fans
The process
We work around your opening hours, not the other way round. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. When the team arrives, the work area is protected and the relevant equipment is switched off to cool, and the work takes a single shift for a typical unit, longer for large or heavily soiled ones. Loading bays, visitor permits and roof access are the first things we ask about for a site in Cheam.
- We agree a shutdown window that suits the building.
- We take before photos of each section of the unit.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- We take after photos and issue the certificate and report.
Preparing for the visit
- Mention any locked doors, roof access or ceiling voids
- Agree a time when the area can be out of use
- Move anything stored near the system
Getting a quote
The quickest way to a quote is to send photos: the system from a couple of angles, plus any access panels or hatches. Add the site type and your opening hours, and we can price many jobs without a visit.
Read more
What your team can do, and what needs us
In-house cleaning and specialist cleaning do different jobs. Wiping filters daily and washing them weekly keeps the visible parts in order, but they do not reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We will take a look and send you a fixed quote.
What the work involves, part by part
Drain trays
The drain tray collects water from the cooling coil. We clear standing water, clean out slime and check the outlet is draining.
Filters
What’s on the filters is a good clue to what’s further in. They’re photographed before and after for your records.
Keeping the system healthy
Good habits slow the build-up between visits. Our tips:
- Clear leaves and litter away from the intake
- Keep inspection doors on the unit in good order
- Store the TR19 paperwork where auditors can find it
- Make sure condensate is draining away
When we have closed the unit up, it can be restarted with your site team. Check the drain tray is emptying over the first few days to confirm water is draining away.
Have the unit inspected regularly, in line with the risk-based approach of TR19® Air instead of leaving it to guesswork.
Managing agents and facilities teams in Cheam
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. With shared responsibility, good records help everyone.
For anyone managing more than one site, we can plan visits across the whole estate and price them together. Every building has its own written report, so each one has its own record.
Why it’s worth doing now in Cheam
A clean unit feeds cleaner air into the ductwork, so the whole system stays cleaner for longer. It also means the next inspection has less to find. Choosing the date yourself beats having a fault choose it for you.
A single site or a whole portfolio, we price it on the same basis: the work involved, the access and the timing. You will have a fixed price before any work starts.
Why us?
- CHAS, SafeContractor and ISO 9001
- A written report with pictures after each visit
- In business since 2009
- Fixed quotes, typically within one working day
Read our cost guide or how to check a contractor.