Greater London · Air handling unit cleaning
Air handling unit cleaning in London, Greater London
One call covers AHU cleaning in London: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Dust-coated heating and cooling coils
- Dirty filters cutting the airflow
- Plant that has been serviced but not cleaned
How the visit works
There are three stages on the day: getting the area ready, doing the work and signing it off. Set-up means sheeting and making equipment safe, while signing off means the written report and pictures. Most of the time goes on the work itself, and that takes one overnight shift for many single units, with bigger plant phased. For a site in London, tell us about parking, loading and how we reach the roof or plant room.
- We survey the unit from photos or on site and agree what’s included.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- Drain trays are cleared and cleaned and the outlet checked.
- A TR19® certificate and photo report follow the clean.
Preparing for the visit
- Make sure someone can let us in and lock up afterwards
- Let us know about parking and loading
- Let us know how we reach the system, including roofs, risers and plant rooms
Get a fixed quote
To get a fixed quote, call us on 0345 646 2711 or use the quote form with the site type, your trading hours and a short description of the system. A few pictures and your last certificate or report help a lot. We typically come back within one working day.
Advice
About our AHU cleaning in London
We clean the parts of the unit where dirt and moisture gather: filters, coils, drain trays, fans and the internal panels. You get a TR19® certificate and a photo report showing the unit before and after. Typical jobs include dirty filters cutting the airflow and blocked condensate drains and slimy trays, across supply and extract fans, internal panels and heating and cooling coils.
Offices, schools and hotels in London stay in use while their ventilation is cleaned, so we work zone by zone, out of hours where necessary.
Our accreditations include CHAS, SafeContractor and ISO 9001, and we’re fully insured. We’re also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Where
- London (CR0, E14, CR4, SW11)
- Region
- Greater London
- Reporting
- Written report with photos
- Quotes
- Fixed quote, normally within a working day
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
AHU cleaning in London: local notes
Food Standards Agency data includes about 93 schools, colleges and universities, about 52 hospitals, care homes and childcare premises and about 102 hotels, B&Bs and guest houses in London and the streets around it, up to about 1.5 miles out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Many London buildings have had their ductwork altered through several fit-outs, so an inspection comes first. The nearest hospital to London is Surrey Dispensary, about within half a mile south-east. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
If you run a surgery, dental practice or care home near London, clean ventilation matters as much to you as to a hospital like Surrey Dispensary (about under half a mile south-east). If you manage a school such as Charles Dickens Primary School, ventilation cleaning is best booked for the holidays. If you manage offices or shops near Elephant & Castle station, their ventilation can be inspected and cleaned out of hours.
London is in Greater London. Across the CR0 area, we can carry out AHU cleaning at your premises. London is one of 764 places in Greater London where we work for AHU cleaning.
Our technicians cover all of CR0, E14, CR4 and SW11 for AHU cleaning and the streets around it. Local streets include Walcot Square, Surrey Square and Sutherland Square, all of which we cover for AHU cleaning. London sits on or near the A2 and A10, which makes travel easy for evening and night visits. Other places close to London include Walworth (1 mile south), Bermondsey (1 mile east), Camberwell (2 miles south), South Bermondsey (2 miles south-east) and Surrey Canal (2 miles south-east). Within a short drive, we also cover City of Westminster (3 miles west), Marylebone (3 miles north-west), Kensington (5 miles west), Walthamstow (7 miles north-east), Hampstead (5 miles north-west) and Ruislip (14 miles west). London is one of the larger places we cover in Greater London for AHU cleaning.
Local landmarks in London
In London, that means kitchens and buildings near Newington Gardens, Trinity Arms Public House and London School of Musical Theatre and the streets around them. Also close by are St Mary-at-Hill (0.9 miles north-east), Ark Globe Academy (less than half a mile south) and The BFI Reuben Library (1 mile north-west). There’s a railway station in London itself: Elephant & Castle station. Nearby you’ll also find Surrey Dispensary (under half a mile south-east) and Baynard's Castle (0.9 miles north). For a walk, there’s Bellenden Road Nature Garden and St. James's Park Lake.
How we price AHU cleaning
Sites vary more than people expect. What affects the quote:
- How big the system is
- Working hours and out-of-hours timing
- The condition we find in the survey
- Site rules, permits and inductions
The cost depends on how big the system is, what state it’s in and how easy it is to reach. We give you a fixed price before work begins, so you know where you stand.
Helping us quote
When you contact us, these details help:
- The paperwork from the last visit, if you have it
- The postcode and the type of business
- Problems your staff have spotted
- Wide pictures of the system and the area around it
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.
Looking after it afterwards
Simple habits between visits make a real difference. We recommend:
- Report musty smells from the vents straight away
- Make sure the unit’s access doors open easily
- File each AHU report in the maintenance log
- Stick to the filter change plan
Once the clean is done, we send a TR19® certificate and a report with before and after photos. They belong in the plant or maintenance log.
Check drain trays and condensate drains during routine maintenance. Catching a slow drain early stops standing water building up.
Leave it or put it right?
If people in a building in London complain about stuffy or smelly air, the AHU is worth looking at. A clean tackles the source instead of masking it. Records matter in London: insurers and inspectors may ask to see them.
Kitchens, offices, schools and hospitals are all priced the same way: how much there is, how we reach it, what state it’s in and when we can work. Call for a fixed quote and we will explain each part.
Why London businesses choose us
- Photo reports with every job
- Survey first, then a fixed quote
- Evenings, overnight and weekends, plus 24/7 emergency callout
- Accredited under CHAS and SafeContractor, with ISO 9001
Read what affects the cost and our accreditations.
What the work involves, part by part
Rooftop and plant room units
Many AHUs sit on roofs or in plant rooms with limited access. We plan safe access as part of the survey, before we quote.
Heating and cooling coils
Coil fins are close together and catch the dust the filters miss. We clean them with care so the fins are not damaged.
What AHU cleaning can’t fix
To be straight with you, some problems need a different fix:
- Breakdowns that need a mechanical engineer
- Leaking heating or cooling coils
- Dirty ducts beyond the unit itself
If in doubt, ring 0345 646 2711, or send details by email and we will say what we think.
Parts of the system we cover
- Drain trays
- Internal panels
- Heating and cooling coils
- Dampers and louvres
- Supply and extract fans
- Filter sections
Places near London
More services for London
Staff cleaning versus specialist work
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. Leave those to us.
When your team notices a problem between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We can diagnose it and quote.
London: your questions answered
Is parking a problem for work in London?
Parking and loading in London need planning, so tell us about bays, permits and building rules when you book. Much of our London work is done overnight, which helps.
Can you work in London outside opening hours?
Yes. We work evenings, overnight and at weekends. That way a site in London does not have to lose a day’s trading. When you call us on 0345 646 2711 or email us, mention when the site is quiet.
Will we get paperwork for the AHU clean?
Yes. A TR19® certificate and photo report are sent after the clean, with any faults we noticed.
How do you protect the area?
Protection goes down first: sheeting over floors, worktops and anything close to the work. The area is left tidy, with our waste taken away.
What happens to the waste?
We take it away at the end of the visit. During the work, it’s contained to keep the area clean.
Can you quote from photos?
Yes, for many jobs. Send wide shots, close-ups of any access panels and anything that worries you, and we normally come back within one working day. If photos aren’t enough, we’ll survey first.
What about areas you can’t get to?
They’re listed in the report, never skipped quietly. The report says which parts couldn’t be reached and why, along with a quote to put access in.
Do you repair air handling units?
We clean the unit and flag faults rather than repair them, with the details in the report.