Greater London · Air handling unit cleaning
Air handling unit cleaning in Charlton, Greater London
One call covers air handling unit cleaning in Charlton: survey, fixed quote, work and sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Coils clogged with dust and debris
- Plant that needs cleaning after a refit
- Air handling units with blocked filters
Common problems we fix in Charlton
An overdue filter loads up with dirt, which cuts the airflow and can let air slip round the filter. After that, the coils and fan collect what the filter should have caught.
Common reasons sites call us are:
- Air handling units never cleaned inside
- Plant that needs cleaning after a refit
- Filters that are clogged or overdue
- Dust-coated heating and cooling coils
If you run an office near Charlton station, its supply ductwork can gather dust for years before anyone looks inside.
Questions to ask before booking
- Whether a written report and pictures are included
- Whether inaccessible sections are listed on the report
- Proof of insurance
- Whether the price is fixed
AHU cleaning in Charlton, done properly
All the building’s air passes through the fan, so dirt on the impeller and housing gets spread around. Fan, housing and the surrounding panels are cleaned as part of the job, once the unit has been shut down and isolated. The work covers dampers and louvres, filter sections and drain trays, and the jobs we see most are leaves and litter drawn into the unit and air handling units never cleaned inside.
Many London buildings have had their ventilation extended and altered through several fit-outs, leaving sections that are hard to reach and seldom cleaned. An inspection first shows where cleaning is needed in a building in Charlton.
The sign-off is always in writing: a written report, dated and illustrated with photos, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. It shows what was done and what, if anything, couldn’t be reached.
- Where
- Charlton (SE7, SE18)
- Wider area
- Greater London
- Reporting
- Report and pictures after the visit
- Quote
- Fixed quote, usually within a working day
- When we work
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
Why deal with it now?
A light clean now is simpler than a heavy one later. Leave it for years and dirt bakes onto coils and casings, particularly where damp has made it stick. In Charlton, as across London, ductwork often passes through shared risers and other people’s space.
A single site or a whole portfolio, the quote is built the same way: what needs doing, how we get to it and when. The price is fixed before we start.
Why choose Duct Doctor in Charlton
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
- CHAS and SafeContractor accredited, with ISO 9001
- Each visit written up, with photos
- We’re fully insured
Take a look at what affects the cost or our accreditations.
Your questions about AHU cleaning in Charlton
Do you do school ventilation cleaning in Charlton in the summer holidays?
Yes, holiday work suits schools best. The FSA’s register shows about 41 schools and colleges with food registrations within roughly a mile and a half of Charlton. Tell us your holiday dates and we’ll book the visit for when the site is empty.
Can you work in Charlton outside opening hours?
Yes, out-of-hours work is a big part of what we do. It means the site in Charlton keeps running as normal. Just phone us on 0345 646 2711, or email photos with your opening times and we will plan around them.
Are you fully insured?
Yes. We carry full insurance, and we’ve been trading since 2009.
Are you accredited?
Our accreditations are CHAS, SafeContractor and ISO 9001, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Do you repair air handling units?
Mechanical repairs to the unit are for your HVAC maintenance contractor. We will flag anything we notice during the clean.
What do you do with what you remove?
It’s contained and taken away. We collect grease, debris and waste water as we go, so it does not spread.
Is Charlton in your area?
Yes. We cover Charlton and the rest of Greater London, within our South East and London area. To book, call 0345 646 2711 or use the quote form.
Can you look after several sites?
Yes. Our area covers London and the South East, so we can schedule a run of sites on one programme. Each site gets its own report and photos.
How the visit works
We work around your opening hours, not the other way round. We book the visit for a time the area is closed, whether that is an evening, overnight or a weekend. Once we’re in, the area is sheeted and anything that has to be off is turned off and cooled, and the work takes from a few hours for a compact unit to a day or more for a large one. In a London area like Charlton, parking, loading and building access are planned before the day of the work.
- We look at the unit and the plant area during the survey.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- We clean the coils and clear the tray and drain.
- We close every panel, hand the unit back and send the report and certificate.
How to prepare
- Tell us about site rules, permits or sign-in
- Let us know about parking and loading
- Move anything stored near the system
Ask for a quote
There’s no standard price list, because no two systems are the same. We look at your system first, from photos or on a visit, and then give you a fixed quote. To start, call us on 0345 646 2711, or send details by email.
Advice
AHU cleaning around Charlton
There are about 41 schools, colleges and universities, about 44 caring premises (care homes, nurseries and hospitals) and about 4 hotels and B&Bs on the FSA’s food hygiene register in and around Charlton, up to about a mile and a half out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Ventilation cleaning in London buildings is normally planned for evenings or weekends. The nearest hospital to Charlton is British Hospital for Mothers and Babies, about 0.5 miles east. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
Wherever a school like Thorntree Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time. If you run a surgery, dental practice or care home near Charlton, clean ventilation matters as much to you as to a hospital like British Hospital for Mothers and Babies (about 0.5 miles east).
Charlton is about 2 miles west of Plumstead, in Greater London. Across the SE7 area, we can take on AHU cleaning. Our area takes in 764 places across Greater London, from busy centres to quieter spots. We also work in London, around 6 miles away.
All of SE7 and SE18 is within our area for AHU cleaning, from the main roads to the quietest streets. Whether your site is on Floyd Road, Guild Road and Priolo Road or anywhere close by, we can help. Other places close to Charlton include New Charlton (1 mile north-west), Westcombe Park (1 mile west), Woolwich (1 mile east), Vanbrugh Park Estate (1 mile south-west) and Kidbrooke (2 miles south). Within a short drive, we also cover London (6 miles west), City of Westminster (8 miles west), Marylebone (8 miles west), Kensington (10 miles west), St Pancras (7 miles west) and Shoreditch (6 miles north-west).
Around Charlton
Locally, jobs take us to businesses close to Charlton Park, Wildwood Montessori School and Royal Greenwich Trust School, among other places. There’s a railway station in Charlton itself: Charlton station. Other landmarks nearby include British Hospital for Mothers and Babies (0.5 miles east) and Gallions Reach Shopping Park (2.3 miles north-east). Green spaces nearby include Gilbert's Pit.
What AHU cleaning cannot fix
We’d rather tell you now than book work that will not help, so here are the limits:
- Ventilation that was badly designed in the first place
- Faulty motors, drives or bearings
- Building management system faults
If in doubt, call 0345 646 2711 or send us an email and we’ll say what we think.
Where we work
- Supply and extract fans
- Heating and cooling coils
- Dampers and louvres
- Drain trays
- Internal panels
- Filter sections
What your team can do, and what needs us
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. The inside of ducts and units needs a specialist.
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks shows an inspector that the system is looked after between visits, alongside our reports.
Looking after it afterwards
Think of this as the after-treatment advice, in brief:
- Keep the certificate and photo report with the plant records
- Change filters on schedule and log each change
- Note any water around the unit or leaks below it
- Report stiff or damaged access doors
We recommend when the unit should next be inspected or cleaned, based on what we found. TR19® Air is risk-based, so the interval depends on the unit and how the building is used.
Check drain trays and condensate drains during routine maintenance. Catching a slow drain early stops standing water building up.
Multi-site and managed buildings
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
When the building owner and the occupier are different, it’s worth checking the lease for who maintains the systems. We can quote either party and send the paperwork to whoever needs it.