Greater London · Air handling unit cleaning
New Malden AHU cleaning
Air handling unit cleaning for businesses, landlords and public buildings in New Malden. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Stale or musty smells from the ventilation
- Filters that are clogged or overdue
- Debris and leaves in the fresh air intake
Why deal with it now?
Leave an AHU uncleaned and the dirt doesn’t stay put. It’s carried through the ductwork and out of the grilles, which is why the unit and the ducts are best cleaned together. It’s better booked as a planned job in New Malden than handled as an emergency.
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we’ll go through it with you.
Why choose Duct Doctor in New Malden
- CHAS and SafeContractor accredited, with ISO 9001
- Ventilation hygiene specialists since 2009
- Out-of-hours work and a 24/7 emergency line
- Each visit written up, with photos
Take a look at how cleaning jobs are priced and our accreditations.
AHU cleaning in New Malden
Coils are where a lot of the dirt ends up. A coated coil restricts airflow and makes the unit work harder. Coils are cleaned carefully, with methods chosen so the fins aren’t flattened. Common call-outs are for plant that has been serviced but not cleaned and rooms that smell stuffy when the system runs, on dampers and louvres, drain trays and filter sections.
London offices and flats often have ductwork added through successive refits, leaving sections that are hard to reach and seldom cleaned. An inspection first shows where cleaning is needed in a building in New Malden.
We have been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
- Location
- New Malden (KT3, KT1, SW20)
- Region
- Greater London
- Records
- Photo report after each visit
- Quote
- A fixed price before we start
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Ventilation in New Malden buildings
There are about 24 schools, colleges and universities and about 43 caring premises (care homes, nurseries and hospitals) on the FSA’s food hygiene register within about 1.5 miles of central New Malden. Busy, occupied buildings like these are where clean supply air matters most. New Malden’s nearest hospital, Kingston Hospital, is about 1.2 miles north-west. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. London plant rooms are often on roofs or in basements reached through occupied floors.
If you run an office near New Malden station, its supply ductwork can gather dust for years before anyone looks inside. Wherever a school like Christ Church New Malden CofE Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time. Hospitals such as Kingston Hospital (about 1.2 miles north-west) show how much a building can rely on clean ventilation, and smaller healthcare sites near New Malden are no different.
New Malden is about 3 miles south-west of Wimbledon, in Greater London. Every kind of commercial site in New Malden, we can take on AHU cleaning. We can work out of hours so trading is not interrupted. We cover 764 places across Greater London, from busy centres to quieter spots. Our London page covers sites nearby, about 10 miles away.
Postcode districts we cover here for AHU cleaning: KT3, KT1 and SW20. We cover sites on High Street, Ashcombe Square and Melrose Gardens and nearby roads. New Malden is on the B283, so it’s easy for us to get to for AHU cleaning. Close by, we work in Motspur Park (1 mile north-east), West Barnes (1 mile east), Norbiton (1 mile north-west), Coombe (1 mile north) and Raynes Park (1 mile east). Within a short drive, we also cover London (10 miles north-east), City of Westminster (9 miles north-east), Marylebone (9 miles north-east), Kensington (7 miles north), St Pancras (11 miles north-east) and Shoreditch (12 miles north-east).
What’s near New Malden
Locally, jobs take us to businesses close to Beverley Park, The Glasshouse pub and Holy Cross School and the streets around them. New Malden has its own railway station: New Malden station. Nearby you’ll also find Chessington Castle Hill (3.3 miles south) and Bentall Centre (1.9 miles west). Open spaces near New Malden include Rose Walk and Kingston Hill Road area.
In-house cleaning or a specialist?
Staff cleaning does not replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but hidden parts of the system still need specialist attention.
When your team notices a problem between visits, such as dripping grease, a noisy fan, a smell or a filter that will not come clean, they should report it rather than try to fix it. We can diagnose it and quote.
Towns and villages near New Malden
What else we do in New Malden
What affects the cost of AHU cleaning
Before we fix a price, we need to know a few things. We look at:
- What state the system is in
- Travel, parking and unloading
- A single visit or a regular plan
- Site rules, permits and inductions
When the work has to happen, how we reach it and how big the site is all affect the cost. We take each of them into account, and the price is fixed before any work starts.
Helping us quote
What to send for a quote:
- The times we could work without disrupting the site
- Wide pictures of the system and the area around it
- Detail shots of panels, filters and grilles
- Any symptoms, from odd noises to smells or leaks
For a fixed quote, call 0345 646 2711 or drop us a line and tell us the type of site, your opening hours and roughly what the system looks like. Photos and the last report, if you have one, make the quote quicker. We normally come back within one working day.
When something else is needed
An honest diagnosis matters more to us than a booking, so here’s what AHU cleaning won’t do:
- Breakdowns that need a mechanical engineer
- Dirty ducts beyond the unit itself
- Controls and BMS settings that run the unit
If in doubt, ring 0345 646 2711 or email us and we will say what we think.
Parts of the system we cover
- Drain trays
- Heating and cooling coils
- Dampers and louvres
- Internal panels
- Filter sections
- Supply and extract fans
What happens on the day
Your staff don’t need to do much on the day. A contact on site lets us in at the agreed time and points us to the system, and we take it from there. Before we leave, the area is tidied and the paperwork follows. Night and weekend working is normal for us in London, and a site in New Malden is no exception.
- The survey covers the unit, its access and how it can be shut down.
- The area is protected and the unit made safe.
- Dirt and debris are removed from each section.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
Getting ready for the visit
- Allow time for equipment near the work to be turned off and cool down
- Mention any locked doors, roof access or ceiling voids
- Name a contact who can let us in at the agreed time
Get a fixed quote
The quickest way to a quote is to send pictures: the system from a couple of angles, plus any access panels or hatches. 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 the job changes from site to site
Fans and fan sections
The fan moves all of the unit’s air, so dirt on it gets spread around. We clean the impeller, housing and surrounding section.
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.
Landlords, agents and facilities managers
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements, and we’ll send a fixed quote.
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, which may be the employer, owner, landlord, FM or managing agent. With shared responsibility, good records help everyone.
New Malden questions
Do you do school ventilation cleaning in New Malden in the summer holidays?
Yes. The holidays are the usual time for school work. Food Standards Agency records list about 24 schools, colleges and universities with registered kitchens within about a mile and a half of New Malden. You can call 0345 646 2711 or drop us a line with the dates the site is empty.
Can the work in New Malden be done at night or at weekends?
Yes, we can come after you close and finish before you open. The work in New Malden can fit around your hours. Let us know the hours you’re closed and we will book within them.
When should our AHU next be cleaned?
That is set by inspection, in line with TR19® Air. Units in heavy use or in sensitive buildings may need attention more often.
Can you set up regular visits?
Yes. Scheduled maintenance plans are part of what we do, set at the interval the system needs. Each report recommends when the next visit should be.
How do you keep the site clean during the work?
Protection goes down first: floor sheeting and covers over nearby surfaces and equipment. We tidy up and take our waste away before we leave.
What types of premises do you cover?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, plus food production and leisure sites.
Can one contract cover all our sites?
Yes. We work across South East England and London, so we can schedule a run of sites as one programme. Each site gets its own report and pictures.
How long will the unit be out of action?
Typically the clean takes a single shift for a typical unit, longer for large or heavily soiled ones. We plan the shutdown around that, out of hours if needed.