Greater London · Air handling unit cleaning
AHU Cleaning in Colliers Wood
Air handling unit cleaning for Colliers Wood, with a survey first and a report with photos at the end. Call for a fixed quote.
- Filters that are clogged or overdue
- Odours coming through the supply air
- Debris and leaves in the fresh air intake
AHU cleaning in Colliers Wood: local notes
The FSA’s food hygiene register lists about 37 schools, colleges and universities, about 66 hospitals, care homes and childcare premises and about 6 hotels, B&Bs and guest houses with registered kitchens or food service within roughly a mile and a half of the centre of Colliers Wood. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. Colliers Wood’s nearest hospital, Grove Hospital, is about 0.6 miles north. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. In London, ventilation plant is often on the roof or below ground, so the work is typically done out of hours.
School buildings such as Sellincourt Primary School are normally done in the holidays, so classrooms are not disturbed. Healthcare ventilation, from large hospitals like Grove Hospital (about 0.6 miles north) to small clinics, depends on clean filters, coils and ducts.
Colliers Wood is about 5 miles south of Brompton, in Greater London. For AHU cleaning in and around Colliers Wood, please call 0345 646 2711 or drop us a line for a fixed quote. Our area covers London and the South East, including Colliers Wood. Our Greater London coverage runs to 764 places, and Colliers Wood is one of them. For sites nearby, see our London page (6 miles or so).
Here we cover the SW17, SW19 and CR4 postcode area for AHU cleaning. If you need AHU cleaning at premises on Acre Road, Boyd Road and Park Road or anywhere close by, our technicians can take on the work. If your site is just outside Colliers Wood, we cover Tooting (1 mile north), Tooting Bec (1 mile north), Merton Abbey (1 mile south-west), Furzedown (1 mile north-east) and Eastfields (1 mile south-east). Further out, we also cover London (6 miles north-east), City of Westminster (7 miles north), Marylebone (7 miles north), Kensington (6 miles north), St Pancras (8 miles north) and Shoreditch (8 miles north-east).
Near you in Colliers Wood
Around Colliers Wood, our work takes us to kitchens and buildings near Figge's Marsh, Ensham School and The Royal Standard pub, among other places. There’s a railway station in Colliers Wood itself: Tooting station. A little further out are Grove Hospital (0.6 miles north) and Wandle Industrial Museum (1.2 miles south). For a walk, there’s Henman Hill and Myrna Close.
About our AHU cleaning in Colliers Wood
If the units serving a building in Colliers Wood have only had filter changes for years, there may be dirt on the coils, fan and casing that nobody has looked at. A full AHU clean takes in the whole unit. If you are dealing with plant that needs cleaning after a refit and dirty filters cutting the airflow, we can put it right, from drain trays, dampers and louvres and heating and cooling coils onwards.
Across London, offices, hotels, schools and healthcare buildings rely on mechanical ventilation, much of it supplied through air handling units on roofs or in basements. For a building in Colliers Wood, dust settles in the units and ducts year after year, which is what TR19® Air cleaning deals with.
Think of the report as the system’s health record: a dated account with pictures of everything we did. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal and sits alongside the report.
- Where
- Colliers Wood (SW17, SW19, CR4)
- Region
- Greater London
- Records
- Photo report after every visit
- Quotes
- A fixed price before any work starts
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
Multi-site and managed buildings
Keeping records across a portfolio is half the battle. Each visit produces a dated report with photos, ready to show insurers, fire officers or EHOs.
For anyone managing more than one site, we can schedule visits across all of them on one quote. Every building has its own written report, so records stay tidy.
What happens if it’s left?
Tenants, auditors and owners may want proof that the air handling plant is kept clean. A TR19® certificate and photo report give you that, ready to show anyone who asks. London buildings are shared, so a fire or failure in one system can reach the neighbours above and beside you.
A single site or a whole portfolio, the quote is built the same way: the work involved, the access and the timing. The price is fixed before work begins.
Why book with us
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Accredited under CHAS and SafeContractor, with ISO 9001
- Fully insured
- One number for every site across the South East and London
Take a look at our cost guide or our accreditations and certificates.
Colliers Wood: your questions answered
Can a school’s ventilation in Colliers Wood be done out of term time?
Yes, out-of-term visits are normal for schools. Food Standards Agency records list about 37 schools, colleges and universities with registered kitchens within about a mile and a half of Colliers Wood. Tell us your holiday dates and we will book the visit for when the site is empty.
Does London parking affect a job in Colliers Wood?
Tell us where a van can stop near your site in Colliers Wood, and about any building rules on loading. Where restrictions apply in the day, an evening or overnight visit usually gets round them.
Can you come out in an emergency?
Yes. Our emergency line runs 24/7 for anything that cannot wait until a planned visit. Ring any time and tell us what’s happened.
What’s included in an AHU clean?
Filters, coils, drain trays, the fan and the internal surfaces are all covered. Filters are cleaned or changed as agreed in the quote.
How long does an AHU clean take?
The work takes one overnight shift for many single units, with bigger plant phased. Bigger units can be phased, and you can give us a ring on 0345 646 2711 or drop us a line to plan it.
Does the AHU have to be shut down for cleaning?
Yes. The fan must be stopped and the unit isolated, and we time the work to suit the site.
What accreditations do you have?
Our accreditations are 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.
Do you offer maintenance contracts?
Yes. Tell us what you have and how it’s used, and we’ll suggest a schedule and quote for it.
The process
We turn up at the time agreed with you, which is often after service, overnight or at a weekend. Equipment that has to be off is switched off and allowed to cool first, and floors and nearby surfaces are sheeted. The work itself takes one overnight shift for many single units, with bigger plant phased. Getting kit into a London building takes planning, so let us know where we can load and park in Colliers Wood.
- First we agree when the unit can be switched off, including evenings or weekends.
- Before cleaning, each section is photographed.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- After pictures are taken and the certificate issued.
Getting ready for the visit
- Make sure equipment near the work can be switched off and left to cool
- Find the previous report, if there is one
- Tell us about site rules, permits or sign-in
How to get a quote
To help us quote: the address, the type of site and when it’s open, a few pictures and the last certificate or report, if there is one. Once you have those, call 0345 646 2711 or email us.
Read more
Places near Colliers Wood
More services for Colliers Wood
What the work involves, part by part
Internal casing and panels
Loose or damaged linings inside a unit can break up into the airstream. Anything like that is recorded with photos.
Rooftop and plant room units
Units outside are exposed to weather and windblown debris. The intake section gets particular attention.
Keeping the system healthy
Good habits slow the build-up between visits. Our tips:
- Diary the inspection date recommended in the report
- Don’t store bins or materials near the intake
- Report musty smells from the vents right away
- Watch for drips or damp patches near the plant
We recommend when the unit should next be inspected or cleaned, based on what we found. Under TR19® Air the timing is set by inspection and risk, not a fixed calendar.
Regular inspection under TR19® Air shows when cleaning is due, rather than waiting for a problem.
What affects the cost of AHU cleaning
Sites vary more than people expect. The main factors:
- Where the site is and how we reach it
- Working hours and out-of-hours timing
- Whether several sites go on one quote
- One-off work versus a regular cycle
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 go through it with you.
What to send for a quote
Before you ask for a quote, gather:
- Where the site is and what kind of site it is
- Problems your staff have spotted
- Photos showing the whole system and its surroundings
- How we’d reach plant on a roof or in a plant room
Want a quote for AHU cleaning? Please call us on 0345 646 2711 or drop us a line and tell us about the site. We’ll explain what we’d do and send a fixed quote before you commit to anything.
When to call us in Colliers Wood
Mechanical servicing keeps a unit running, but it doesn’t always include cleaning the inside. That means a unit can tick every service box and still be carrying years of dirt.
Signs it’s time to call us include:
- Blocked condensate drains and slimy trays
- Air handling units due a clean after building work
- Air handling units with blocked filters
- Debris and leaves in the fresh air intake
Workplaces around Tooting station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts.
Questions to ask before booking
- Whether inaccessible sections are listed on the report
- Exactly which parts of the system are covered
- Whether they recommend a next date
- Whether the work can be done while the site is closed