Greater London · Air handling unit cleaning
Air handling unit cleaning in Hooley, Greater London
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for businesses, landlords and public buildings in Hooley. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Leaves and litter drawn into the unit
- Units that have only ever had filter changes
- Units needing a clean before a new tenant or handover
Looking after it afterwards
After the visit, a few habits help the work last:
- Store the TR19 paperwork where auditors can find it
- Stick to the filter change plan
- Keep inspection doors on the unit in good order
- Keep the area around the fresh air intake clear
Once the clean is done, we send a TR19® certificate and a report with before and after pictures. They belong in the plant or maintenance log.
Regular filter changes are the best protection an AHU has. Once filters clog, dirt starts getting past them.
How we handle AHU cleaning in Hooley
Heating and cooling coils trap dust that gets past the filters. A coated coil restricts airflow and makes the unit work harder. We clean coils with methods suited to their condition, taking care not to damage the fins. The work covers filter sections, heating and cooling coils and drain trays, and the jobs we see most are condensate trays that won’t empty and stale or musty smells from the ventilation.
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 Hooley, dust settles in the units and ducts year after year, which is what TR19® Air cleaning deals with.
Each visit ends with a written report and pictures, 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.
- Place
- Hooley (CR5, RH1)
- Region
- Greater London
- Records
- Written report with pictures
- Quotes
- Fixed quote, normally within a working day
- When we work
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
Places near Hooley
More services for Hooley
Do you need AHU cleaning in Hooley?
Mechanical servicing keeps a unit running, but it does not always include cleaning the inside. That means a unit can tick every service box and still be carrying years of dirt.
Clients usually contact us after spotting something like this:
- Debris and leaves in the fresh air intake
- Condensate trays that won’t empty
- Filters that are clogged or overdue
- Stale or musty smells from the ventilation
For schools like Coulsdon Sixth Form College, the holidays are the usual time to inspect and clean ventilation.
What your quote should include
- Whether a written report and photos are included
- Whether the figure could change on the day
- Whether they recommend a next date
- Whether the work can be done while the site is closed
Hooley: your questions answered
Can a school’s ventilation in Hooley be done out of term time?
Yes. Half-terms and the summer break are the natural time for school work. The FSA’s register shows about 3 schools and colleges with food registrations within roughly a mile and a half of Hooley. Booking early in the term gives the best choice of holiday dates.
Do you work overnight in Hooley?
Yes. We work evenings, overnight and at weekends. That way a site in Hooley doesn’t have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
Can you come out in an emergency?
Yes. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line, and we will advise on what to do next.
Are you insured?
Yes. We carry full insurance, and we’ve been trading since 2009.
How do you keep the site clean during the work?
We start with protection: floor sheeting and covers over nearby surfaces and equipment. The area is left tidy, with our waste taken away.
Will we get paperwork for the AHU clean?
Yes, both a certificate and a report with photos. The report also suggests when the unit should next be inspected.
What does TR19 mean?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It covers how systems are inspected, cleaned and checked, and it takes a risk-based approach.
How long will the unit be out of action?
The work takes one overnight shift for many single units, with bigger plant phased. Bigger units can be phased, and you can call 0345 646 2711, or send details by email to plan it.
Different parts, different methods
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.
Rooftop and plant room units
Smaller units in ceiling voids are part of the work as well. The space underneath is protected with sheeting first.
Why deal with it now?
Dirt left in an air handling unit does not stay in the unit. It’s carried through the ductwork and out of the grilles, so cleaning the ducts without the unit only goes so far. In a London building, a problem in a duct, damper or fan rarely stays in one unit.
When the work has to happen, how we reach it and how big the site is can all change the price. Each of those is built into the quote, and the price is fixed before we start.
Why Hooley businesses choose us
- A written report with photos after each visit
- Full insurance on every job
- Trading since 2009
- We diagnose before we treat
Take a look at our cost guide or how to check a contractor.
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.
Logging matters as much as cleaning. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, alongside our reports.
Hooley buildings and their air
Food Standards Agency records list about 3 schools, colleges and universities and about 3 hospitals, care homes and childcare premises registered as food businesses within about 1.5 miles of central Hooley. Busy, occupied buildings like these are where clean supply air matters most. Ventilation cleaning in London buildings is typically planned for evenings or weekends. Hooley’s nearest hospital, St Lawrence's Hospital, is about 2.5 miles east. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.
St Lawrence's Hospital, about 2.5 miles east, is the nearest hospital to Hooley, and healthcare sites of every size need their supply air kept clean.
Hooley is about 2 miles south-west of Coulsdon, in Greater London. Whatever kind of site you run in Hooley, AHU cleaning is something we can help with. We can work out of hours so the site keeps running. We cover 764 places across Greater London, large and small. London is in our area too, about 15 miles from Hooley.
Postcode districts we cover here for AHU cleaning: CR5 and RH1. Local streets include Church Lane Avenue, Church Lane Drive and Brighton Road, and we cover them all for AHU cleaning. Nearby, we also carry out AHU cleaning in Netherne on-the-Hill (1 mile east), Merstham (2 miles south), Mugswell (2 miles south-west), Gatton (2 miles south) and South Merstham (2 miles south). We also work in nearby towns such as London (15 miles north), City of Westminster (15 miles north), Kensington (15 miles north), Brompton (14 miles north), Stockwell (12 miles north) and Orpington (13 miles north-east).
Near you in Hooley
Around Hooley, our work takes us to kitchens and buildings near The White Hart pub and Shabden Park, among other places. For rail, the closest station is Chipstead station, roughly 1.4 miles north-west of the centre. Other landmarks nearby include East Surrey Museum (3.4 miles east) and St Lawrence's Hospital (2.5 miles east). The countryside around Hooley includes Colley Hill and South London Downs National Nature Reserve.
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, and the sign-off is a written report with photos. Most of the time goes on the work itself, which takes anything from half a day for one small unit to several shifts for a plant room full of them. Many London buildings have a managing agent, a security desk or a permit-to-work system, so tell us who to contact in Hooley.
- 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.
Before we arrive
- Plan for cooking equipment or plant to be off before we arrive
- Mention any locked doors, roof access or ceiling voids
- Mention any sign-in, permit or induction we need
Getting a quote
Getting a quote doesn’t take long. Call or email with a few details and you’ll usually have a fixed price within one working day. If we need to see the system first, we book a survey around your hours.
Advice
When something else is needed
An honest diagnosis matters more to us than a booking, so here’s what this work can’t put right:
- Leaking heating or cooling coils
- Controls and BMS settings that run the unit
- Airflow problems caused by the system’s design
If in doubt, ring 0345 646 2711 or drop us a line and we will say what we think before booking.
Parts of the system we cover
- Drain trays
- Dampers and louvres
- Supply and extract fans
- Internal panels
- Heating and cooling coils
- Filter sections