Greater London · Air handling unit cleaning
AHU Cleaning in Chessington
AHU cleaning across Chessington and nearby, booked around your opening hours and finished with a written report and pictures.
- Fan sections that haven’t been cleaned in years
- Drain trays holding standing water
- Plant that needs cleaning after a refit
About our AHU cleaning in Chessington
We clean air handling units for buildings in Chessington and across Greater London, working to TR19® Air, in buildings such as offices, schools, healthcare sites and shops. The work is timed around when the system can be switched off, including evenings, nights and weekends. If you have odours coming through the supply air and dust-coated heating and cooling coils, we can put it right, from drain trays, heating and cooling coils and filter sections onwards.
London buildings often depend on air handling units in plant rooms or on the roof to supply fresh air. For a building in Chessington, dust settles in the units and ducts year after year.
Accreditations are easy to claim and worth checking. We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, with full insurance on top.
- Where
- Chessington (KT9, KT19, KT6)
- Wider area
- Greater London
- Reporting
- Written report with photos
- Quote
- A fixed quote up front
- Hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Checked
- 30 October 2026
What affects the quote in Chessington
Your quote is based on your site. We consider:
- The condition of the system
- How big the system is
- How many systems or sites are involved
- Parking and loading at the site
You won’t find a price list here, because each job is priced on what it involves. For a fixed quote, phone us on 0345 646 2711 or use the quote form, and we will talk you through it.
Asking for a quote
A few details help us quote accurately. With your enquiry, please include:
- Any previous report or certificate
- Where the site is and what kind of site it is
- Detail shots of panels, filters and grilles
- A few general shots of the system
Quotes are quick. Send a few details and pictures, and we typically reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.
What we do, step by step
Everything the job needs comes with us, including protection sheets, the right tools and access kit. You only need to give us clear access and switch off what needs to be off. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. A name and number for whoever controls access to the building in Chessington saves time on the night.
- We look at the unit and the plant area during the survey.
- We sheet the area and the unit is isolated.
- Dirt and debris are removed from each section.
- Coils and trays are cleaned and the condensate drain cleared.
- The unit is closed up and handed back, with a report to follow.
Getting ready for the visit
- Let us know about permits to work or site inductions
- Tell us the best time to work, such as after service or at a weekend
- Arrange a key holder or contact on site
Get a fixed quote
To help us quote: the address, the type of site and when it’s open, pictures of the system and any previous report or certificate. Then phone us on 0345 646 2711, or email photos.
Related advice
For landlords and multi-site operators
From a single site to a large estate, you get the same standard: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
Running several sites is easier with one contractor. We cover South East England and London, so a run of sites can go into one programme and kept to a regular schedule.
Towns and villages near Chessington
What else we do in Chessington
Aftercare tips
Good habits slow the build-up between visits. A few tips:
- Stick to the filter change plan
- Check the drain tray is emptying during routine visits
- Keep the area around the fresh air intake clear
- File each AHU report in the maintenance log
When we have closed the unit up, it can be restarted with your site team. Check the drain tray is emptying over the first few days to confirm water is draining away.
Change or clean filters on time. Once filters clog, dirt starts getting past them.
Chessington buildings and their air
There are about 20 schools, colleges and universities, about 25 caring premises (care homes, nurseries and hospitals) and about 3 hotels, B&Bs and guest houses on the FSA’s food hygiene register within 1.5 miles or so of the middle of Chessington. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. Getting kit to a London plant room usually means lifts, stairs and an agreed loading slot. For Chessington, the closest hospital is Tolworth Hospital, roughly 1.2 miles north-east. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
Hospitals such as Tolworth Hospital (about 1.2 miles north-east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Chessington are no different. Workplaces around Chessington North station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts.
Chessington is about 2 miles north-west of Epsom, in Greater London. Anywhere in KT9, we can carry out AHU cleaning at your premises. Chessington is one of 764 places in Greater London we cover for AHU cleaning. There’s also a page for London, roughly 13 miles from Chessington.
AHU cleaning in KT9, KT19 and KT6 follows the same survey, fixed quote and written report as everywhere else we cover. We cover sites on Elm Road, Cox Lane and Moor Lane and the roads around them. With the A243 close by, Chessington is simple for us to get to for AHU cleaning. Nearby, we also carry out AHU cleaning in Horton (1 mile south), Old Malden (2 miles north-east), Tolworth (2 miles north-east), Surbiton (2 miles north) and Worcester Park (2 miles east). Larger places within reach include London (13 miles north-east), City of Westminster (12 miles north-east), Marylebone (13 miles north-east), Kensington (10 miles north-east), St Pancras (14 miles north-east) and Shoreditch (15 miles north-east).
Local landmarks in Chessington
Typical jobs here are in premises near Shrewsbury House School, Chessington Community College and Horton Country Park and the streets around them. There’s a railway station in Chessington itself: Chessington North station. Nearby you will also find Tolworth Hospital (1.2 miles north-east) and Chessington Castle Hill (0.5 miles south-east). Open spaces near Chessington include Kingston Hill Road area and Bonesgate Open Space.
What the work involves, part by part
Drain trays
A tray that doesn’t drain becomes a pool of stagnant water in the airstream. We clean it and report anything about the tray or drain that needs fixing.
Heating and cooling coils
Because cooling coils run wet, the dirt on them tends to cling. The coil and its drain tray are cleaned as one job.
When something else is needed
It’s worth knowing the limits before booking:
- Dirty ducts beyond the unit itself
- Breakdowns that need a mechanical engineer
- Problems with the unit’s controls or sensors
Not sure which it is? You can ring 0345 646 2711 or send us an email and we’ll tell you honestly before booking.
Where we work
- Dampers and louvres
- Drain trays
- Supply and extract fans
- Heating and cooling coils
- Internal panels
- Filter sections
Questions from Chessington
Do you work overnight in Chessington?
Yes. We work evenings, overnight and at weekends. The work in Chessington can fit around your hours. Just phone us on 0345 646 2711 or drop us a line with your opening times and we’ll plan around them.
Do you clean school ventilation in Chessington in the holidays?
Yes, and it’s the easiest time to do it. Around Chessington, the Food Standards Agency lists about 20 schools and colleges with registered kitchens within a mile and a half or so. Booking early in the term gives the best choice of holiday dates.
Can you set up regular visits?
Yes, of course. Send details of the systems and how they’re used and we’ll propose a schedule with a fixed quote.
Do you offer emergency callouts?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line and we’ll talk you through the next steps.
Are you accredited?
BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001. We are fully insured and have been trading since 2009.
Will you repair the fan or motor?
Our AHU work is cleaning rather than mechanical repair. If we spot a fault, we note it in the report for your maintenance team to follow up.
What if parts of the system cannot be reached?
They’re listed in the report, never skipped quietly. The report says which parts couldn’t be reached and why, and we can quote to improve the access.
What is TR19?
TR19® is BESA’s specification for ventilation hygiene. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
What we are called out for in Chessington
An AHU’s intake draws in outdoor air and everything in it: dust, pollen, leaves and debris. Most of it lands at the intake and the first stage of filters, and the finer material travels on.
Keep an eye out for any of the following:
- Plant that has been serviced but not cleaned
- Drain trays holding standing water
- Dirty filters cutting the airflow
- Air handling units due a clean after building work
If you manage a school such as Castle Hill Primary School, ventilation cleaning is best booked for the holidays.
What your quote should include
- Whether the work can be done while the site is closed
- What insurance they carry
- What happens if part of the system can’t be accessed
- Whether the figure could change on the day