Surrey · Air handling unit cleaning
Air handling unit cleaning in Charlton, Surrey
For AHU cleaning in Charlton, one call is all it takes: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Dirty filters cutting the airflow
- Blocked condensate drains and slimy trays
- Plant that needs cleaning after a refit
AHU cleaning for kitchens and businesses in Charlton
An air handling unit is the heart of a building’s ventilation: it draws air in, filters it, heats or cools it and pushes it round the ductwork. Whatever builds up inside it travels with that air, which is why we clean the unit itself, not just the ducts. If you are dealing with dirty coils holding back the airflow and intake sections clogged with outdoor debris, we can help, from dampers and louvres, filter sections and heating and cooling coils onwards.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, where filters and drain trays get forgotten.
The report is your system’s health record: dated, with pictures, and showing what was done. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal and sits alongside the report.
- Location
- Charlton (TW17)
- Region
- Surrey
- Reporting
- Photo report after every visit
- Quotes
- Fixed quote, typically within a working day
- Working hours
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
What AHU cleaning can’t fix
AHU cleaning can’t fix everything, and we’d rather say so up front. It will not put right:
- Problems with the unit’s controls or sensors
- Leaking heating or cooling coils
- Dirty ducts beyond the unit itself
If you’re not sure, just call us on 0345 646 2711 or email us and we will give you a straight answer before you book.
What the work covers
- Filter sections
- Internal panels
- Dampers and louvres
- Drain trays
- Supply and extract fans
- Heating and cooling coils
Towns and villages near Charlton
Other services in Charlton
Different parts, different methods
Heating and cooling coils
Dirt on a coil slows the air and makes it harder for the coil to heat or cool. A clean gets air moving through the coil properly again.
Fans and fan sections
Before the fan is touched, the unit is shut down and made safe in agreement with the site.
What your team can do, and what needs us
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We’ll take a look and give you a fixed quote.
Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. That is our job.
Aftercare tips
No system stays clean for ever, but care slows the build-up. A few tips:
- Keep filter changes on time and recorded
- Book the next check in line with the report
- Check the drain tray is emptying during routine visits
- Report water on the plant room floor
Stick to the filter change schedule, as that does more than anything to keep the unit clean. Record each change in the maintenance log.
Make sure access doors and panels on the unit open easily. Sections that are awkward to open are the ones that get skipped.
What we are called out for in Charlton
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:
- Air handling units never cleaned inside
- Dirty fans and fan housings
- Filters that are clogged or overdue
- Coils clogged with dust and debris
If you run an office near Upper Halliford station, its supply ductwork can gather dust for years before anyone looks inside.
Before booking anyone
- What insurance they carry
- When they can work, and whether that is outside your opening hours
- Whether the figure could change on the day
- Whether the quote is based on a survey or pictures
Charlton buildings and their air
There are about 21 schools, colleges and universities, about 14 hospitals, care homes and childcare premises and about 3 hotels, B&Bs and guest houses on the FSA’s food hygiene register within about 1.5 miles of central Charlton. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. We cover Charlton, about 16 miles from central London, as part of our work across London and the South East. Evening, overnight and weekend visits are all possible. No. 2 New Zealand General Hospital is the nearest hospital, about 1.9 miles south-east of Charlton. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
No. 2 New Zealand General Hospital, about 1.9 miles south-east, is the nearest hospital to Charlton, and healthcare sites of every size need their supply air kept clean. Wherever a school like Littleton CofE Infant School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Charlton is about 1 mile west of Sunbury-on-Thames, in Surrey. We provide AHU cleaning for businesses, landlords and public buildings in Charlton and the rest of Surrey. Charlton is one of 395 towns, villages and districts in Surrey we cover for commercial clients. There’s also a page for Guildford, about 13 miles away.
We cover every part of the TW17 postcode area for AHU cleaning and the streets around it. Streets in the area include Lodge Way, Charlton Road and Hetherington Road, and we cover them all for AHU cleaning. We also cover the places around Charlton: Littleton Common (1 mile north), Upper Halliford (1 mile south-east), Ashford Common (1 mile north), Shepperton Green (1 mile south-west) and Littleton (1 mile west). We also work in nearby towns such as Guildford (13 miles south-west), Woking (9 miles south-west), Camberley (13 miles south-west), Epsom (9 miles south-east), Ewell (9 miles south-east) and Egham (5 miles west).
What’s near Charlton
We work in commercial kitchens and buildings around Sunbury Manor School, The Bishop Wand Church of England School and Sunbury Park. Charlton’s nearest station is Upper Halliford station, about 0.6 miles east of the centre. Well-known places in the area include Kempton Steam Museum (2 miles north-east) and No. 2 New Zealand General Hospital (1.9 miles south-east). Open spaces near Charlton include St Ann's Hill and Ferris Meadow Lake.
What happens on the day
We’re used to working while the site is closed. Evenings, nights and weekends are when much of our work happens, so a kitchen or building can carry on as usual the next day. The visit itself takes from a few hours for a compact unit to a day or more for a large one. Rural roads and tight entrances are worth telling us about before a visit to Charlton.
- First the unit is surveyed, from pictures or a visit, and the scope agreed.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- Standing water and slime come out of the tray and the drain is checked.
- You get a TR19® certificate and a photo report.
Before we arrive
- Mention any locked doors, roof access or ceiling voids
- Clear the space around the work
- Make sure someone can let us in and lock up afterwards
Get a fixed quote
Want a quote for AHU cleaning? Please phone us on 0345 646 2711 or send us an email and tell us about the site. We’ll explain what we’d do and send a fixed quote before anything is booked.
Related advice
FAQs for Charlton
Can a school’s ventilation in Charlton be done out of term time?
Yes, holiday work suits schools best. Food Standards Agency records list about 21 schools, colleges and universities with registered kitchens within about a mile and a half of Charlton. Send us your term dates when you ring 0345 646 2711, or email photos, and we will fit the work in.
Do you work overnight in Charlton?
Yes. We work evenings, overnight and at weekends. It means the site in Charlton keeps running as normal. When you ring 0345 646 2711 or email us, mention when the site is quiet.
What do you clean inside the unit?
We clean the filter section, heating and cooling coils, drain trays, fan and internal casing. What happens to the filters is agreed when we quote.
Do you have a 24/7 line?
Yes. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line, and we’ll advise on what to do next.
Which sectors do you work in?
Any site with a kitchen or a ventilation system to look after, from a small pub to a hospital. Hotels, schools, care homes, offices, shops and leisure sites are all part of our work.
Is Charlton in your area?
Yes. We work in Charlton and across Surrey, within our South East and London area. To book, give us a ring on 0345 646 2711, or email photos.
How often should an air handling unit be cleaned?
That’s set by inspection, in line with TR19® Air. Units in heavy use or in sensitive buildings may need attention more often.
Will we get paperwork for the AHU clean?
Yes. Every clean comes with a TR19® certificate and a photo report. They’re worth keeping with the plant records.
What affects the cost of AHU cleaning
Before we fix a price, we need to know a few things. We look at:
- Whether several sites go on one quote
- Whether we need access equipment or extra panels
- The condition of the system
- The times the site is available
Every site is different, so each one gets its own fixed quote. The size of the job, how we reach it, its condition and the working hours all play a part.
What we need to know
There’s no need for technical detail. It helps if you can send:
- Close-ups of filters, grilles, hatches or access panels
- Photos showing the whole system and its surroundings
- The roof, plant room or outside wall the system runs to
- When the site is open and when it’s quiet
For AHU cleaning in Charlton, phone us on 0345 646 2711, or send details by email. Let us know the site type and the opening hours, plus pictures or the previous report if they’re to hand. We usually send a fixed quote within one working day.