Surrey · Air handling unit cleaning
Air handling unit cleaning in Horsell, Surrey
Our technicians work in Horsell on cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces. Fixed quotes, work around your opening hours and photo reports as standard.
- Plant that has been serviced but not cleaned
- Blocked condensate drains and slimy trays
- Rooms that smell stuffy when the system runs
Landlords, agents and facilities managers
Where a tenant occupies the premises but the landlord owns the building, it’s worth checking the lease for who maintains the systems. We are happy to deal with either side, and the report can go to both.
Whether it’s one building or many, you get the same standard: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
About our AHU cleaning in Horsell
An AHU clean is a thorough examination and treatment of the unit. We look inside each section, clean what we find and record it with pictures, so you can see the unit’s condition for yourself. If you’re dealing with plant that has been serviced but not cleaned and rooms that smell stuffy when the system runs, we can help.
In a place like Horsell, air handling units are often tucked into roof spaces or small plant rooms, out of sight and easy to overlook. Filters, coils and drain trays need attention whatever the size of the unit.
Accreditations are easy to claim and worth checking. We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Place
- Horsell (GU21, GU22)
- Region
- Surrey
- Reporting
- Written report with photos
- Price
- Fixed quote, usually within a working day
- When we work
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
How the visit works
Night work is normal for us. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. On site, the work takes from a few hours for a compact unit to a day or more for a large one. Tell us when your site near Horsell is quiet and the visit will be booked for then.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Dirt and debris are removed from each section.
- We clean the coils and clear the tray and drain.
- The unit is closed up and handed back, with a report to follow.
Before we arrive
- Move anything stored near the system
- Tell us the best time to work, such as after service or at a weekend
- Let us know about parking and loading
Ask for a quote
Quoting starts with a diagnosis, from your photos and details or, where that isn’t enough, a survey on site. After that, you get a fixed price for the work, before work begins.
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In-house cleaning or a specialist?
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but the parts you can’t see still need a specialist at the right interval.
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. Leave those to us.
Horsell questions
Do you do school ventilation cleaning in Horsell in the summer holidays?
Yes, holiday work suits schools best. Food Standards Agency records list about 13 schools, colleges and universities with registered kitchens within about a mile and a half of Horsell. You can give us a ring on 0345 646 2711 or drop us a line with the dates the site is empty.
Can you come to Horsell after we close?
Yes, out-of-hours work is a big part of what we do. That way a site in Horsell does not have to lose a day’s trading. Your opening times are the first thing we ask for.
What do you do with what you remove?
It’s contained and taken away. We collect grease, debris and waste water as we go, so it does not spread.
What’s TR19?
BESA’s ventilation hygiene specification in two main parts: TR19® Grease for kitchen extract systems and TR19® Air for general ventilation. It is not legislation, but it’s the standard people check against.
How do you keep the site clean during the work?
By covering it before any work starts. We keep the work contained and leave the area clean.
Can you quote from photos?
Yes, where the pictures show enough. Otherwise, we book a survey at a time that suits the site, and the quote follows that.
What types of premises do you cover?
Any site with a kitchen or a ventilation system to look after, from a single café to a large school. We work with hotels, schools, care homes, offices, retail and leisure sites.
Can you set up regular visits?
Yes. Regular plans can run on 3, 6 or 12-monthly cycles, depending on what the system needs.
Looking after it afterwards
Once we have finished, these simple steps help:
- Report stiff or damaged access doors
- File each AHU report in the maintenance log
- Keep filter changes on time and recorded
- Diary the inspection date recommended in the report
If the ductwork hasn’t been cleaned, consider it next. Cleaning the unit and ducts together gives the best result, and we can quote for both.
Don’t let leaves, litter or stored materials build up near the fresh air intake. Anything around the intake is likely to be drawn in.
What affects the cost of AHU cleaning
The diagnosis comes before the price. The main factors are:
- The condition of the system
- Whether several sites go on one quote
- Whether it’s a one-off visit or part of a schedule
- The scale of the work
No two sites are the same, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all play a part.
Asking for a quote
Photos and a few facts are often enough to price the work. Send what you can of the following:
- Detail shots of panels, filters and grilles
- Problems your staff have spotted
- The roof, plant room or outside wall the system runs to
- The times we could work without disrupting the site
Want a quote for AHU cleaning? Please give us a ring on 0345 646 2711 or use the quote form with a few details about the site. We’ll talk you through the work and give you a fixed quote before you commit to anything.
Do you need AHU cleaning in Horsell?
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 some travels further into the unit.
Most sites get in touch when they notice something like this:
- Filters that are clogged or overdue
- Plant that has been serviced but not cleaned
- Coils clogged with dust and debris
- Dust built up on fan impellers
For schools like Woking High School, the holidays are the usual time to inspect and clean ventilation.
Comparing quotes
- What hours they’ll be on site
- Whether a written report and photos are included
- Whether the whole system is included, or only the parts that are easy to reach
- When the next visit should be, and why
When something else is needed
In fairness, there are a few things this work will not fix:
- Ventilation that was badly designed in the first place
- Building management system faults
- Ductwork downstream of the unit, which is a separate clean
If in doubt, give us a ring on 0345 646 2711 or use the quote form and we’ll say what we think.
What the work covers
- Filter sections
- Dampers and louvres
- Internal panels
- Supply and extract fans
- Heating and cooling coils
- Drain trays
AHU cleaning around Horsell
There are about 13 schools, colleges and universities, about 15 hospitals, care homes and childcare premises and about 3 hotels and guest houses on the FSA’s food hygiene register within 1.5 miles or so of the middle of Horsell. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. We cover Horsell, about 23 miles from central London, as part of our work across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site. Woking Community Hospital is the nearest hospital, about 1 mile south of Horsell. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
Hospitals such as Woking Community Hospital (about 1 mile south) show how much a building can rely on clean ventilation, and smaller healthcare sites near Horsell are no different. If you run an office near Woking station, its supply ductwork can gather dust for years before anyone looks inside.
Horsell is about 1 mile north-east of Woking, in Surrey. Anywhere in GU21, we cover AHU cleaning for commercial sites. Across Surrey, we cover 395 places, and Horsell is one of them. For sites nearby, see our Guildford page, about 6 miles away.
Postcode districts we cover here for AHU cleaning: GU21 and GU22. AHU cleaning is available to premises on Elm Road, Heath Road and Popes Lane and the roads around them. You will find Horsell on the A3046, which makes it straightforward for our technicians to reach for out-of-hours visits. If your site is just outside Horsell, we cover Woking (1 mile south-west), Goldsworth Park (1 mile south-west), Mimbridge (1 mile north-west), Sheerwater (1 mile east) and St John's (2 miles south-west). Further out, we also cover Guildford (6 miles south), Camberley (7 miles west), Epsom (13 miles east), Farnham (13 miles south-west), Ewell (13 miles east) and Egham (7 miles north).
Local landmarks in Horsell
Around Horsell, our work takes us to kitchens and buildings near The Horsell Village School, Milford Green and Coxhill Green and The Red Lion pub, among other places. The nearest railway station is Woking station, roughly 0.7 miles south of the centre. A little further out are The Hockey Museum (0.7 miles south) and Woking Community Hospital (1 mile south). The countryside around Horsell includes Gracious Pond and Boldermere Lake.