Surrey · Air handling unit cleaning
Air handling unit cleaning in Horley, Surrey
Looking for AHU cleaning in Horley? We survey first, send you a fixed quote and work around your opening hours, then sign off with a report and pictures.
- Odours coming through the supply air
- Units needing a clean before a new tenant or handover
- Leaves and litter drawn into the unit
AHU cleaning in Horley
Heating and cooling coils trap dust that gets past the filters. Dirt on the fins holds back air and makes the unit work harder to do the same job. We clean coils with methods suited to their condition, taking care not to damage the fins. Typical jobs include air handling units due a clean after building work and dust-coated heating and cooling coils, across internal panels, heating and cooling coils and filter sections.
In Horley, ventilation in schools and offices is cleaned when the building is quiet: evenings, weekends or school holidays.
Accreditations are easy to claim and worth checking. Ours are BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001, and we’re fully insured.
- Place
- Horley (RH6)
- Wider area
- Surrey
- Reporting
- Report and pictures after the visit
- Quotes
- A fixed price before work begins
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
Honest limits
We won’t sell you work that doesn’t address the problem, so here are the limits:
- Faulty motors, drives or bearings
- Leaking heating or cooling coils
- A system that’s undersized for the building
If in doubt, give us a ring on 0345 646 2711, or send details by email and we’ll say what we think before you book.
Parts of the system we cover
- Drain trays
- Internal panels
- Heating and cooling coils
- Supply and extract fans
- Dampers and louvres
- Filter sections
Nearby places to Horley
What else we do in Horley
Landlords, agents and facilities managers
For anyone managing more than one site, we can plan visits across the whole estate and price them together. Every building has its own written report, so records stay tidy.
Facilities teams in offices, schools and healthcare sites book us too across Surrey. Larger estates can be phased building by building to keep disruption down.
How we price AHU cleaning
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Whether it’s a one-off visit or part of a schedule
- Travel, parking and unloading
- The number of sites or systems
- Site rules, permits and inductions
Several systems or sites on one quote can make for a more efficient booking. Mention every system or site you need covered, and you’ll get one fixed quote.
Asking for a quote
When you call or email, it’s useful to have:
- Any symptoms, from odd noises to smells or leaks
- Where the site is and what kind of site it is
- Photos showing the whole system and its surroundings
- Any access panels or hatches you can see
For a fixed quote, ring 0345 646 2711, or email photos with the site type, your trading hours and a short description of the system. A few photos and your last certificate or report help a lot. You will normally have a quote within one working day.
Between visits
Results last longer with the right care. Here’s what we suggest:
- File each AHU report in the maintenance log
- Book the next check in line with the report
- Keep filter changes on time and recorded
- Note any water around the unit or leaks below it
Photos in the report cover the filters, coils, drain tray, fan and casing, and note any part we couldn’t get to. Any defects we noticed, like a leaking tray or damaged lining, are listed.
Do not let leaves, litter or stored materials build up near the fresh air intake. What’s near the intake ends up in the unit.
Horley questions
Do you cover Horley for AHU cleaning?
Yes, we work in Horley and the places around it. Get in touch with the details and we will arrange a survey.
Can you clean school ventilation in Horley during the holidays?
Yes. Half-terms and the summer break are the natural time for school work. Food Standards Agency records list about 5 schools, colleges and universities with registered kitchens within about a mile and a half of Horley. Send us your term dates when you call us on 0345 646 2711, or send details by email, and we’ll fit the work in.
Can one contract cover all our sites?
Yes. One number covers all your sites in our area, with visits on a regular schedule.
Can you clean the AHU out of hours?
Yes. The clean is planned around when the unit can be switched off. Healthcare and care settings are planned with staff.
Do you have a 24/7 line?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line, and we will advise on what to do next.
Can you fix a faulty AHU?
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.
How much notice do you need?
For planned work, earlier is better, especially if the next clean or test is due soon. Emergencies are different, because our line is open 24/7.
Do you need to switch the unit off?
Yes, while the clean is under way. Out-of-hours work is available so the building isn’t left without ventilation when it’s busy.
Why deal with it now?
If people in a building in Horley complain about stuffy or smelly air, the AHU is worth looking at. A clean tackles the source instead of masking it. An inspector or insurer will want to see recent records, so it makes sense to have them ready.
A single site or a whole portfolio, we price it on the same basis: the work involved, the access and the timing. You’ll have a fixed price before work begins.
What you get with us
- Photo reports with every job
- One contact for all your sites in London and the South East
- Survey first, then a fixed quote
- CHAS, SafeContractor and ISO 9001
Take a look at what affects the cost and our accreditations and certificates.
In-house cleaning or a specialist?
For ventilation and air handling systems, in-house care is mostly about checks: clear grilles, a log of filter changes and reporting anything odd. Cleaning inside ducts and units is specialist work.
Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. Inside the ducts, risers and fan is specialist work, which is where we come in.
Horley buildings and their air
Food Standards Agency records list about 5 schools, colleges and universities, about 17 hospitals, care homes and childcare premises and about 17 hotels and B&Bs registered as food businesses within 1.5 miles or so of the middle of Horley. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. We cover Horley, about 22 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. East Surrey Hospital is the nearest hospital, about 2.8 miles north of Horley. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
If you run a surgery, dental practice or care home near Horley, clean ventilation matters as much to you as to a hospital like East Surrey Hospital (about 2.8 miles north). For workplaces around Horley station with mechanical ventilation, cleaning can be done in the evening or at weekends. If you manage a school such as Horley Infant School, ventilation cleaning is best booked for the holidays.
Horley is about 5 miles north of Crawley, in Surrey. Anywhere in RH6, we cover AHU cleaning for commercial sites. Across Surrey, we cover 395 places, Horley among them. We also work in Guildford, about 18 miles from Horley.
AHU cleaning in RH6 follows the same survey, fixed quote and written report as everywhere else we cover. You’ll find streets such as Station Road, High Street and Church Road, all of which we cover for AHU cleaning. Horley sits on or near the A23 and B2036, so getting to you is simple for evening and night visits. We also cover the places around Horley: Hookwood (1 mile south-west), Fernhill (2 miles south-east), Burstow (2 miles south-east), Smallfield (2 miles east) and Shipley Bridge (2 miles south-east). Further out, we also cover Epsom (12 miles north), Redhill (4 miles north), Ewell (13 miles north), Reigate (4 miles north), Caterham (8 miles north-east) and Dorking (8 miles north-west). Horley is among the bigger places we cover in Surrey for AHU cleaning.
Around Horley
Typical jobs here are in premises near The Bull pub and Oakwood School and the streets around them. Horley’s nearest station is Horley station, about 0.8 miles south-east. Well-known places in the area include Reigate Castle (4.5 miles north) and East Surrey Hospital (2.8 miles north). The countryside around Horley includes Reigate Heath.
What happens on the day
Protection comes first: floors, worktops and anything near the work are covered. After that, the system is made safe and the work begins. The work on site takes a single shift for a typical unit, longer for large or heavily soiled ones, and the area is cleaned down before we leave. Parking in a town like Horley is usually straightforward, so the main questions are access and timing.
- 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.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
Getting ready for the visit
- Make sure someone can let us in and lock up afterwards
- Dig out any earlier paperwork for the system
- 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, photos of the system and any previous report or certificate. Once you have those, call us on 0345 646 2711 or use the quote form.