Surrey · Air handling unit cleaning
Air handling unit cleaning in Leigh, Surrey
Air handling unit cleaning for commercial sites in Leigh and across Surrey. CHAS, SafeContractor and ISO 9001, and fully insured.
- Fan sections that haven’t been cleaned in years
- Dirty coils holding back the airflow
- Air handling units with blocked filters
AHU cleaning in Leigh, done properly
We clean air handling units for buildings in Leigh and across Surrey, working to TR19® Air, in offices, schools, hospitals, care homes and retail. Units are cleaned when the site can spare them, often evenings, overnight or weekends. Common call-outs are for rooms that smell stuffy when the system runs and debris and leaves in the fresh air intake, across drain trays, supply and extract fans and heating and cooling coils.
In rural areas, ventilation units are often in roof voids or outbuildings, which makes them easy to overlook.
Insurers, fire officers and environmental health officers all look at records. So every job comes with a written report and photos, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Where
- Leigh (RH2)
- Region
- Surrey
- Paperwork
- Report and pictures after the visit
- Price
- Fixed quote, normally within a working day
- Working hours
- Nights, weekends or holidays to suit you
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
How the visit works
We turn up at the time agreed with you, often in the evening, overnight or at the weekend so the site keeps working. Equipment that has to be off is switched off and allowed to cool first, and the area around the work is covered and protected. The work itself takes half a day to a full day per unit, with large plant planned over several shifts. Visits to a village like Leigh are booked in advance, at a time that suits whoever runs the site.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
How to prepare
- Have your last certificate or report to hand
- Let us know about parking and loading
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
Get a fixed quote
Some systems can be priced from pictures; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, the quote is fixed before any work is booked.
Advice
Why deal with it now?
Standing water in a drain tray doesn’t clear itself. Leave it and you risk overflows, leaks into the space below and odours carried round the building. Dealing with it early keeps the clean straightforward. Our emergency line runs 24/7, but a planned visit to Leigh is calmer for everyone.
Working hours, access and the scale of the site can all change the price. Each of those is built into the quote, and the price is fixed before we start.
Why us?
- We diagnose before we treat
- CHAS and SafeContractor accredited, with ISO 9001
- In business since 2009
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
See what affects the cost or our accreditations and certificates.
AHU cleaning in Leigh: local notes
About 21 miles out from central London, Leigh is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site. For Leigh, the closest hospital is East Surrey Hospital, roughly 3.7 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.
Hospitals such as East Surrey Hospital (about 3.7 miles east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Leigh are no different.
Leigh is about 3 miles south-west of Reigate, in Surrey. Sites in Leigh get the same service as everywhere we cover: diagnosis first, a fixed price, out-of-hours working where needed and a written report with pictures. Our area takes in 395 places across Surrey, from busy centres to quieter spots. You can also see our page for Guildford, about 14 miles away.
Every address in RH2 is covered for AHU cleaning, from the main roads to the quietest streets. We cover sites on Church Road, Smalls Hill Road and The Glebe and nearby roads. If your site is just outside Leigh, we cover Dawesgreen (1 mile north-west), Bunce Common (1 mile west), Irons Bottom (2 miles east), Strood Green (2 miles north-west) and Sidlow (2 miles east). Within a short drive, we also cover Guildford (14 miles west), Epsom (9 miles north), Horley (4 miles south-east), Redhill (4 miles north-east), Ewell (10 miles north) and Reigate (3 miles north-east).
Landmarks near Leigh
Locally, jobs take us to businesses close to The Seven Stars Public House, among other places. The closest station to Leigh is Betchworth station, roughly 2.9 miles north of the centre. A little further out are Reigate Priory Museum (2.7 miles north-east) and East Surrey Hospital (3.7 miles east). Open spaces near Leigh include Reigate Heath and Colley Hill.
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 can quote either party, and the report can go to both.
We also work for facilities teams across offices, schools and healthcare in Leigh and across Surrey. Work can be phased by floor, building or site to keep disruption down.
Do you need AHU cleaning in Leigh?
Mechanical servicing keeps a unit running, but it doesn’t always include cleaning the inside. So a unit can be well maintained and still dirty.
Common reasons sites call us are:
- Dust-coated heating and cooling coils
- Dust built up on fan impellers
- Filters that are clogged or overdue
- Condensate trays that will not empty
For schools like Burys Court School, the holidays are the usual time to inspect and clean ventilation.
Questions to ask before booking
- Whether the price is fixed
- How areas they can’t reach will be recorded
- Whether the work can be done while the site is closed
- When the next visit should be, and why
When something else is needed
Some problems need a different service or another trade:
- A system that’s undersized for the building
- Mechanical faults with motors, belts or bearings
- Controls and BMS settings that run the unit
If you are not sure, just phone us on 0345 646 2711 or drop us a line and we’ll give you a straight answer before booking.
Parts of the system we cover
- Filter sections
- Dampers and louvres
- Supply and extract fans
- Internal panels
- Heating and cooling coils
- Drain trays
Looking after it afterwards
No system stays clean for ever, but care slows the build-up. A few tips:
- Report water on the plant room floor
- Diary the inspection date recommended in the report
- Change filters on schedule and log each change
- Report stiff or damaged access doors
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.
Make the drain tray part of every maintenance visit. Catching a slow drain early stops standing water building up.
Towns and villages near Leigh
What else we do in Leigh
FAQs for Leigh
Can a school’s ventilation in Leigh be done out of term time?
Yes, out-of-term visits are normal for schools. There are about 2 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Leigh. Booking early in the term gives the best choice of holiday dates.
Can you come to Leigh after we close?
Yes, we can come after you close and finish before you open. Your customers, staff or residents in Leigh needn’t be disturbed. Just give us a ring on 0345 646 2711 or send us an email with your opening times and we’ll plan around them.
What is TR19?
TR19® is the BESA specification for keeping ventilation systems clean. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.
Which parts of an air handling unit do you clean?
All the internal parts the air touches, from intake to discharge, including coils, fan and drain trays. You get a photo report showing each part before and after.
What information do you need?
The site address, the type of premises and your opening hours, plus pictures of the system and your last certificate or report if you have one.
Can we book visits on a schedule?
Yes. Scheduled maintenance plans are part of what we do, with visits at the interval your system needs. Each report recommends when the next visit should be.
Which sectors do you work in?
All kinds of commercial and public premises: from restaurants, pubs and hotels to schools, hospitals, care homes, offices, shops and food production sites. We fit the work around how the site operates.
How much does AHU cleaning cost?
We don’t publish prices, because the cost depends on the job: how big it is, what state it’s in, how we reach it and the working hours. You get a fixed price before we start.
How the job changes from site to site
Fans and fan sections
The fan moves all of the unit’s air, so dirt on it gets spread around. The impeller, its housing and the fan chamber are cleaned.
Internal casing and panels
Access doors and panels are opened in turn and closed properly afterwards before the unit is handed back.