Surrey · Air handling unit cleaning
Air handling unit cleaning in Wisley, Surrey
Looking for AHU cleaning in Wisley? We diagnose first, fix the price and book the work around your hours, finishing with a written report and pictures.
- Dust-coated heating and cooling coils
- Odours coming through the supply air
- Units needing a clean before a new tenant or handover
AHU cleaning in Wisley
We clean air handling units for buildings in Wisley and across Surrey, 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. We are often asked to deal with filters that are clogged or overdue and units that have only ever had filter changes, across supply and extract fans, internal panels and drain trays.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
The paperwork matters as much as the work. Each visit is written up with pictures, listing what was done, anything we couldn’t reach and when the next visit is due. Keep it with your fire safety records so it’s to hand when an insurer or inspector asks.
- Place
- Wisley (GU23)
- Wider area
- Surrey
- Records
- Report and pictures after the visit
- Quote
- A fixed quote up front
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Checked
- 30 October 2026
Why it’s worth doing now in Wisley
Leave an AHU uncleaned and the dirt doesn’t stay put. It’s carried through the ductwork and out of the grilles, which is why the unit and the ducts are best cleaned together. A fault that closes a site in a village like Wisley affects everyone who depends on it.
What you pay reflects the actual work. That is why we survey first, from pictures or on site, and the price is agreed before work begins.
Why book with us
- Evenings, overnight and weekends, plus 24/7 emergency callout
- One contact for all your sites in London and the South East
- Fully insured
- Fixed quotes, usually within one working day
Between visits
How long the results last depends on use and care. Here’s what we suggest:
- Keep filter changes on time and recorded
- Flag stale or damp smells in the supply air
- Plan the next inspection before the last report gets filed away
- Keep inspection doors on the unit in good order
Keep filter changes on schedule between cleans, because good filters protect everything downstream. Record each change in the maintenance log.
Have the unit inspected regularly, in line with the risk-based approach of TR19® Air instead of leaving it to guesswork.
What your team can do, and what needs us
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. That’s our job.
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 can diagnose it and quote.
AHU cleaning around Wisley
Food Standards Agency records list about 4 schools, colleges and universities and about 7 hospitals, care homes and childcare premises registered as food businesses in Wisley and the streets around it, up to about 1.5 miles out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Woking Community Hospital is the nearest hospital, about 3.5 miles west of Wisley. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. About 21 miles out from central London, Wisley is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site.
School buildings such as St Mary's CofE Controlled Primary School are normally done in the holidays, so classrooms are not disturbed.
Wisley is about 4 miles south of Weybridge, in Surrey. Every kind of commercial site in Wisley, we can take on AHU cleaning. Visits can be booked for evenings, overnight or weekends so the site keeps running. 395 places in Surrey are on our list, from busy centres to quieter spots. You can also see our page for Guildford, roughly 7 miles from Wisley.
Our technicians cover all of the GU23 postcode area for AHU cleaning and the roads nearby. We cover sites on Weybank, Deers Farm Close and Wisley Lane and the roads around them. We also cover Pyrford Green (1 mile west), Byfleet (1 mile north), Hatchford End (2 miles south-east), New Haw (2 miles north) and Martyr's Green (2 miles south-east). Within a short drive, we also cover Guildford (7 miles south-west), Woking (4 miles west), Camberley (11 miles west), Epsom (9 miles east), Redhill (15 miles south-east) and Ewell (10 miles east).
Landmarks near Wisley
Typical jobs here are in premises near The Anchor pub, Manor Farm and Fullbrook School and the streets around them. For rail, the closest station is West Byfleet station, roughly 1.7 miles north-west of the centre. Nearby you’ll also find Send and Ripley History Society Museum (1.8 miles south-west) and Woking Community Hospital (3.5 miles west). For a walk, there’s Papercourt Marshes and Boldermere Lake.
What we are called out for in Wisley
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.
The symptoms we are asked about most include:
- Air handling units never cleaned inside
- Plant that needs cleaning after a refit
- Dirty fans and fan housings
- Dirty coils holding back the airflow
If you run a surgery, dental practice or care home near Wisley, clean ventilation matters as much to you as to a hospital like Woking Community Hospital (about 3.5 miles west).
Before booking anyone
- Whether a written report and pictures are included
- Proof of accreditation you can verify
- Whether the work can be done while the site is closed
- What happens if part of the system cannot be accessed
How the visit works
Protection comes first: sheeting goes over floors and surfaces close to the work. Then we make the system safe and start. It takes half a day to a full day per unit, with large plant planned over several shifts, and the area is cleaned down before we leave. Visits to a village like Wisley are booked in advance, at a time that suits whoever runs the site.
- First we agree when the unit can be switched off, including evenings or weekends.
- We take before pictures of each section of the unit.
- We work through the unit from the intake to the outlet.
- We finish with the fan section and the drain tray.
- We take after photos and issue the certificate and report.
How to prepare
- Let us know how we reach the system, including roofs, risers and plant rooms
- Plan for cooking equipment or plant to be off before we arrive
- Mention any sign-in, permit or induction we need
Get a fixed quote
Quoting starts with a diagnosis, either from pictures and details you send or from a site visit. After that, you get a fixed price for the work, before we start.
Advice
Places near Wisley
Also in Wisley
Part by part
Fans and fan sections
Every bit of air passes the fan, so a dirty fan sends dirt downstream. We clean the impeller, housing and surrounding section.
Drain trays
A tray that doesn’t drain becomes a pool of stagnant water in the airstream. We clean it and note if the slope or the drain needs attention.
Common questions in Wisley
Do you work overnight in Wisley?
Yes. We work evenings, overnight and at weekends. The work in Wisley can fit around your hours. Just give us a ring on 0345 646 2711 or send us an email with your opening times and we will plan around them.
Can a school’s ventilation in Wisley be done out of term time?
Yes, out-of-term visits are normal for schools. With about 4 schools and colleges on the FSA’s register within roughly a mile and a half of Wisley, it pays to plan holiday dates ahead. Send us your term dates when you phone us on 0345 646 2711, or email photos, and we will fit the work in.
What do you do with what you remove?
It leaves the site with us at the end of the visit. During the work, it’s contained so the area stays clean.
Which sectors do you work in?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, plus food production and leisure sites.
How long will the unit be out of action?
Expect it to take one overnight shift for many single units, with bigger plant phased. Size, layout and how dirty it is decide the rest, and the quote will give you a clear idea.
How far ahead should we book?
It depends on the time you need and how big the job is. Tell us your preferred dates when you ask for a quote, and for anything urgent, ring our 24/7 emergency line.
Can you clean the ducts connected to the AHU?
Yes. Ductwork is cleaned through access panels, and any sections we cannot reach are noted in the report, with new panels fitted where necessary.
Is there a survey before the work?
Yes. For many sites, pictures and a few details are enough, and larger or hidden systems get a visit.
Multi-site and managed buildings
If you look after several sites, we can schedule visits across all of them on one quote. Every building has its own written report, so each one has its own record.
When the building owner and the occupier are different, it’s worth checking the lease for who maintains the systems. We can quote either party and send the paperwork to whoever needs it.