Surrey · Air handling unit cleaning
Air handling unit cleaning in Thursley, Surrey
Need AHU cleaning in Thursley? We diagnose first, fix the price and book the work around your hours, finishing with a written report and photos.
- Air handling units with blocked filters
- Odours coming through the supply air
- Condensate trays that won’t empty
AHU cleaning in Thursley
Units vary a lot in size, age and layout, from a small ceiling-mounted unit to a large rooftop plant. Every job starts with a survey, from pictures or on site, followed by a fixed quote, so you know where you stand. The work covers drain trays, internal panels and filter sections, and common reasons people get in touch are odours coming through the supply air and dirty coils holding back the airflow.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
It’s worth checking any contractor’s accreditations. We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, with full insurance on top.
- Location
- Thursley (GU8)
- Wider area
- Surrey
- Paperwork
- Photo report after every visit
- Quotes
- A fixed price before any work starts
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Multi-site and managed buildings
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Where a system serves more than one tenant, such as a shared riser, it helps to agree who arranges the work, and we’re happy to quote for all of it.
Keeping records across a portfolio is half the battle. Each visit produces a dated report with pictures, so you can show an insurer or inspector what was done at each site.
Between visits
Looking after the system between visits is straightforward, and it makes the next visit easier:
- Keep the certificate and photo report with the plant records
- Report water on the plant room floor
- Check the drain tray is emptying during routine visits
- Plan the next inspection before the last report gets filed away
You receive a TR19® certificate and a photo report after the clean. They belong in the plant or maintenance log.
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.
Also near Thursley
Also in Thursley
Staff cleaning versus specialist work
Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. That is our job.
Away from the kitchen, the in-house job is mainly checking: clear grilles, a log of filter changes and reporting anything odd. The inside of ducts and units needs a specialist.
AHU cleaning around Thursley
At about 36 miles from central London, Thursley sits well inside the area we cover. A survey and a fixed quote come first, then the visit at a time that suits you. Milford Hospital is the nearest hospital, about 4 miles east of Thursley. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
If you run a surgery, dental practice or care home near Thursley, clean ventilation matters as much to you as to a hospital like Milford Hospital (about 4 miles east). Around Thursley, as anywhere, ventilation cleaning begins with an inspection.
Thursley is about 5 miles south-east of Farnham, in Surrey. We provide AHU cleaning for commercial premises of every kind in Thursley and the rest of Surrey. Our Surrey coverage runs to 395 places, and Thursley is one of them. You can also see our page for Guildford, roughly 9 miles from Thursley.
All of GU8 is within our area for AHU cleaning, from busy streets to back roads. That includes premises on The Street, The Lane and Dyehouse Road and nearby roads. Neighbouring places we cover for AHU cleaning include Pitch Place (1 mile west), Rushmoor (2 miles west), Tilford Common (2 miles north-west), Green Cross (2 miles south-west) and Elstead (2 miles north). We also work in nearby towns such as Guildford (9 miles north-east), Woking (13 miles north-east), Camberley (13 miles north), Farnham (5 miles north-west), Frimley (11 miles north) and Haslemere (4 miles south).
Local landmarks in Thursley
In Thursley, that means kitchens and buildings near Three Horseshoes pub. The nearest railway station is Witley station, roughly 3.1 miles east of the centre. Nearby you will also find Milford Hospital (4 miles east). The countryside around Thursley includes Upper Lake and Gibbet Hill.
What we do, step by step
We are used to working while the site is closed. A lot of visits happen overnight or at weekends, so a kitchen or building can carry on as usual the next day. The visit itself takes one overnight shift for many single units, with bigger plant phased. A few photos of the system help us make the most of a visit to a place like Thursley.
- We look at the unit and the plant area during the survey.
- 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.
- The unit is closed up and handed back, with a report to follow.
Before we arrive
- Tell us the best time to work, such as after service or at a weekend
- Find the previous report, if there is one
- Arrange a key holder or contact on site
How to get a quote
The quickest way to a quote is to send photos: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Add the site type and your opening hours, and many jobs can be priced from that alone.
Advice
Common questions in Thursley
Can the work in Thursley be done at night or at weekends?
Yes, out-of-hours work is a big part of what we do. The site is handed back ready to open. Your opening times are the first thing we ask for.
Do you work in villages like Thursley?
Yes, Thursley is part of our area, however small the site. A survey first, from pictures or a visit, means we arrive with the right kit.
Which parts of an air handling unit do you clean?
All the internal parts the air touches, from the intake and filters through the coils and fan to the outlet. You get a photo report showing each part before and after.
Can you look after several sites?
Yes. You deal with one contact for every site across London and the South East, and visits can be set on a regular cycle.
How much notice should we give?
For planned work, earlier is better, particularly if your next visit is nearly due. Emergencies are different, because our line is open 24/7.
Will the ventilation be off while you clean?
Yes. Cleaning needs the unit off and isolated, so we plan it for a time that suits the building.
Which kinds of sites do you work on?
We work for restaurants, pubs, hotels, schools, colleges, hospitals, care homes, offices and shops, as well as food production and leisure sites.
Where does the waste go?
We contain it and take it with us. We collect grease, debris and waste water as we go rather than letting it spread.
Part by part
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.
Heating and cooling coils
Cooling coils stay damp in use, so dirt on them can turn sticky. The coil and its drain tray are cleaned as one job.
What affects the cost of AHU cleaning
Sites vary more than people expect. What affects the quote:
- Parking and loading at the site
- What state the system is in
- How big the system is
- Access, including roofs, risers and ceiling voids
When the work has to happen, how we reach it and how big the site is all affect the cost. We take each of them into account, and the price is fixed before we start.
Asking for a quote
Photos let us diagnose from a distance. The most useful are:
- Photos showing the whole system and its surroundings
- The postcode and the type of business
- The paperwork from the last visit, if you have it
- When the site is open and when it’s quiet
Quoting starts with a diagnosis, from your pictures and details or, where that is not enough, a survey on site. After that, you get a fixed price for the work so you know the cost before work begins.
What a clean won’t put right
Some problems need a different service or another trade:
- Dirty ducts beyond the unit itself
- Breakdowns that need a mechanical engineer
- Leaking heating or cooling coils
If you’re not sure, just ring 0345 646 2711 or send us an email and we’ll give you a straight answer before booking.
Parts of the system we cover
- Drain trays
- Dampers and louvres
- Heating and cooling coils
- Supply and extract fans
- Internal panels
- Filter sections