Surrey · Air handling unit cleaning
Air handling unit cleaning in Crondall, Surrey
Air handling unit cleaning for businesses, landlords and public buildings in Crondall. CHAS, SafeContractor and ISO 9001, and fully insured.
- Units needing a clean before a new tenant or handover
- Stale or musty smells from the ventilation
- Blocked condensate drains and slimy trays
The process
There are three stages on the day: getting the area ready, doing the work and signing it off. Getting ready means protecting surfaces and switching off what needs to be off, and the sign-off is a written report with photos. The middle part takes longest, and that takes one overnight shift for many single units, with bigger plant phased. Somewhere like Crondall, lanes, gates and parking are worth mentioning in advance.
- First we agree when the unit can be switched off, including evenings or weekends.
- We take before photos of each section of the unit.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- We finish with the fan section and the drain tray.
- After pictures are taken and the certificate issued.
Before we arrive
- Mention any sign-in, permit or induction we need
- Make sure someone can let us in and lock up afterwards
- Plan for cooking equipment or plant to be off before we arrive
Ask for a quote
For AHU cleaning in Crondall, call 0345 646 2711 or use the quote form. Tell us what kind of premises it is and when it’s open, and send pictures or your last report if you can. We normally send a fixed quote within one working day.
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How we handle AHU cleaning in Crondall
An air handling unit is the heart of a building’s ventilation: it draws air in, filters it, heats or cools it and pushes it round the ductwork. Whatever builds up inside it travels with that air, which is why we clean the unit itself, not just the ducts. If you are dealing with fan sections that haven’t been cleaned in years and condensate trays that won’t empty, we can put it right.
Work in a small place like Crondall starts with agreeing access and timings.
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, with full insurance on top.
- Where
- Crondall (GU10)
- Wider area
- Surrey
- Paperwork
- Written report with pictures
- Quote
- Fixed quote, normally within a working day
- Working hours
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
Different parts, different methods
Rooftop and plant room units
Rooftop units take the weather, and intakes can collect leaves and debris. We clean the intake and first stage of filters along with the rest.
Drain trays
Older trays can corrode and start leaking. Their condition goes into the report with photos so you can decide on any repairs.
What affects the quote in Crondall
Sites vary more than people expect. What affects the quote:
- One-off work versus a regular cycle
- The condition of the system
- The number of sites or systems
- 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.
What we need to know
To speed up the quote, send us:
- Detail shots of panels, filters and grilles
- Any symptoms, from odd noises to smells or leaks
- The times we could work without disrupting the site
- The roof, plant room or outside wall the system runs to
Quotes are quick. Call or email with a few details and you’ll normally have a fixed price within one working day. Where a survey is needed, we arrange a time that suits the site.
When to call us in Crondall
Whatever surrounds a building in Crondall, the air drawn into its AHU carries dust, pollen and debris. The intake section and first filters take the brunt, and some travels further into the unit.
Any of these means the system needs a check-up:
- Units needing a clean before a new tenant or handover
- Rooms that smell stuffy when the system runs
- Dust built up on fan impellers
- Dust-coated heating and cooling coils
Healthcare ventilation, from large hospitals like Fleet Community Hospital (about 3.8 miles north) to small clinics, depends on clean filters, coils and ducts.
What your quote should include
- When the next visit should be, and why
- Whether the work can be done while the site is closed
- What’s included in the scope, part by part
- Whether the quote is based on a survey or pictures
Also near Crondall
What else we do in Crondall
Managing agents and facilities teams in Crondall
We also work for facilities teams across offices, schools and healthcare across Surrey. Larger estates can be phased building by building around the people who use them.
Running several sites is easier with one contractor. We work across London and the South East, so a run of sites can go into one programme and kept on a regular cycle.
Ventilation in Crondall buildings
Going by the FSA’s register, there are about 3 care, childcare and hospital premises serving food in Crondall 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. We cover Crondall, about 38 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. The nearest hospital to Crondall is Fleet Community Hospital, about 3.8 miles north. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.
For schools like Crondall Primary School, the holidays are the usual time to inspect and clean ventilation.
Crondall is about 3 miles south of Fleet, in Surrey. If you need AHU cleaning in Crondall, please give us a ring on 0345 646 2711, or email photos for a fixed quote. Our area covers London and the South East, Crondall included. Crondall is one of 395 places in Surrey where we work for commercial clients. You can also see our page for Guildford, about 12 miles away.
Every address in GU10 is covered for AHU cleaning, from the main roads to the quietest streets. Streets in the area include Church Street, The Borough and Glebe Road, and we cover them all for AHU cleaning. If your site is just outside Crondall, we cover Redlands (1 mile north-east), Bowling Alley (1 mile north), Dora's Green (1 mile east), Warren Corner (1 mile east) and Mill Lane (1 mile north). Further out, we also cover Guildford (12 miles east), Woking (14 miles north-east), Camberley (9 miles north-east), Farnham (3 miles south-east), Frimley (8 miles north-east) and Haslemere (12 miles south-east).
Landmarks near Crondall
Locally, jobs take us to businesses close to The Plume Of Feathers Public House and St Nicholas' School and the streets around them. The nearest railway station is Farnham station, roughly 3.3 miles south-east. Well-known places in the area include Museum of Farnham (2.8 miles south-east) and Hart Shopping Centre (3.4 miles north). The countryside around Crondall includes Beacon Hill and Aunt's Pool.
In-house cleaning or a specialist?
If your staff spot something between visits, such as dripping grease, a noisy fan, a smell or a filter that will not come clean, they should report it rather than try to fix it. We’ll take a look and send you a fixed quote.
Logging matters as much as cleaning. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, next to our reports.
Keeping the system healthy
Looking after the system between visits is straightforward, and it helps at the next visit:
- Check the drain tray is emptying during routine visits
- Stick to the filter change plan
- Don’t store bins or materials near the intake
- Diary the inspection date recommended in the report
You receive a TR19® certificate and a photo report after the clean. They belong in the plant or maintenance log.
Change or clean filters on time. Overloaded filters let more dirt through to the coils and fan.
FAQs for Crondall
Can you work in Crondall outside opening hours?
Yes, out-of-hours work is a big part of what we do. The work in Crondall can fit around your hours. When you call us on 0345 646 2711 or drop us a line, mention when the site is quiet.
Can you clean school ventilation in Crondall during the holidays?
Yes, and it’s the easiest time to do it. There are about 2 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Crondall. Booking early in the term gives the best choice of holiday dates.
What does TR19 mean?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It covers how systems are inspected, cleaned and checked and expects a risk-based approach.
How often do AHUs need cleaning?
Under TR19® Air, cleaning is led by inspection and risk rather than a set calendar. Each report suggests when the unit should next be looked at.
Is Crondall in your area?
Yes. We cover Crondall and across Surrey, as part of our work across South East England and London. For a fixed quote, call us on 0345 646 2711, or send details by email.
Can one contract cover all our sites?
Yes. Our area covers London and the South East, so we can schedule a run of sites on one programme. Every site has its own report.
How far ahead should we book?
Earlier is better, particularly for night and weekend visits. We usually quote within one working day, and there’s a 24/7 line for emergencies.
Which kinds of sites do you work on?
Any commercial site with kitchens or ventilation, from a small pub to a hospital. We work with hotels, schools, care homes, offices, retail and leisure sites.