Oxfordshire · Air handling unit cleaning
Air handling unit cleaning in Crawley, Oxfordshire
AHU cleaning for Crawley, from a team that has been trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Fan sections that haven’t been cleaned in years
- Intake sections clogged with outdoor debris
- Dirty coils holding back the airflow
What staff can safely do
When your team notices a problem between visits, such as dripping grease, a noisy fan, a smell or a filter that will not come clean, it’s best reported rather than tackled in-house. We can diagnose it and quote.
Keep a record of what your team does. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, alongside our reports.
About our AHU cleaning in Crawley
Where a building in Crawley has had little more than filter changes, there may be dirt on the coils, fan and casing that nobody has looked at. A full AHU clean takes in the whole unit. The work covers internal panels, filter sections and dampers and louvres, and the jobs we see most are dirty filters cutting the airflow and stale or musty smells from the ventilation.
In rural areas, ventilation units are often in roof voids or outbuildings, which makes them easy to overlook.
We’re CHAS and SafeContractor accredited, we hold ISO 9001 and we’re fully insured. On top of that, we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we have been trading since 2009.
- Place
- Crawley (OX29)
- Region
- Oxfordshire
- Reporting
- Report and pictures after the visit
- Price
- A fixed price before any work starts
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Common problems we fix in Crawley
It matters for two reasons: the unit supplies the air people breathe, and a dirty unit has to work harder. For the people using the building every day, that’s the air they breathe for hours on end.
Signs it’s time to call us include:
- Rooms that smell stuffy when the system runs
- Air handling units never cleaned inside
- Dirty coils holding back the airflow
- Blocked condensate drains and slimy trays
Around Crawley, as anywhere, ventilation cleaning begins with an inspection.
Before booking anyone
- If the quote is a fixed price or an estimate
- Whether the work can be done while the site is closed
- If they look at the system before pricing
- How areas they cannot reach will be recorded
When something else is needed
Some problems need a different service or another trade:
- Coils that are corroded or leaking and need replacing
- Controls and BMS settings that run the unit
- Dirty ducts beyond the unit itself
If in doubt, ring 0345 646 2711 or send us an email and we will say what we think before booking.
What we work on in Crawley
- Filter sections
- Drain trays
- Supply and extract fans
- Internal panels
- Dampers and louvres
- Heating and cooling coils
How the job changes from site to site
Heating and cooling coils
Heating and cooling coils have tightly packed fins that trap fine dust. We clean them with care so the fins are not damaged.
Drain trays
Drain trays can rust and leak over time. We record their condition with photos so you can decide on any repairs.
The process
Your trading hours come first. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. Once we’re in, the area is sheeted and anything that has to be off is turned off and cooled, and the work takes anything from half a day for one small unit to several shifts for a plant room full of them. If you can send photos, we can arrive in Crawley knowing what to expect.
- 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.
- The fan and drain tray are cleaned and the drain checked.
- We take after photos and issue the certificate and report.
Preparing for the visit
- Let us know how we reach the system, including roofs, risers and plant rooms
- Tell us about site rules, permits or sign-in
- Find the previous report, if there is one
Getting a 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, you get a fixed price before work begins.
Read more
Your questions about AHU cleaning in Crawley
Can ventilation in schools around Crawley be cleaned out of term?
Yes, out-of-term visits are normal for schools. With about 6 schools and colleges on the FSA’s register within roughly a mile and a half of Crawley, it pays to plan holiday dates ahead. Send us your term dates when you call 0345 646 2711 or drop us a line, and we will fit the work in.
Can you work in Crawley outside opening hours?
Yes, out-of-hours work is a big part of what we do. The site is handed back ready to open. Let us know the hours you are closed and we will book within them.
Do you offer emergency callouts?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line, and we’ll advise on what to do next.
Is there a survey before the work?
Yes. For many sites, photos and a few details are enough, while bigger or harder-to-see systems are surveyed on site.
What do you need from me for a quote?
A short description and a few pictures, with the address and opening hours. If we need more, we’ll ask.
Can we book visits on a schedule?
Yes. Plans on a 3, 6 or 12-monthly cycle are available, depending on what the system needs.
Does the AHU have to be shut down for cleaning?
Yes, while the clean is under way. Out-of-hours work is available so the building is not left without ventilation when it’s busy.
What accreditations do you have?
We hold CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
Keeping the system healthy
No system stays clean for ever, but care slows the build-up. A few tips:
- Stick to the filter change plan
- Keep the area around the fresh air intake clear
- Report water on the plant room floor
- Check the drain tray is emptying during routine visits
Keep filter changes on schedule between cleans, as that does more than anything to keep the unit clean. Log every change so it’s easy to see when the next is due.
Make sure access doors and panels on the unit open easily. If a section is hard to get into, it tends not to get checked.
Places near Crawley
Also in Crawley
What AHU cleaning looks like in Crawley
Food Standards Agency data includes about 6 schools, colleges and universities and about 6 caring premises (care homes, nurseries and hospitals) within roughly a mile and a half of the centre of Crawley. Where buildings like these have air handling units, filters, coils and drain trays need regular attention.
Wherever a school like Hailey Church of England Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Crawley is about 1 mile north-west of Witney, in Oxfordshire. Wherever you are in the OX29 postcode area, we cover AHU cleaning for commercial sites. Our area takes in 443 places across Oxfordshire, from busy centres to quieter spots. Oxford is in our area too, around 12 miles away.
AHU cleaning in OX29 is surveyed, quoted and booked the same way as anywhere else. That includes premises on Witney Hill, Farm Lane and Foxburrow Lane and nearby roads. Neighbouring places we cover for AHU cleaning include Leafield (2 miles north-west), Swinbrook (4 miles west), Ascott d'Oyley (4 miles north-west), Ascott-under-Wychwood (5 miles north-west) and Ascott Earl (5 miles north-west). Within a short drive, we also cover Oxford (12 miles east), Abingdon-on-Thames (13 miles south-east), Carterton (5 miles south-west), Wantage (15 miles south), Grove (14 miles south) and Faringdon (11 miles south).
Local landmarks in Crawley
Around Crawley, our work takes us to kitchens and buildings near Wood Green School and The Lamb Inn. The closest station to Crawley is Finstock station, roughly 3.6 miles north-east of the centre. Other landmarks nearby include Cogges Manor Farm Museum (1.9 miles south-east). The countryside around Crawley includes Blenheim Farm.
Why deal with it now?
Dirty coils and fans make the unit strain to move the same air. The result is extra wear and a building that does not feel as comfortable, and a planned clean is far less disruptive than a breakdown. If the system at a site near Crawley fails, there may be nowhere nearby to move to.
What you pay reflects the actual work. That’s why we survey first, from photos or on site, and why the quote is fixed before any work starts.
Why book with us
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- In business since 2009
- Out-of-hours work and a 24/7 emergency line
- Fixed quotes from a survey or pictures
Take a look at what affects the cost and our accreditations.