West Sussex · Air handling unit cleaning
AHU Cleaning in Crawley Down
One call covers cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Crawley Down, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Coils clogged with dust and debris
- Dirty filters cutting the airflow
- Fan sections that haven’t been cleaned in years
The process
Every visit runs to the same pattern: sheeting and protection first, make the system safe, carry out the AHU cleaning, clear away and leave you the report. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. We plan the journey to Crawley Down and bring what the job is likely to need.
- 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.
- The fan and drain tray are cleaned and the drain checked.
- We take after photos and issue the certificate and report.
Before we arrive
- Arrange a key holder or contact on site
- Let us know how we reach the system, including roofs, risers and plant rooms
- Mention any parking or loading restrictions
Getting a quote
Getting a quote doesn’t take long. Send a few details and pictures, and we typically reply with a fixed quote within one working day. If we need to see the system first, we book a survey around your hours.
Related advice
How we handle AHU cleaning in Crawley Down
We clean the parts of the unit where dirt and moisture gather: filters, coils, drain trays, fans and the internal panels. You get a TR19® certificate and a photo report showing the unit before and after. If you are dealing with dust-coated heating and cooling coils and rooms that smell stuffy when the system runs, we can put it right.
Smaller buildings around Crawley Down often keep their ventilation units in a roof void or plant cupboard, out of sight and easy to overlook. Filters, coils and drain trays need attention whatever the size of the unit.
We are 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, trading since 2009.
- Where
- Crawley Down (RH10)
- Region
- West Sussex
- Records
- Report and photos after the visit
- Quote
- Fixed quote, normally within a working day
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
Multi-site and managed buildings
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.
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements and we’ll come back with a fixed quote.
Crawley Down: your questions answered
Can you come to Crawley Down after we close?
Yes. We work evenings, overnight and at weekends. That way a site in Crawley Down does not have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
Do you work in villages like Crawley Down?
Yes. Villages and rural sites across the South East are part of our work, Crawley Down included. Photos of the system and directions to the site help us plan the visit.
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.
Where does the waste go?
We take it away when we go. During the work, it’s contained to keep the area clean.
How much does AHU cleaning cost?
It depends on the site, so we quote each one individually. To get one, call us on 0345 646 2711 or use the quote form and tell us about the site and its opening hours.
What should I send you?
Some photos and a quick description of the system plus the address and your hours. If we need more, we will ask.
Which accreditations do you hold?
We hold CHAS, SafeContractor and ISO 9001, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Are you insured?
Yes. We are fully insured, and the details are available on request.
Nearby places to Crawley Down
More services for Crawley Down
Aftercare tips
Aftercare is simple, and it helps at the next visit:
- Keep filter changes on time and recorded
- Keep inspection doors on the unit in good order
- Don’t store bins or materials near the intake
- Note any water around the unit or leaks below it
If the ductwork hasn’t been cleaned, consider it next. A clean unit feeding dirty ducts only solves half the problem, and we can survey both.
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.
Why deal with it now?
A light clean now is simpler than a heavy one later. Years of build-up make the job longer and harder, especially where there’s been moisture. Around Crawley Down, a kitchen or building out of action is missed right away.
We don’t list prices on the website, because each job is priced on what it involves. For a fixed quote, ring 0345 646 2711 or drop us a line, and we will explain what it covers.
What you get with us
- Fixed quotes, typically within one working day
- Every visit written up, with photos
- We’re fully insured
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Read what affects the cost and our accreditations.
Part by part
Drain trays
Standing water in a tray sits right where the air passes. We clean it and report anything about the tray or drain that needs fixing.
Internal casing and panels
The inside walls and floor of the casing collect dust and debris. Each section is cleaned from the intake through to the outlet.
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 won’t come clean, it’s best reported rather than tackled in-house. We’ll take a look and give you a fixed quote.
Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. Leave those to us.
What AHU cleaning looks like in Crawley Down
Food Standards Agency records list about 3 care, childcare and hospital premises registered as food businesses across Crawley Down and its immediate surroundings (about a mile and a half). Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. The nearest hospital to Crawley Down is Queen Victoria Hospital, about 3.5 miles east. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. Crawley Down, about 26 miles from central London, is within our usual area. The visit is fixed around your opening hours, not ours.
For buildings in and around Crawley Down, TR19® Air cleaning starts with an inspection. Hospitals such as Queen Victoria Hospital (about 3.5 miles east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Crawley Down are no different.
Crawley Down is about 3 miles west of East Grinstead, in West Sussex. Sites in Crawley Down 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. Crawley Down is one of 371 towns, villages and districts in West Sussex where we work for AHU cleaning. Our Brighton page covers sites nearby (20 miles or so).
Every address in RH10 is within our area for AHU cleaning, from busy streets to back roads. If you need AHU cleaning at premises on Station Road, Forest Close and Burleigh Way or anywhere close by, we can help. We also cover the places around Crawley Down: Furnace Wood (1 mile north), Snow Hill (1 mile north), Turners Hill (1 mile south), Domewood (1 mile north) and Felbridge (2 miles north-east). We also work in nearby towns such as Crawley (5 miles west), Horsham (11 miles west), Haywards Heath (9 miles south), Burgess Hill (12 miles south), East Grinstead (3 miles east) and Broadfield (6 miles west).
Near you in Crawley Down
Typical jobs here are in premises near Imberhorne School and the streets around them. For rail, the closest station is East Grinstead station, roughly 2.5 miles east of the centre. Other landmarks nearby include Queen Victoria Hospital (3.5 miles east) and Effingham Park Motor Museum (1.4 miles north-west). Open spaces near Crawley Down include Hedgecourt Lake.
What a clean won’t put right
To be straight with you, some problems need a different fix:
- Breakdowns that need a mechanical engineer
- Ductwork downstream of the unit, which is a separate clean
- Damaged coils beyond cleaning
Not sure which it is? You can call us on 0345 646 2711, or email photos and we will tell you honestly.
What we work on in Crawley Down
- Dampers and louvres
- Internal panels
- Drain trays
- Filter sections
- Heating and cooling coils
- Supply and extract fans