West Sussex · Air handling unit cleaning
Crabtree AHU cleaning
Our technicians work in Crabtree on AHU cleaning. Fixed quotes, work around your opening hours and photo reports as standard.
- Blocked condensate drains and slimy trays
- Plant that needs cleaning after a refit
- Plant that has been serviced but not cleaned
Your questions about AHU cleaning in Crabtree
Is Crabtree within the area you cover?
Yes, we work in villages as well as towns, and Crabtree is covered. The journey is planned ahead, so a few details about the route help.
Can the work in Crabtree be done at night or at weekends?
Yes, we can come after you close and finish before you open. The work in Crabtree can fit around your hours. Tell us your opening hours when you ask for a quote.
How do you protect the area?
We start with protection: sheeting over floors, worktops and anything close to the work. The area is left tidy, with our waste taken away.
Do you do ventilation duct cleaning too?
Yes, the ductwork, grilles and diffusers the unit serves. The survey shows whether the ducts need cleaning now.
Can you look after several sites?
Yes. One number covers all your sites in our area, and visits can be set on a regular cycle.
How much notice should we give?
Book as early as you can for planned work, particularly if your next visit is nearly due. Emergencies are different, because our line is open 24/7.
What accreditations do you have?
We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
Where does the waste go?
It leaves the site with us when we go. During the work, it’s contained to keep the area clean.
How we handle AHU cleaning in Crabtree
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. Anything that collects inside the unit can end up in the rooms it serves, which is why we clean the unit itself, not just the ducts. If you are dealing with dust built up on fan impellers and coils clogged with dust and debris, we can put it right.
Work in a small place like Crabtree starts with agreeing access and timings.
Our accreditations include CHAS, SafeContractor and ISO 9001, and we are fully insured. On top of that, we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Where
- Crabtree (RH13)
- Wider area
- West Sussex
- Records
- Report and pictures after the visit
- Quote
- A fixed quote up front
- Working hours
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
Nearby places to Crabtree
Other services in Crabtree
Crabtree buildings and their air
At about 34 miles from central London, Crabtree sits well inside the area we cover. Visits are booked around your hours, evenings and weekends included. About 4.9 miles north-west of Crabtree is Horsham Hospital, the nearest hospital. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.
Wherever a school like Newells Preparatory School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Crabtree is about 5 miles south-east of Horsham, in West Sussex. For AHU cleaning in and around Crabtree, please call 0345 646 2711 or drop us a line for a fixed quote. We work across South East England and London, including Crabtree. Our area takes in 371 places across West Sussex, large and small. For sites nearby, see our Brighton page (14 miles or so).
AHU cleaning in RH13 follows the same survey, fixed quote and written report as everywhere else we cover. Local streets include Mill Lane, Peppersgate and Long Hill, and we cover them all for AHU cleaning. Close by, we work in Lower Beeding (1 mile north), Colwood (1 mile south-east), Monk's Gate (2 miles north-west), Plummers Plain (2 miles north-east) and Mannings Heath (2 miles north-west). Larger places within reach include Crawley (7 miles north-east), Horsham (5 miles north-west), Worthing (14 miles south-west), Haywards Heath (7 miles east), Burgess Hill (7 miles south-east) and East Grinstead (13 miles north-east).
Near you in Crabtree
Around Crabtree, our work takes us to kitchens and buildings near Leonardslee, among other places. For rail, the closest station is Horsham station, roughly 4.6 miles north-west. Nearby you will also find Horsham Hospital (4.9 miles north-west). For a walk, there’s Knepp Wildland.
What AHU cleaning can’t fix
Not every problem is solved by AHU cleaning, and we will tell you before we start. It will not put right:
- Ductwork downstream of the unit, which is a separate clean
- A system that is undersized for the building
- Building management system faults
If you’re not sure, just ring 0345 646 2711 or drop us a line and we will give you a straight answer before you book.
What we work on in Crabtree
- Supply and extract fans
- Heating and cooling coils
- Dampers and louvres
- Drain trays
- Internal panels
- Filter sections
Part by part
Rooftop and plant room units
Units on roofs and in plant rooms can be awkward to reach. Access is planned during the survey so the quote reflects it.
Drain trays
Drain trays can rust and leak over time. Their condition goes into the report with photos so you can decide on any repairs.
Multi-site and managed buildings
Multi-site operators often want one contractor and one number. We cover South East England and London, so visits at different addresses can be planned together and kept on a regular cycle.
Managing agents often deal with us directly. Send the address, what’s needed and how access works and we’ll come back with a fixed quote.
Keeping the system healthy
After the visit, a few habits help the work last:
- Diary the inspection date recommended in the report
- Store the TR19 paperwork where auditors can find it
- Change filters on schedule and log each change
- Do not ignore odours coming through the grilles
The report suggests a date for the next inspection or clean, taking into account how dirty it was. TR19® Air is risk-based, so the interval depends on the unit and how the building is used.
Keep the area around the intake clear. Anything around the intake is likely to be drawn in.
What we are called out for in Crabtree
Dirt in an AHU matters in two ways: the unit supplies the air people breathe, and a dirty unit has to work harder. For anyone working, learning or staying in a building in Crabtree, that’s air they breathe for hours at a time.
These are the problems we see most often:
- Blocked condensate drains and slimy trays
- Intake sections clogged with outdoor debris
- Rooms that smell stuffy when the system runs
- Air handling units never cleaned inside
Hospitals such as Horsham Hospital (about 4.9 miles north-west) show how much a building can rely on clean ventilation, and smaller healthcare sites near Crabtree are no different.
Before you book anyone
- Proof of accreditation you can verify
- Whether VAT is included
- Whether the whole system is included, or only the parts that are easy to reach
- When they can work, and whether that is outside your opening hours
The process
There are three stages on the day: getting the area ready, doing the work and signing it off. Set-up means sheeting and making equipment safe, and the sign-off is a written report with photos. The middle part takes longest, which takes a single shift for a typical unit, longer for large or heavily soiled ones. The timing of a visit to Crabtree is set by you, and the travel is our side of the planning.
- 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.
Getting ready for the visit
- Make sure someone can let us in and lock up afterwards
- Dig out any earlier paperwork for the system
- Let us know about permits to work or site inductions
Getting a quote
Getting a quote doesn’t take long. Send a few details and photos, and we normally reply with a fixed quote within one working day. If we need to see the system first, we book a survey around your hours.
Read more
Fixed quotes for AHU cleaning in Crabtree
Sites vary more than people expect. What affects the quote:
- How many systems or sites are involved
- Whether we need access equipment or extra panels
- Parking and loading at the site
- The condition of the system
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Call for a fixed quote and we’ll go through it with you.
Asking for a quote
A few details help us quote accurately. With your enquiry, please include:
- When the site is open and when it’s quiet
- The paperwork from the last visit, if you have it
- The roof, plant room or outside wall the system runs to
- Close-ups of filters, grilles, hatches or access panels
We do not publish a price list, because every site is different. We look at your system first, from pictures or on a visit, and then give you a fixed quote. To get going, give us a ring on 0345 646 2711 or send us an email.