West Sussex · Air handling unit cleaning
Air handling unit cleaning in Bewbush, West Sussex
AHU cleaning for businesses, landlords and public buildings in Bewbush. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Debris and leaves in the fresh air intake
- Dirty fans and fan housings
- Blocked condensate drains and slimy trays
How we price AHU cleaning
A fixed price needs a few facts first. We check:
- The number of sites or systems
- Site requirements such as sign-in and permits
- The size of the system
- When the work can happen, such as evenings, overnight or weekends
What you pay reflects the actual work. That’s why every job is surveyed first, and the price is agreed before we start.
Asking for a quote
Photos let us diagnose from a distance. The most useful are:
- Where the site is and what kind of site it is
- Any symptoms, from odd noises to smells or leaks
- The paperwork from the last visit, if you have it
- When the site is open and when it’s quiet
To help us quote: where the site is, what it is and its opening hours, photos of the system and the last certificate or report, if there is one. Once you have those, give us a ring on 0345 646 2711 or use the quote form.
About our AHU cleaning in Bewbush
Drain trays under cooling coils are meant to empty. If the outlet blocks, standing water and slime build up, in the airstream that feeds the building. Clearing and cleaning the tray is central to every AHU clean. If you’re dealing with fan sections that haven’t been cleaned in years and plant that needs cleaning after a refit, we can help, from heating and cooling coils, supply and extract fans and internal panels onwards.
Visits to a place like Bewbush are fitted around opening hours. The work is the same as in any town: inspect, clean, record.
Nothing is signed off by word of mouth: a dated report with photos of the work, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. It shows what was done and what, if anything, couldn’t be reached.
- Location
- Bewbush (RH11, RH12, RH10)
- Wider area
- West Sussex
- Reporting
- Report and pictures after the visit
- Quotes
- A fixed quote up front
- Working hours
- When your site is closed, plus a 24/7 line
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
AHU cleaning around Bewbush
The FSA’s food hygiene register lists about 13 schools, colleges and universities, about 13 caring premises (care homes, nurseries and hospitals) and about 4 hotels, B&Bs and guest houses with registered kitchens or food service in Bewbush and the streets around it, up to about 1.5 miles out. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. About 28 miles out from central London, Bewbush is part of the South East area we work across. The visit is fixed around your opening hours, not ours. Crawley Hospital is the nearest hospital, about 1.3 miles north-east of Bewbush. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
Healthcare ventilation, from large hospitals like Crawley Hospital (about 1.3 miles north-east) to small clinics, depends on clean filters, coils and ducts. Workplaces around Ifield station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts.
Bewbush is about 1 mile west of Crawley, in West Sussex. We carry out AHU cleaning for commercial premises of every kind in Bewbush and the rest of West Sussex. Bewbush is one of 371 places in West Sussex we cover for AHU cleaning. There’s also a page for Guildford, roughly 18 miles from Bewbush.
Here we cover the RH11, RH12 and RH10 postcode area for AHU cleaning. That includes premises on Eden Road, Byrd Road and Booth Road and the roads around them. Close by, we work in Gossops Green (1 mile north-east), Ifield (1 mile north-east), Ifieldwood (2 miles north), Lambs Green (2 miles north-west) and Rusper (3 miles north-west). Within a short drive, we also cover Horsham (5 miles south-west), Haywards Heath (9 miles south-east), Burgess Hill (11 miles south), East Grinstead (9 miles east), Billingshurst (12 miles south-west) and Roffey (4 miles south-west).
Landmarks near Bewbush
Around Bewbush, our work takes us to kitchens and buildings near Target Hill Park, The Windmill pub and St Wilfrid's Catholic School and the streets around them. Bewbush’s nearest station is Ifield station, roughly 0.8 miles north. Other landmarks nearby include Crawley Museum (1.6 miles north-east) and County Mall (1.6 miles east). For a walk, there’s Tilgate Lake.
Bewbush: your questions answered
Do you work in villages like Bewbush?
Yes, Bewbush is part of our area, however small the site. Photos of the system and directions to the site help us plan the visit.
Can you work in Bewbush outside opening hours?
Yes. We work evenings, overnight and at weekends. Your customers, staff or residents in Bewbush needn’t be disturbed. Just phone us on 0345 646 2711 or email us with your opening times and we’ll plan around them.
What is TR19?
TR19® is BESA’s specification for ventilation hygiene. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
Will we get paperwork for the AHU clean?
Yes, both a certificate and a report with pictures. The report also suggests when the unit should next be inspected.
How far ahead should we book?
It depends on the time you need and how big the job is. Tell us your preferred dates when you ask for a quote, and if it’s an emergency, call us any time.
What if parts of the system can’t be reached?
They’re listed in the report, never skipped quietly. You will know exactly which parts weren’t reached and why, and we can quote to improve the access.
Does the AHU have to be shut down for cleaning?
Yes. The unit has to be shut down and isolated before it’s opened. The shutdown is planned with whoever runs the building.
Can you look after several sites?
Yes. Tell us the addresses and what each needs and we’ll quote them together.
When to call us in Bewbush
Air handling units are normally tucked away on roofs, in plant rooms or above ceilings, so they’re easy to forget about. Months can pass without anyone looking inside.
Any of these means the system needs a check-up:
- Odours coming through the supply air
- Plant that has been serviced but not cleaned
- Blocked condensate drains and slimy trays
- Air handling units due a clean after building work
Wherever a school like The Bewbush Academy has ducted ventilation, a half-term visit keeps the work out of lesson time.
What to look for in a quote
- Exactly which parts of the system are covered
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- Whether they’re fully insured
- Whether VAT is included
Aftercare tips
No system stays clean for ever, but care slows the build-up. A few tips:
- Report musty smells from the vents straight away
- Make sure the unit’s access doors open easily
- Look at the condensate drain whenever the unit is serviced
- Change filters on schedule and log each change
Stick to the filter change schedule, 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.
How the job changes from site to site
Internal casing and panels
Damaged internal linings or loose panels can shed material into the air. Anything like that is recorded with pictures.
Rooftop and plant room units
Units outside are exposed to weather and windblown debris. The intake section gets particular attention.
How the visit works
We’re used to working while the site is closed. Evenings, nights and weekends are when much of our work happens, so the site can open as normal afterwards. The visit itself takes one overnight shift for many single units, with bigger plant phased. Tell us when your site near Bewbush is quiet and the visit will be booked for then.
- We survey the unit from pictures or on site and agree what’s included.
- We arrange the shutdown with your staff and sheet the area.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- Standing water and slime come out of the tray and the drain is checked.
- A TR19® certificate and photo report follow the clean.
Before we arrive
- Name a contact who can let us in at the agreed time
- Let us know how we reach the system, including roofs, risers and plant rooms
- Move anything stored near the system
Getting a quote
Need a price for AHU cleaning? Please give us a ring on 0345 646 2711, or email photos with a few details about the site. We will talk you through the work and give you a fixed quote before anything is booked.
Related advice
Multi-site and managed buildings
If you look after several sites, we can schedule visits across all of them on one quote. Each site gets its own report and pictures, so each one has its own record.
Multi-site operators often want one contractor and one number. We work across London and the South East, so visits at different addresses can be planned together and kept on a regular cycle.
In-house cleaning or a specialist?
Staff cleaning doesn’t replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but hidden parts of the system still need specialist attention.
When your team notices a problem 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 will take a look and send you a fixed quote.