West Sussex · Air handling unit cleaning
AHU Cleaning in Horsham
For air handling unit cleaning in Horsham, one call is all it takes, from survey to sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Intake sections clogged with outdoor debris
- Units needing a clean before a new tenant or handover
- Blocked condensate drains and slimy trays
Horsham: your questions answered
Is AHU cleaning available in Horsham?
Yes. We work across London and the South East, and Horsham is part of that. To start, give us a ring on 0345 646 2711 or email us with a few photos of the system.
Can a school’s ventilation in Horsham be done out of term time?
Yes, and it’s the easiest time to do it. There are about 7 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Horsham. Send us your term dates when you call 0345 646 2711 or email us, and we will fit the work in.
What do you do with what you remove?
Waste is contained during the work and removed when we leave, from grease and debris to used cleaning water. We do not leave it behind.
Can you look after several sites?
Yes. Send the list of sites and the work at each and we’ll quote them together.
How do you protect the area?
Protection goes down first: sheeting over floors, worktops and anything close to the work. The area is left tidy, with our waste taken away.
Are you fully insured?
Yes, we are fully insured. CHAS and SafeContractor accreditation sit alongside it, for sites that check contractor safety.
How long does it take to clean an air handling unit?
It takes anything from half a day for one small unit to several shifts for a plant room full of them. Size, layout and how dirty it is decide the rest, and the quote will give you a clear idea.
Will you repair the fan or motor?
Motors, belts, controls and coils that need repair are a job for your maintenance contractor. We will flag anything we notice during the clean.
About our AHU cleaning in Horsham
An air handling unit is the heart of a building’s ventilation: air is pulled in, filtered, conditioned and sent out through the ducts. 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 have dirty filters cutting the airflow and dirty coils holding back the airflow, we can help.
Larger buildings in Horsham can have several air handling units serving different floors. Each has filters, coils, a drain tray and a fan that need attention, and standing water in a drain tray is a common finding.
A written report with photos follows every visit, so there’s a dated record of the work. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Location
- Horsham (RH12, RH13, RH20, BN44)
- Wider area
- West Sussex
- Reporting
- Written report with pictures
- Quotes
- A fixed quote up front
- Working hours
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
Between visits
Good habits slow the build-up between visits. A few tips:
- Note any water around the unit or leaks below it
- Clear leaves and litter away from the intake
- Stick to the filter change plan
- Do not ignore odours coming through the grilles
Restart the unit with your site team or maintenance contractor once we have finished. Keep an eye on the condensate drain over the next few days to make sure it stays clear.
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.
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, before we quote.
Fans and fan sections
Dust on a fan impeller adds weight and wear. Cleaning keeps it running as intended.
What affects the cost of AHU cleaning
Every site gets its own quote. This is what makes a difference:
- Where the site is and how we reach it
- When the work can happen, such as evenings, overnight or weekends
- Whether it’s a one-off visit or part of a schedule
- Site rules, permits and inductions
Leaving it longer rarely makes the work cheaper. Build-up, wear and faults tend to get worse, not better, and a neglected system can mean more work. If you’re unsure, phone us on 0345 646 2711 or send us an email for straight advice and a fixed quote.
Helping us quote
Many jobs can be priced from pictures and some basics. Useful things to send:
- The postcode and the type of business
- Photos showing the whole system and its surroundings
- The times we could work without disrupting the site
- Your last certificate, test record or report
To help us quote: where the site is, what it is and its opening hours, pictures of the system and the last certificate or report, if there is one. Once you have those, call 0345 646 2711, or email photos.
Landlords, agents and facilities managers
Records are where multi-site compliance often slips. Each visit produces a dated report with pictures, ready to show insurers, fire officers or EHOs.
Where a tenant occupies the premises but the landlord owns the building, the lease normally sets out who maintains what. We can quote either party, and the report can go to both.
Leave it or put it right?
If people in a building in Horsham complain about stuffy or smelly air, the AHU is worth looking at. Cleaning it deals with the cause rather than the symptom. If an insurer or inspector asks when the work was last done, an up-to-date certificate answers the question.
When the work has to happen, how we reach it and how big the site is all affect the cost. We take each of them into account and give you a fixed price before work begins.
Why us?
- In business since 2009
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Accredited under CHAS and SafeContractor, with ISO 9001
- Fully insured
See how cleaning jobs are priced and our accreditations and certificates.
How it works
There are three stages on the day: set-up, the treatment itself and the sign-off. Set-up means sheeting and making equipment safe, while signing off means the written report and pictures. Most of the time goes on the work itself, and that takes a single shift for a typical unit, longer for large or heavily soiled ones. Access to the roof, the plant room and a parking space are worth sorting out before a visit in Horsham.
- We start with a survey of the unit and a fixed quote for the work.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- Filters, coils, fan section and casing are cleaned in turn.
- Drain trays are cleared and cleaned and the outlet checked.
- A TR19® certificate and photo report follow the clean.
How to prepare
- Dig out any earlier paperwork for the system
- Mention any parking or loading restrictions
- Tell us about site rules, permits or sign-in
Get a fixed quote
We don’t publish a price list, because every site is different. We look at your system first, from pictures or on a visit, and then send you a fixed quote. To get going, ring 0345 646 2711, or send details by email.
Advice
Places near Horsham
Also in Horsham
What AHU cleaning looks like in Horsham
The FSA’s food hygiene register lists about 7 schools, colleges and universities, about 7 care, childcare and hospital premises and about 4 hotels, B&Bs and guest houses with registered kitchens or food service within roughly a mile and a half of the centre of Horsham. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. Horsham’s nearest hospital, Horsham Hospital, is about within half a mile north-west. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. At about 31 miles from central London, Horsham sits well inside the area we cover. The visit is fixed around your opening hours, not ours.
Healthcare ventilation, from large hospitals like Horsham Hospital (about within half a mile north-west) to small clinics, depends on clean filters, coils and ducts. If you manage shops or offices close to Horsham station, a TR19® Air inspection shows whether the ductwork needs cleaning.
Horsham is about 31 miles south of London, in West Sussex. Every kind of commercial site in Horsham, AHU cleaning is something we can help with. We can work out of hours so trading isn’t interrupted. Our West Sussex coverage runs to 371 places, Horsham among them. Our Guildford page covers sites nearby, about 17 miles away.
Work in RH12, RH13, RH20 and BN44 is surveyed, quoted and booked the same way as anywhere else. If you need AHU cleaning at premises on Station Road, London Road and Market Square or anywhere close by, we can help. Being close to the A24 and A29, Horsham is simple for us to get to for AHU cleaning. Neighbouring places we cover for AHU cleaning include Tower Hill (1 mile south-west), Broadbridge Heath (2 miles west), Holbrook (2 miles north), Warnham (2 miles north-west) and Southwater (3 miles south). Within a short drive, we also cover Crawley (7 miles north-east), Haywards Heath (11 miles south-east), Burgess Hill (11 miles south-east), East Grinstead (14 miles east), Broadfield (5 miles east) and Storrington (11 miles south-west). Being one of West Sussex’s larger places, Horsham has a wide mix of commercial premises, all within our area for AHU cleaning.
What’s near Horsham
We work in commercial kitchens and buildings around Millais School, Warnham Park and Kingslea Primary School, among other places. There’s a railway station in Horsham itself: Horsham station. A little further out are Christs Hospital School Museum (2.4 miles south-west) and Horsham Hospital (less than half a mile north-west). Not far away are Warnham LNR.
What your team can do, and what needs us
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’ll take a look and send you a fixed quote.
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but the parts you cannot see still need a specialist at the right interval.