West Sussex · Air handling unit cleaning
AHU Cleaning in Clayton
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for Clayton, with a survey first and a report with pictures at the end. Ask us for a fixed quote.
- Debris and leaves in the fresh air intake
- Units that have only ever had filter changes
- Condensate trays that will not empty
AHU cleaning in Clayton
Units vary a lot in size, age and layout, from a small ceiling-mounted unit to a large rooftop plant. We look at the unit first, from pictures or a site visit, and give you a fixed quote before any cleaning starts. If you have odours coming through the supply air and dirty fans and fan housings, we can put it right.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, where filters and drain trays get forgotten.
Think of the report as the system’s health record: dated, with pictures, and showing what was done. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal and sits alongside the report.
- Where
- Clayton (BN6)
- Wider area
- West Sussex
- Reporting
- Written report with photos
- Quotes
- Fixed quote, typically within a working day
- When we work
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Reviewed
- 30 October 2026
Part by part
Internal casing and panels
Dust settles on every internal surface of the unit. Each section is cleaned from the intake through to the outlet.
Drain trays
Drain trays can rust and leak over time. Their condition goes into the report with pictures so you can decide on any repairs.
Nearby places to Clayton
What else we do in Clayton
Questions from Clayton
Do you work overnight in Clayton?
Yes, nights and weekends are routine for us. Your customers, staff or residents in Clayton needn’t be disturbed. Your opening times are the first thing we ask for.
Do you offer AHU cleaning in Clayton?
Yes, we work in Clayton and the places around it. To start, give us a ring on 0345 646 2711 or email us with a few photos of the system.
Can you come out in an emergency?
Yes. There’s a 24/7 emergency line for anything that cannot wait until a planned visit. Ring any time and tell us what’s happened.
What accreditations do you have?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we carry full insurance.
How much does AHU cleaning cost in Clayton?
We do not publish prices, because the cost depends on the job: the size of the system, its condition, access and when we can work. We fix the price before any work starts.
Which sectors do you work in?
All kinds of commercial and public premises: kitchens, offices, schools, healthcare, retail, leisure and food production. Work is timed around how each site runs.
How long does an AHU clean take?
It takes from a few hours for a compact unit to a day or more for a large one. The unit’s size and condition make the biggest difference, and we’ll confirm the time when we quote.
Are you insured?
Yes, fully. CHAS and SafeContractor accreditation sit alongside it, for sites that check contractor safety.
How we price AHU cleaning
Sites vary more than people expect. The main factors:
- The number of sites or systems
- The condition of the system
- Site rules, permits and inductions
- Working hours and out-of-hours timing
The cost depends on the size of the system, the condition it’s in and how easy it is to reach. We give you a fixed price before work begins, so there are no surprises.
Asking for a quote
To speed up the quote, please include:
- Problems your staff have spotted
- Photos showing the whole system and its surroundings
- The postcode and the type of business
- When the site is open and when it’s quiet
Quoting starts with a diagnosis, from your pictures and details or, where that isn’t enough, a survey on site. After that, you get a fixed price for the work so you know the cost before work begins.
Why it’s worth doing now in Clayton
If people in a building in Clayton complain about stuffy or smelly air, the AHU is worth looking at. Cleaning it deals with the cause rather than the symptom. Systems in rural buildings are often out of sight and out of mind.
Combining work into one visit or one programme can make for a more efficient booking. Mention every system or site you need covered, and you’ll get one fixed quote.
Why Clayton businesses choose us
- Full insurance on every job
- Out-of-hours work and a 24/7 emergency line
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Photo reports with every job
Looking after it afterwards
Looking after the system between visits is straightforward, and it makes the next visit easier:
- Keep inspection doors on the unit in good order
- Look at the condensate drain whenever the unit is serviced
- Plan the next inspection before the last report gets filed away
- Don’t store bins or materials near the intake
We recommend when the unit should next be inspected or cleaned, based on what we found. Under TR19® Air the timing is set by inspection and risk, not a fixed calendar.
Regular inspection under TR19® Air shows when cleaning is due, rather than waiting for a problem.
In-house cleaning or a specialist?
Staff cleaning and specialist work are not the same thing. Wiping filters daily and washing them weekly keeps the visible parts in order, but grease that has passed the filters is out of reach. That part needs specialist access and equipment.
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, alongside our reports.
When to call us in Clayton
Dirt in an AHU matters in two ways: 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.
Any of these means the system needs a check-up:
- Dust-coated heating and cooling coils
- Leaves and litter drawn into the unit
- Plant that has been serviced but not cleaned
- Odours coming through the supply air
Wherever a school like The Windmills Junior School has ducted ventilation, a half-term visit keeps the work out of lesson time.
What your quote should include
- Whether a written report and pictures are included
- How areas they can’t reach will be recorded
- Whether the quote is based on a survey or photos
- When the next visit should be, and why
Ventilation in Clayton buildings
Food Standards Agency data includes about 3 care, childcare and hospital premises and about 4 hotels and guest houses within about 1.5 miles of central Clayton. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. The Dene Hospital is the nearest hospital, about 3.9 miles north of Clayton. Clean air matters most where people are unwell, and that’s as true in a care home as in a hospital. At about 41 miles from central London, Clayton sits well inside the area we cover. Evening, overnight and weekend visits are all possible.
Healthcare ventilation, from large hospitals like The Dene Hospital (about 3.9 miles north) to small clinics, depends on clean filters, coils and ducts.
Clayton is about 3 miles south of Burgess Hill, in West Sussex. Across the BN6 area, we cover AHU cleaning for commercial sites. Clayton is one of 371 towns, villages and districts in West Sussex we cover for commercial clients.
Every address in BN6 is within our area for AHU cleaning, from busy streets to back roads. You will find streets such as Spring Lane, Underhill Lane and Brighton Road, all of which we cover for AHU cleaning. Nearby, we also carry out AHU cleaning in Keymer (1 mile north-east), Hassocks (1 mile north), Ditchling (2 miles north-east), Westmeston (2 miles east) and Hurst Wickham (2 miles north-west). We also work in nearby towns such as Crawley (14 miles north), Horsham (13 miles north-west), Worthing (13 miles south-west), Haywards Heath (6 miles north), Burgess Hill (3 miles north) and Shoreham-by-Sea (7 miles south-west).
What’s near Clayton
In Clayton, that means kitchens and buildings near Downlands Community School and The Greyhound Public House. For rail, the closest station is Hassocks station, about 1 mile north. Other landmarks nearby include Clayton Castle (less than half a mile south-west) and The Budding Foundation Museum of Gardening (0.9 miles north-west). Open spaces near Clayton include Wolstonbury Hill and Ladies Mile.
What we do, step by step
When we arrive, we check the system against the survey or the photos you sent. If anything is different, we talk it through with the person on site before carrying on. After that, the work takes anything from half a day for one small unit to several shifts for a plant room full of them. Photos of the system and how to reach it help us plan a visit to Clayton.
- We start with a survey of the unit and a fixed quote for the work.
- We arrange the shutdown with your staff and sheet the area.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- Drain trays are cleared and cleaned and the outlet checked.
- A TR19® certificate and photo report follow the clean.
Getting ready for the visit
- Let us know when the site is closed or quiet
- Clear loose items from the work area
- Mention any locked doors, roof access or ceiling voids
How to get a quote
To get a fixed quote, phone us on 0345 646 2711, or send details by email with the site type, your trading hours and a short description of the system. A few photos and your last certificate or report help a lot. You will usually have a quote within one working day.