West Sussex · Air handling unit cleaning
Air handling unit cleaning in Clapham, West Sussex
Professional AHU cleaning in and around Clapham, booked around your opening hours and finished with a written report and photos.
- Intake sections clogged with outdoor debris
- Condensate trays that will not empty
- Filters that are clogged or overdue
How we handle AHU cleaning in Clapham
A cooling coil drips condensate into a tray that should drain away. If the outlet blocks, standing water and slime build up, in the airstream that feeds the building. Cleaning and clearing it is a key part of the job. We are often asked to deal with dirty fans and fan housings and blocked condensate drains and slimy trays, across drain trays, dampers and louvres and filter sections.
Work in a small place like Clapham starts with agreeing access and timings.
A written report with pictures follows each visit, so there’s a dated record of the work. Where the work is a TR19® Grease clean, the certificate is issued through the BESCA Vent Hygiene Elite portal.
- Place
- Clapham (BN13)
- Wider area
- West Sussex
- Reporting
- Report and pictures after the visit
- Quotes
- A fixed price before any work starts
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What AHU cleaning can’t fix
Not every problem is solved by AHU cleaning, and we’d rather say so up front. It does not solve:
- Mechanical faults with motors, belts or bearings
- Coils that are corroded or leaking and need replacing
- The supply and extract ducts, quoted separately
If you’re not sure, just call 0345 646 2711 or drop us a line and we’ll give you a straight answer.
What the work covers
- Supply and extract fans
- Internal panels
- Filter sections
- Heating and cooling coils
- Dampers and louvres
- Drain trays
AHU cleaning around Clapham
Food Standards Agency data includes about 4 schools, colleges and universities and about 4 hospitals, care homes and childcare premises in Clapham and the streets around it, up to about 1.5 miles out. Busy, occupied buildings like these are where clean supply air matters most. At about 48 miles from central London, Clapham sits well inside the area we cover. Visits are booked around your hours, evenings and weekends included. About 3.4 miles south-west of Clapham is Zachary Merton 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.
Healthcare ventilation, from large hospitals like Zachary Merton Hospital (about 3.4 miles south-west) to small clinics, depends on clean filters, coils and ducts.
Clapham is about 3 miles north-west of Worthing, in West Sussex. We carry out AHU cleaning for commercial premises of every kind in Clapham and the rest of West Sussex. Across West Sussex, we cover 371 places, Clapham among them. For sites nearby, see our Brighton page, about 14 miles away.
Postcode districts we cover here for AHU cleaning: BN13. If you need AHU cleaning at premises on The Street, Long Furlong and Church Close or a nearby road, we can help. Being close to the A280, Clapham is simple for us to get to at any hour. We also cover Patching (1 mile north-west), Cote (1 mile east), Hammerpot (2 miles west), Durrington (2 miles south-east) and Hangleton (2 miles south). Larger places within reach include Worthing (3 miles south-east), Bognor Regis (11 miles west), Chichester (14 miles west), Littlehampton (4 miles south-west), Shoreham-by-Sea (8 miles east) and Lancing (6 miles east).
What’s near Clapham
In Clapham, that means kitchens and buildings near Clapham Wood, The Fox pub and Chatsmore Catholic High School. The closest station to Clapham is Goring-By-Sea station, roughly 2.1 miles south of the centre. Other landmarks nearby include Museum of Sussex Folklore (2.9 miles south-east) and Old Castle (2.9 miles south-east). For a walk, there’s WWT Arundel and Highdown Hill.
In-house cleaning or a specialist?
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, next to our reports.
Staff cleaning does not replace a specialist visit; it supports it. Regular in-house cleaning slows the build-up, but hidden parts of the system still need specialist attention.
Landlords, agents and facilities managers
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, which may be the employer, owner, landlord, FM or managing agent. With shared responsibility, good records help everyone.
From a single site to a large estate, the standard is the same: a survey first, a fixed quote, the work timed around the site and a report with pictures.
Also in Clapham
What affects the quote in Clapham
There’s no set price list, because no two systems are the same. The quote depends on:
- One-off work versus a regular cycle
- Travel, parking and unloading
- The times the site is available
- The condition of the system
No two sites are the same, so we price each one individually. Size, access, the condition of the system and when we can work all make a difference.
Helping us quote
Photos and a few facts are often enough to price the work. Useful things to send:
- Close-ups of filters, grilles, hatches or access panels
- Wide pictures of the system and the area around it
- Problems your staff have spotted
- Your last certificate, test record or report
Here’s what helps us quote: where the site is, what it is and its opening hours, a few photos and the last certificate or report, if there is one. Then call 0345 646 2711 or drop us a line.
Common questions in Clapham
Do you work at weekends in Clapham?
Yes, nights and weekends are routine for us. The work in Clapham can fit around your hours. Tell us your opening hours when you ask for a quote.
Do you cover smaller places like Clapham?
Yes, Clapham is part of our area, however small the site. Just mention lanes, gates or anything else about the site when you book.
How far ahead should we book?
That depends on the slot you want and the size of the job. Mention your preferred dates with your enquiry, and for anything urgent, ring our 24/7 emergency line.
Can one contract cover all our sites?
Yes. Send the list of sites and the work at each and we’ll quote them together.
Do you do ventilation duct cleaning too?
Yes. We reach the ducts through access panels, and any sections we cannot reach are noted in the report, and new panels can be fitted.
What types of premises do you cover?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, as well as food production and leisure sites.
Do you offer emergency callouts?
Yes. Our emergency line runs 24/7, for problems that can’t wait. Call us any time and explain what’s happened.
What if parts of the system can’t be reached?
They’re listed in the report, never skipped quietly. The report says which parts couldn’t be reached and why, along with a quote to put access in.
Leave it or put it right?
If people in a building in Clapham complain about stuffy or smelly air, the AHU is worth looking at. A clean tackles the source instead of masking it. With notice, the visit to Clapham can be fitted around your bookings and events.
When the work has to happen, how we reach it and how big the site is can all change the price. We take each of them into account and give you a fixed price before work begins.
Why Clapham businesses choose us
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Out-of-hours work and a 24/7 emergency line
- Accredited under CHAS and SafeContractor, with ISO 9001
- Fixed quotes, usually within one working day
Take a look at how cleaning jobs are priced or our accreditations and certificates.
How it works
On the day, we arrive at the time agreed with you, which is often after service, overnight or at a weekend. Equipment that has to be off is switched off and allowed to cool before work begins, and floors and nearby surfaces are sheeted. On site, it takes a single shift for a typical unit, longer for large or heavily soiled ones. Seeing the system in photos first means the trip to Clapham can be planned properly.
- First we agree when the unit can be switched off, including evenings or weekends.
- Before cleaning, each section is photographed.
- We work through the unit from the intake to the outlet.
- We finish with the fan section and the drain tray.
- We take after pictures and issue the certificate and report.
Preparing for the visit
- Mention any parking or loading restrictions
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Tell us about site rules, permits or sign-in
Get a fixed quote
Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, you get a fixed price before we start.
Advice
When to call us in Clapham
Air handling units are usually tucked away on roofs, in plant rooms or above ceilings, so they’re easy to forget about. Months can pass without anyone looking inside.
If you notice any of these, it’s worth a diagnosis:
- Intake sections clogged with outdoor debris
- Plant that needs cleaning after a refit
- Coils clogged with dust and debris
- Filters that are clogged or overdue
School buildings such as Clapham and Patching CofE Primary School are normally done in the holidays, so classrooms are not disturbed.
Comparing quotes
- Which accreditations they hold, and whether you can check them
- Whether VAT is included
- Whether they’re fully insured
- What’s included in the scope, part by part