West Sussex · Air handling unit cleaning
AHU Cleaning in Colworth
Our technicians work in Colworth on AHU cleaning. Fixed quotes, work around your opening hours and photo reports on every job.
- Intake sections clogged with outdoor debris
- Dust built up on fan impellers
- Blocked condensate drains and slimy trays
When something else is needed
Some problems need a different service or another trade:
- Coils that are corroded or leaking and need replacing
- Ventilation that was badly designed in the first place
- Problems with the unit’s controls or sensors
If in doubt, phone us on 0345 646 2711, or send details by email and we will say what we think.
What the work covers
- Supply and extract fans
- Heating and cooling coils
- Dampers and louvres
- Filter sections
- Internal panels
- Drain trays
AHU cleaning for kitchens and businesses in Colworth
Coils are where a lot of the dirt ends up. Dirt on the fins holds back air and makes the unit work harder to do the same job. We clean coils with methods suited to their condition, taking care not to damage the fins. If you’re dealing with odours coming through the supply air and plant that needs cleaning after a refit, we can help.
For a building in or near Colworth, access is agreed in advance and the visit is planned around the journey.
Insurers, fire officers and environmental health officers all look at records. So every job comes with a written report and photos, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Where
- Colworth (PO20)
- Wider area
- West Sussex
- Records
- Written report with pictures
- Quotes
- A fixed quote up front
- Working hours
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
What we are called out for in Colworth
Filters that aren’t changed or cleaned on time clog up, which cuts the airflow and can let air slip round the filter. Then the rest of the unit takes the load.
What we’re most often called out for:
- Intake sections clogged with outdoor debris
- Dirty filters cutting the airflow
- Rooms that smell stuffy when the system runs
- Air handling units never cleaned inside
For schools like Bartons Primary School, the holidays are the usual time to inspect and clean ventilation.
Before you book anyone
- What records you’ll receive afterwards
- Proof of insurance
- Whether the work can be done while the site is closed
- Which accreditations they hold, and whether you can check them
Between visits
A little care between visits keeps the system in better shape. We recommend:
- Keep inspection doors on the unit in good order
- Do not store bins or materials near the intake
- Don’t ignore odours coming through the grilles
- Check the drain tray is emptying during routine visits
The report shows each section of the unit before and after, and note any part we couldn’t get to. Any defects we noticed, like a leaking tray or damaged lining, are listed.
Regular inspection under TR19® Air shows when cleaning is due, rather than waiting for a problem.
Fixed quotes for AHU cleaning in Colworth
Your quote is based on your site. We consider:
- Working hours and out-of-hours timing
- The number of sites or systems
- How big the system is
- Whether we need access equipment or extra panels
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 play a part.
Asking for a quote
What to send for a quote:
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- The site address and the type of premises
- Detail shots of panels, filters and grilles
- Your opening hours and when the area is out of use
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, ring 0345 646 2711 or send us an email.
How it works
Everything the job needs comes with us, including protection sheets, the right tools and access kit. All we need from you is clear access and the right equipment switched off. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. A quick note on how to find the site and where to park makes a visit to Colworth run smoothly.
- The survey covers the unit, its access and how it can be shut down.
- The area is protected and the unit made safe.
- Dirt and debris are removed from each section.
- We clean the coils and clear the tray and drain.
- The unit is closed up and handed back, with a report to follow.
How to prepare
- Tell us about site rules, permits or sign-in
- Arrange a key holder or contact on site
- Have your last certificate or report to hand
Ask for a quote
Want a quote for AHU cleaning? Please phone us on 0345 646 2711 or send us an email with a few details about the site. We will explain what we’d do and send a fixed quote before you commit to anything.
Read more
Common questions in Colworth
Can ventilation in schools around Colworth be cleaned out of term?
Yes, and it’s the easiest time to do it. With about 4 schools and colleges on the FSA’s register within roughly a mile and a half of Colworth, it pays to plan holiday dates ahead. Just call us on 0345 646 2711, or email photos with your term dates and we’ll plan around them.
Can the work in Colworth be done at night or at weekends?
Yes, out-of-hours work is a big part of what we do. The work in Colworth can fit around your hours. Your opening times are the first thing we ask for.
Do you work in Colworth?
Yes. Our technicians work in Colworth, within the South East and London area we cover.
Does the AHU have to be shut down for cleaning?
Yes, while the clean is under way. We can work evenings, overnight or at weekends so the building is not left without ventilation when it’s busy.
How long will the unit be out of action?
Cleaning takes from a few hours for a compact unit to a day or more for a large one. Bigger units can be phased, and you can ring 0345 646 2711 or drop us a line to plan it.
Are you fully insured?
Yes, we are fully insured. CHAS and SafeContractor accreditation sit alongside it, for sites that check contractor safety.
Can one contract cover all our sites?
Yes. One number covers all your sites in our area, and visits can be set on a regular cycle.
What types of premises do you cover?
We work for restaurants, pubs, hotels, schools, colleges, hospitals, care homes, offices and shops, plus food production and leisure sites.
Why it’s worth doing now in Colworth
Dirt left in an air handling unit doesn’t stay in the unit. It moves on into the ductwork and out into the rooms, so cleaning the ducts without the unit only goes so far. Somewhere as small as Colworth, losing a kitchen or building to a fault is felt by everyone who uses it.
Whatever the type of site, the quote works the same way: how much there is, how we reach it, what state it’s in and when we can work. Call for a fixed quote and we’ll explain each part.
Why Colworth businesses choose us
- Every job surveyed first
- Trading since 2009
- CHAS and SafeContractor accredited, 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 the job changes from site to site
Heating and cooling coils
Dirt on a coil slows the air and makes it harder for the coil to heat or cool. A clean gets air moving through the coil properly again.
Rooftop and plant room units
Rooftop units take the weather, and intakes can collect leaves and debris. We clean the intake and first stage of filters along with the rest.
Also in Colworth
AHU cleaning in Colworth: local notes
Food Standards Agency records list about 4 schools, colleges and universities registered as food businesses in Colworth and the streets around it, up to about 1.5 miles out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Bognor Regis War Memorial Hospital is the nearest hospital, about 2.2 miles south-east of Colworth. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. About 54 miles out from central London, Colworth is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site.
Bognor Regis War Memorial Hospital, about 2.2 miles south-east, is the nearest hospital to Colworth, and healthcare sites of every size need their supply air kept clean.
Colworth is about 2 miles north of Bognor Regis, in West Sussex. We carry out AHU cleaning for commercial premises of every kind in Colworth and the rest of West Sussex. Our area takes in 371 places across West Sussex, large and small. Our Portsmouth page covers sites nearby, about 16 miles away.
Every address in PO20 is within our area for AHU cleaning, from busy streets to back roads. Close by, we work in Merston (1 mile west), Oving (2 miles north-west), Lagness (2 miles south-west), Runcton (2 miles west) and Shopwyke (2 miles north-west). Further out, we also cover Worthing (13 miles east), Chichester (4 miles north-west), Selsey (7 miles south-west), Littlehampton (8 miles east), Emsworth (10 miles west) and Rustington (9 miles east).
Around Colworth
We work in commercial kitchens and buildings around The Regis School and The Brooks Local Nature Reserve. The nearest railway station is Bognor Regis station, about 2.5 miles south-east. Other landmarks nearby include Bognor Regis Museum (2.7 miles south-east) and Tote Copse Castle (1.3 miles north-east).