West Sussex · Air handling unit cleaning
Warminghurst AHU cleaning
Air handling unit cleaning for commercial sites in Warminghurst and across West Sussex. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Blocked condensate drains and slimy trays
- Coils clogged with dust and debris
- Air handling units never cleaned inside
In-house cleaning or a specialist?
Staff cleaning doesn’t 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.
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, and that is where we come in.
How we handle AHU cleaning in Warminghurst
An air handling unit is the heart of a building’s ventilation: air is pulled in, filtered, conditioned and sent out through the ducts. Whatever builds up inside it travels with that air, which is why we clean the unit itself, not just the ducts. If you have filters that are clogged or overdue and units needing a clean before a new tenant or handover, we can help.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, which makes them easy to overlook.
The paperwork matters as much as the work. You get a written report with pictures after every visit, covering the work done, any areas we couldn’t access and a recommended next date. File it in your maintenance log so it’s to hand when an insurer or inspector asks.
- Location
- Warminghurst (RH20)
- Region
- West Sussex
- Paperwork
- Written report with photos
- Quotes
- A fixed quote up front
- Hours
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
The process
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. The visit takes half a day to a full day per unit, with large plant planned over several shifts. Photos of the system and how to reach it help us plan a visit to Warminghurst.
- 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.
Getting ready for the visit
- Name a contact who can let us in at the agreed time
- Tell us where we can park and unload
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
How to get a quote
Getting a quote does not take long. Call or email with a few details and you’ll typically have a fixed price within one working day. Where a survey is needed, we arrange a time that suits the site.
Advice
Landlords, agents and facilities managers
Managing agents often deal with us directly. Send the address, what’s needed and how access works, and we will send a fixed quote.
For anyone managing more than one site, we can schedule visits across all of them on one quote. Every building has its own written report, so records stay tidy.
Also near Warminghurst
What else we do in Warminghurst
Warminghurst buildings and their air
At about 41 miles from central London, Warminghurst sits well inside the area we cover. Visits are booked around your hours, evenings and weekends included.
School buildings such as Ashington CofE Primary School are usually done in the holidays, so classrooms are not disturbed.
Warminghurst is about 8 miles north of Worthing, in West Sussex. We provide AHU cleaning for commercial premises of every kind in Warminghurst and the rest of West Sussex. We cover 371 places across West Sussex, large and small. Our Brighton page covers sites nearby, about 14 miles away.
Here we cover the RH20 postcode area for AHU cleaning. Neighbouring places we cover for AHU cleaning include Thakeham (1 mile north-west), Abingworth (1 mile west), Goose Green (1 mile north), Heath Common (1 mile south-west) and West Chiltington (2 miles north-west). Larger places within reach include Crawley (15 miles north-east), Horsham (10 miles north-east), Worthing (8 miles south), Haywards Heath (14 miles east), Burgess Hill (12 miles east) and Littlehampton (10 miles south-west).
Local landmarks in Warminghurst
Around Warminghurst, our work takes us to kitchens and buildings near Rydon Community College. The closest station to Warminghurst is Pulborough station, about 4.7 miles west of the centre. Well-known places in the area include The Storrington And District Museum (2.2 miles south-west). The countryside around Warminghurst includes Chanctonbury Hill and Knepp Wildland.
Common problems we fix in Warminghurst
An AHU’s intake draws in outdoor air and everything in it: dust, pollen, leaves and debris. The intake section and first filters take the brunt, and some travels further into the unit.
What we are most often called out for:
- Fan sections that haven’t been cleaned in years
- Leaves and litter drawn into the unit
- Blocked condensate drains and slimy trays
- Rooms that smell stuffy when the system runs
For buildings in and around Warminghurst, TR19® Air cleaning starts with an inspection.
What your quote should include
- What’s included in the scope, part by part
- When they can work, and whether that is outside your opening hours
- Whether a written report and pictures are included
- What insurance they carry
Warminghurst: your questions answered
Do you work at weekends in Warminghurst?
Yes. We work evenings, overnight and at weekends. The site is handed back ready to open. Tell us your opening hours when you ask for a quote.
Can you get to a site in Warminghurst?
Yes, smaller places are covered as well as towns. Let us know about access, parking and anything unusual about getting there when you book.
Do you clean the ductwork as well?
Yes. Ductwork is cleaned through access panels, with anything inaccessible recorded, with new panels fitted where needed.
Can you come out in an emergency?
Yes. Our emergency line runs 24/7 for anything that cannot wait until a planned visit. Ring any time and tell us what’s happened.
Are you insured?
Yes. We carry full insurance and have been trading since 2009.
How much does AHU cleaning cost in Warminghurst?
Every site is different, so each gets its own fixed quote. To get one, call us on 0345 646 2711 or email us and tell us about the site and its opening hours.
How long does an AHU clean take?
Cleaning takes half a day to a full day per unit, with large plant planned over several shifts. Bigger units can be phased, and you can call us on 0345 646 2711 or use the quote form to plan it.
How do you keep the site clean during the work?
We start with protection: sheeting over floors, worktops and anything close to the work. The area is left tidy, with our waste taken away.
When it’s something else
AHU cleaning can’t fix everything, and we will tell you before any work starts. It won’t put right:
- Building management system faults
- Leaking heating or cooling coils
- A system that is undersized for the building
If in doubt, phone us on 0345 646 2711 or email us and we will say what we think.
What the work covers
- Supply and extract fans
- Drain trays
- Heating and cooling coils
- Dampers and louvres
- Internal panels
- Filter sections
How the job changes from site to site
Internal casing and panels
We open each section through its doors and close them securely when we are done, and check every one is shut.
Rooftop and plant room units
Units outside are exposed to weather and windblown debris. The intake section gets particular attention.
Looking after it afterwards
No system stays clean for ever, but care slows the build-up. A few tips:
- Keep filter changes on time and recorded
- Make sure the unit’s access doors open easily
- Watch for drips or damp patches near the plant
- Check the drain tray is emptying during routine visits
Photos in the report cover the filters, coils, drain tray, fan and casing, along with anything we couldn’t reach. Any defects we noticed, like a leaking tray or damaged lining, are listed.
Regular filter changes are the best protection an AHU has. Overloaded filters let more dirt through to the coils and fan.