London and the South East

AHU Cleaning in West Sussex

AHU cleaning in all 371 towns and villages of West Sussex, done evenings, overnight or at weekends, with a fixed quote before we start and a report with photos afterwards.

Need AHU cleaning in West Sussex?

Call 0345 646 2711

Request a fixed quote

Towns we cover in West Sussex

Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces. Choose your town from the list to see local details, and get in touch for a quick quote.

Main towns

AHU cleaning in West Sussex: how it works

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. The work covers drain trays, dampers and louvres and supply and extract fans, and people most often call us about air handling units due a clean after building work and air handling units never cleaned inside.

We start by comparing what we find with the survey or your pictures. If anything is different, we talk it through with the person on site before carrying on. After that, the work takes from a few hours for a compact unit to a day or more for a large one.

We agree a shutdown window that suits the building.
We take before pictures of each section of the unit.
Filters, coils and internal surfaces are cleaned from intake to discharge.
We finish with the fan section and the drain tray.
We take after photos and issue the certificate and report.

What you will pay

Putting the work off seldom saves money. Problems in a system tend to grow, and a neglected system can mean more work. If you’re unsure, phone us on 0345 646 2711 or drop us a line for straight advice and a fixed quote.

Why choose Duct Doctor

One contact for all your sites in London and the South East
BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
A written report with pictures after every visit
Trading since 2009

Ask for a quote

To get a fixed quote, phone us on 0345 646 2711 or use the quote form with the site type, your trading hours and a short description of the system. Photos and the last report, if you have one, make the quote quicker. You’ll usually have a quote within one working day.

Local landmarks in Crawley

Locally, jobs take us to businesses close to Friary Church of St Francis and St Anthony, St Wilfrid's Catholic School and Tilgate Park, among other places. Nearby too are The George Hotel (less than half a mile north), Three Bridges Junior School (within half a mile south-east) and St Francis of Assisi Catholic Primary School (within half a mile south-east). There’s a railway station in Crawley itself: Crawley station. A little further out are Crawley Hospital (0.5 miles north-west) and County Mall (less than half a mile north-east). For a walk, there’s Tilgate Lake.

AHU cleaning around West Sussex

Across West Sussex, from Crawley, Horsham and Worthing outwards, ventilation systems serve offices, schools, surgeries, hotels and care homes. The work starts with an inspection, and cleaning follows where it’s needed.

London and the South East cover everything from city basements to rural kitchens. The same TR19® standard applies to all of them, in West Sussex and beyond. West Sussex includes coastal places, where salt in the air speeds up corrosion of roof-level equipment. We look for corrosion as well as dirt on coastal sites.

Crawley: For workplaces around Crawley station with mechanical ventilation, cleaning can be done in the evening or at weekends. If you manage a school such as Three Bridges Junior School, ventilation cleaning is best booked for the holidays.

Why it fails

Wherever there’s a cooling coil, there’s condensate. A blocked outlet or a badly sloped tray leaves standing water, and that’s where slime and odours start.

Common reasons sites call us include:

Fan sections that haven’t been cleaned in years
Intake sections clogged with outdoor debris
Condensate trays that will not empty
Air handling units due a clean after building work

Why deal with it now?

Facilities teams are often asked for evidence that the ventilation is looked after. A TR19® certificate and photo report give you that, ready to show anyone who asks.

What your quote should include

How VAT is shown on the quote
What records you’ll receive afterwards
When they can work, and whether that’s outside your opening hours
Whether the price is fixed

Looking after it afterwards

A little care between visits keeps the system in better shape. We recommend:

Watch for drips or damp patches near the plant
Change filters on schedule and log each change
Make sure condensate is draining away
Make sure the unit’s access doors open easily

If the ductwork hasn’t been cleaned, consider it next. Cleaning the unit and ducts together gives the best result, and we can survey both.

Regular filter changes are the best protection an AHU has. Once filters clog, dirt starts getting past them.

What your team can do, and what needs us

For ventilation and air handling systems, in-house care is mostly about checks: clear grilles, a log of filter changes and reporting anything odd. Cleaning inside ducts and units is specialist work.

If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, they should report it rather than try to fix it. We can diagnose it and quote.

What affects the quote in West Sussex

Your quote is based on your site. We consider:

Site requirements such as sign-in and permits
Where the site is and how we reach it
The scale of the work
The condition we find in the survey

The price reflects the work, not guesswork. That’s why every job is surveyed first, and the price is agreed before work begins.

Asking for a quote

To speed up the quote, please include:

Problems your staff have spotted
How we’d reach plant on a roof or in a plant room
Your last certificate, test record or report
Wide pictures of the system and the area around it

Some systems can be priced from pictures; others need a survey. 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.

West Sussex: your questions answered

Can one contract cover all our sites?

Yes. Send the list of sites and the work at each and we’ll quote them together.

How much does AHU cleaning cost?

It depends on the site, so we quote each one individually. For a quote, call 0345 646 2711, or email photos with the site type, opening hours and a few photos.

Which accreditations do you hold?

BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001. We are fully insured and have been trading since 2009.

Is West Sussex in your area?

Yes. Our area takes in London and the counties of South East England, and that includes West Sussex.

What’s TR19?

A BESA specification, with two parts that matter most here: TR19® Grease for kitchen extracts and TR19® Air for supply and extract systems. It isn’t law, but it’s the benchmark.

Do you offer emergency callouts?

Yes. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line and we’ll talk you through the next steps.

How much notice do you need?

Earlier is better, particularly for night and weekend visits. We typically quote within one working day, and emergencies are covered by our 24/7 line.