West Sussex · Air handling unit cleaning

Air handling unit cleaning in Billingshurst, West Sussex

One call covers AHU cleaning in Billingshurst, from survey to sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.

  • Units needing a clean before a new tenant or handover
  • Condensate trays that won’t empty
  • Stale or musty smells from the ventilation

Book AHU cleaning in Billingshurst

What a clean won’t put right

It’s worth knowing the limits before booking:

  • Problems with the unit’s controls or sensors
  • A system that’s undersized for the building
  • Leaking heating or cooling coils

If in doubt, ring 0345 646 2711, or send details by email and we will say what we think.

Parts of the system we cover

  • Drain trays
  • Filter sections
  • Dampers and louvres
  • Heating and cooling coils
  • Internal panels
  • Supply and extract fans

AHU cleaning for kitchens and businesses in Billingshurst

We clean the parts of the unit where dirt and moisture gather: the filter section, heating and cooling coils, drain trays, fan and casing. You get a TR19® certificate and a photo report showing the unit before and after. If you have plant that needs cleaning after a refit and coils clogged with dust and debris, we can put it right.

In a place like Billingshurst, air handling units are often tucked into roof spaces or small plant rooms, where they’re easy to forget. Every unit, large or small, has filters, coils and a drain tray to keep clean.

Our accreditations include CHAS, SafeContractor and ISO 9001, and we are fully insured. On top of that, we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we have been trading since 2009.

Place
Billingshurst (RH14)
Wider area
West Sussex
Reporting
Photo report after each visit
Quotes
A fixed quote up front
When we work
Nights, weekends or holidays to suit you
Telephone
0345 646 2711
Checked
30 October 2026
The Duct Doctor team standing beside their branded white and blue vans

How it works

We turn up 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 we start, and floors and nearby surfaces are sheeted. The work itself takes from a few hours for a compact unit to a day or more for a large one. Tell us about any gates, ladders or locked plant areas at your site near Billingshurst when you book.

  1. We survey the unit from photos or on site and agree what’s included.
  2. The unit is shut down with your site team and the area protected.
  3. We clean or change the filters as agreed, then clean the coils, fan and internal panels.
  4. Standing water and slime come out of the tray and the drain is checked.
  5. We close up the unit and send the certificate and before and after photos.

How to prepare

  • Let us know about permits to work or site inductions
  • Plan for cooking equipment or plant to be off before we arrive
  • Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas

Ask for a quote

For a fixed quote, give us a ring on 0345 646 2711 or email us and tell us the type of site, your opening hours and roughly what the system looks like. A few pictures and your last certificate or report help a lot. You’ll usually have a quote within one working day.

Get a price

Related advice

Landlords, agents and facilities managers

Running several sites is easier with one contractor. We work across London and the South East, so a run of sites can go into one programme and kept on a regular cycle.

When the building owner and the occupier are different, the lease normally sets out who maintains what. We are happy to deal with either side, and the report can go to both.

Part by part

Heating and cooling coils

Dirt on a coil slows the air and makes it harder for the coil to heat or cool. Cleaning restores the open path through the fins.

Drain trays

Drain trays can rust and leak over time. We record their condition with photos so repairs can be planned.

Signs you need AHU cleaning in Billingshurst

Mechanical servicing keeps a unit running, but it doesn’t always include cleaning the inside. So a unit can be well maintained and still dirty.

Most sites get in touch after spotting something like this:

  • Odours coming through the supply air
  • Dust-coated heating and cooling coils
  • Debris and leaves in the fresh air intake
  • Dirty fans and fan housings

For schools like Billingshurst Primary School, the holidays are the usual time to inspect and clean ventilation.

What your quote should include

  • When the next visit should be, and why
  • Whether a written report and photos are included
  • What’s included in the scope, part by part
  • What hours they’ll be on site

How to choose an extract cleaning contractor

Aftercare tips

To keep the system working properly between visits:

  • Clear leaves and litter away from the intake
  • Report stiff or damaged access doors
  • Keep filter changes on time and recorded
  • Report water on the plant room floor

When we have closed the unit up, it can be restarted with your site team. Check the drain tray is emptying over the first few days to make sure it stays clear.

Regular inspection under TR19® Air shows when cleaning is due instead of leaving it to guesswork.

AHU cleaning in Billingshurst: local notes

Billingshurst is about 36 miles from central London, well within the area we cover across London and the South East. Visits are booked around your hours, evenings and weekends included.

Workplaces around Billingshurst station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts.

Billingshurst is about 6 miles south-west of Horsham, in West Sussex. Anywhere in RH14, we can carry out AHU cleaning at your premises. Billingshurst is one of 371 towns, villages and districts in West Sussex we cover for AHU cleaning. Our Guildford page covers sites nearby, about 16 miles away.

Work in RH14 is surveyed, quoted and booked the same way as anywhere else. You will find streets such as High Street, Station Road and Lower Station Road, all of which we cover for AHU cleaning. Nearby, we also carry out AHU cleaning in Coneyhurst (2 miles south-east), Newpound Common (2 miles north-west), Five Oaks (2 miles north-east), The Haven (3 miles north) and Slinfold (4 miles north-east). Within a short drive, we also cover Crawley (13 miles north-east), Horsham (6 miles north-east), Worthing (14 miles south), Haywards Heath (15 miles east), Burgess Hill (15 miles east) and Littlehampton (15 miles south).

Landmarks near Billingshurst

Locally, jobs take us to businesses close to The Railway Inn and The Weald School, among other places. Billingshurst has its own railway station: Billingshurst station. Not far away are The Mens.

Map of Billingshurst © OpenStreetMap contributors

What affects the cost of AHU cleaning

You will get a fixed price before any work starts. It takes into account:

  • A single visit or a regular plan
  • The times the site is available
  • Whether we need access equipment or extra panels
  • The number of sites or systems

Several systems or sites on one quote can make for a more efficient booking. Tell us about everything you’d like looked at and we’ll price it together.

What to send for a quote

To speed up the quote, please include:

  • Any symptoms, from odd noises to smells or leaks
  • Where the site is and what kind of site it is
  • The paperwork from the last visit, if you have it
  • Detail shots of panels, filters and grilles

Want a quote for AHU cleaning? Please call us on 0345 646 2711 or drop us a line with a few details about the site. We’ll explain what we’d do and send a fixed quote before anything is booked.

Billingshurst questions

Will you come out to Billingshurst?

Yes, we work in villages as well as towns, and Billingshurst is covered. Photos of the system and directions to the site help us plan the visit.

Is Billingshurst in your area for AHU cleaning?

Yes, Billingshurst is covered. You can call 0345 646 2711 or email us and let us know what needs doing.

Which sectors do you work in?

All kinds of commercial and public premises: from restaurants, pubs and hotels to schools, hospitals, care homes, offices, shops and food production sites. Work is timed around how each site runs.

How far ahead should we book?

Book as early as you can for planned work, particularly if your next visit is nearly due. Emergencies are different, because our line is open 24/7.

Can you clean without disrupting the building?

Yes, wherever it helps the building. Tell us when the unit can go off and we’ll work to that.

How do you keep the site clean during the work?

Floors and surfaces near the work are sheeted before work begins, and anything we remove is contained. At the end, the area is cleaned down.

Which accreditations do you hold?

We hold CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.

Can you fix a faulty AHU?

We clean the unit and flag faults rather than repair them, with photos where it helps.

BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London