West Sussex · Air handling unit cleaning
Air handling unit cleaning in Balcombe Lane, West Sussex
For cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Balcombe Lane, one call is all it takes, from survey to sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Dirty filters cutting the airflow
- Air handling units never cleaned inside
- Air handling units due a clean after building work
How we price AHU cleaning
Some jobs are bigger than they look, and some smaller. What affects the quote:
- When the work can happen, such as evenings, overnight or weekends
- What state the system is in
- How big the system is
- Parking and loading at the site
No two sites are the same, so each one gets its own fixed quote. Size, access, the condition of the system and when we can work all play a part.
What we need to know
When you call or email, it’s useful to have:
- Where the site is and what kind of site it is
- Any symptoms, from odd noises to smells or leaks
- Any access panels or hatches you can see
- The paperwork from the last visit, if you have it
The quickest way to a quote is to send photos: the system from a couple of angles, plus any access panels or hatches. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.
How we handle AHU cleaning in Balcombe Lane
Our AHU cleaning covers sites in Balcombe Lane and the rest of West Sussex, in offices, schools, hospitals, care homes and retail. Units are cleaned when the site can spare them, often evenings, overnight or weekends. If you have air handling units never cleaned inside and blocked condensate drains and slimy trays, we can help.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, where filters and drain trays get forgotten.
Accreditations are easy to claim and worth checking. Ours are BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001, and we’re fully insured.
- Location
- Balcombe Lane (RH17)
- Region
- West Sussex
- Records
- Photo report after every visit
- Price
- A fixed quote up front
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
Leave it or put it right?
When the unit is clean, less dirt reaches the ducts, so the whole system stays cleaner for longer. It also means the next inspection has less to find. Systems in rural buildings are often out of sight and out of mind.
One small site or a whole estate, we price it on the same basis: the work involved, the access and the timing. The price is fixed before work begins.
Why choose Duct Doctor in Balcombe Lane
- We are fully insured
- A single point of contact for sites across the South East and London
- We diagnose before we treat
- Each visit written up, with pictures
Read what affects the cost or our accreditations and certificates.
Balcombe Lane: your questions answered
Can ventilation in schools around Balcombe Lane be cleaned out of term?
Yes, holiday work suits schools best. The FSA’s register shows about 2 schools and colleges with food registrations within roughly a mile and a half of Balcombe Lane. Send us your term dates when you give us a ring on 0345 646 2711 or use the quote form, and we’ll fit the work in.
Can you work in Balcombe Lane outside opening hours?
Yes, out-of-hours work is a big part of what we do. That way a site in Balcombe Lane doesn’t have to lose a day’s trading. Let us know the hours you are closed and we’ll book within them.
Can you come out in an emergency?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line and we will talk you through the next steps.
How long will the unit be out of action?
The work takes one overnight shift for many single units, with bigger plant phased. Bigger units can be phased, so give us a ring on 0345 646 2711, or send details by email to talk it through.
Can you quote from photos?
Typically, yes. Send a few wide pictures plus close-ups of panels, filters or grilles, and a fixed quote normally follows within one working day. If photos aren’t enough, we’ll survey first.
Do you work in Balcombe Lane?
Yes. Our technicians work in Balcombe Lane, within the South East and London area we cover.
Are you fully insured?
Yes. We carry full insurance, and we have been trading since 2009.
Does the AHU have to be shut down for cleaning?
Yes. Cleaning needs the unit off and isolated, so we plan it for a time that suits the building.
What AHU cleaning looks like in Balcombe Lane
About 4.1 miles north-west of Balcombe Lane is Crawley 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. Balcombe Lane, about 29 miles from central London, is within our usual area. The visit is fixed around your opening hours, not ours.
If you manage a school such as Balcombe CofE Controlled Primary School, ventilation cleaning is best booked for the holidays.
Balcombe Lane is about 4 miles south-east of Crawley, in West Sussex. If you need AHU cleaning in Balcombe Lane, it’s easy to get a fixed quote: please call 0345 646 2711 or drop us a line. We work across South East England and London, including Balcombe Lane. Balcombe Lane is one of 371 towns, villages and districts in West Sussex we cover for AHU cleaning. You can also see our page for Brighton, about 17 miles away.
We work across RH17 for AHU cleaning and the roads nearby. We also cover Balcombe (1 mile south), Worth Abbey (2 miles north-east), Furnace Green (2 miles north-west), Pease Pottage (3 miles west) and Staplefield (3 miles south-west). We also work in nearby towns such as Crawley (4 miles north-west), Horsham (8 miles west), Haywards Heath (5 miles south), Burgess Hill (8 miles south), East Grinstead (6 miles north-east) and Broadfield (4 miles north-west).
Local landmarks in Balcombe Lane
Typical jobs here are in premises near Oriel High School. The nearest railway station is Balcombe station, about 1.3 miles south. Nearby you’ll also find Crawley Museum (3.9 miles north-west) and Waterbury Castle (4.8 miles south-east). Green spaces nearby include Blunts Wood and Paiges Meadow and Tilgate Lake.
What we’re called out for in Balcombe Lane
Wherever there’s a cooling coil, there’s condensate. If the drain tray outlet blocks or the tray does not fall properly, water stands in it, and that’s where slime and odours start.
Common reasons sites call us include:
- Units that have only ever had filter changes
- Air handling units due a clean after building work
- Dirty filters cutting the airflow
- Condensate trays that won’t empty
Hospitals such as Crawley Hospital (about 4.1 miles north-west) show how much a building can rely on clean ventilation, and smaller healthcare sites near Balcombe Lane are no different.
Before you book anyone
- Whether the quote shows VAT
- When the next visit should be, and why
- If the quote is a fixed price or an estimate
- What happens if part of the system cannot be accessed
Between visits
Think of this as the after-treatment advice, in brief:
- Clear leaves and litter away from the intake
- Keep filter changes on time and recorded
- Store the TR19 paperwork where auditors can find it
- Book the next check in line with the report
The report suggests a date for the next inspection or clean, based on what we found. TR19® Air is risk-based, so the interval depends on the unit and how the building is used.
Make the drain tray part of every maintenance visit. A drain that is cleared early never gets to the slime stage.
What AHU cleaning cannot fix
We will not sell you work that doesn’t address the problem, so these are the things it will not cover:
- A system that’s undersized for the building
- Faulty motors, drives or bearings
- Building management system faults
If you’re not sure, just call us on 0345 646 2711 or use the quote form and we will give you a straight answer.
What the work covers
- Heating and cooling coils
- Filter sections
- Drain trays
- Supply and extract fans
- Internal panels
- Dampers and louvres
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What happens on the day
Everything the job needs comes with us, from protective sheeting to tools and access equipment. You only need to give us clear access and switch off what needs to be off. On site, the work takes from a few hours for a compact unit to a day or more for a large one. Photos of the system and how to reach it help us plan a visit to Balcombe Lane.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
Preparing for the visit
- Find the previous report, if there is one
- Make sure someone can let us in and lock up afterwards
- Let us know how we reach the system, including roofs, risers and plant rooms
Ask for a quote
Need a price for AHU cleaning? Please phone us on 0345 646 2711, or email photos and tell us about the site. We will talk you through the work and send you a fixed quote before you commit to anything.
Advice
For landlords and multi-site operators
Where a tenant occupies the premises but the landlord owns the building, the lease normally sets out who maintains what. We can quote either party, and the report can go to both.
If you look after several sites, we can schedule visits across all of them on one quote. Each site gets its own report and photos, so records stay tidy.