West Sussex · Air handling unit cleaning
Dragons Green AHU cleaning
AHU cleaning across Dragons Green and nearby, timed so the site keeps working and signed off in writing with pictures.
- Drain trays holding standing water
- Plant that has been serviced but not cleaned
- Dust built up on fan impellers
Why act early in Dragons Green
Standing water in a drain tray does not clear itself. Leave it and you risk overflows, leaks into the space below and odours carried round the building. Dealing with it early keeps the clean straightforward. Planning a trip to Dragons Green ahead is easier for everyone than a rushed one.
When the work has to happen, how we reach it and how big the site is all affect the cost. We take each of them into account, and the price is fixed before we start.
Why choose Duct Doctor in Dragons Green
- Accredited under CHAS and SafeContractor, with ISO 9001
- Fixed quotes from a survey or photos
- One number for every site across the South East and London
- Trading since 2009
AHU cleaning for kitchens and businesses in Dragons Green
Coils are where a lot of the dirt ends up. A coated coil restricts airflow and makes the unit work harder. We clean coils with methods suited to their condition, taking care not to damage the fins. The work covers internal panels, dampers and louvres and filter sections, and people most often call us about plant that needs cleaning after a refit and dirty coils holding back the airflow.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
Accreditations are easy to claim and worth checking. We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Place
- Dragons Green (RH13)
- Wider area
- West Sussex
- Paperwork
- Report and photos after the visit
- Price
- A fixed price before work begins
- Hours
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What we’re called out for in Dragons Green
An overdue filter loads up with dirt, which cuts the airflow and can let air slip round the filter. Then the rest of the unit takes the load.
Common reasons sites call us are:
- Intake sections clogged with outdoor debris
- Condensate trays that will not empty
- Filters that are clogged or overdue
- Stale or musty smells from the ventilation
If you manage a school such as Shipley CofE Primary School, ventilation cleaning is best booked for the holidays.
What your quote should include
- Whether the work can be done while the site is closed
- How VAT is shown on the quote
- Whether the price is fixed
- What paperwork you get at the end
What a clean won’t put right
It’s worth knowing the limits before booking:
- Faulty motors, drives or bearings
- Leaking heating or cooling coils
- Controls and BMS settings that run the unit
Not sure which it is? You can phone us on 0345 646 2711, or send details by email and we will tell you honestly.
Parts of the system we cover
- Drain trays
- Filter sections
- Supply and extract fans
- Internal panels
- Heating and cooling coils
- Dampers and louvres
Nearby places to Dragons Green
What else we do in Dragons Green
Dragons Green: your questions answered
Can the work in Dragons Green be done at night or at weekends?
Yes, out-of-hours work is a big part of what we do. The site is handed back ready to open. When you phone us on 0345 646 2711 or send us an email, mention when the site is quiet.
Do you cover smaller places like Dragons Green?
Yes, Dragons Green is part of our area, however small the site. A survey first, from photos or a visit, means we arrive with the right kit.
Can we book visits on a schedule?
Yes, of course. Tell us what you have and how it’s used, and we’ll suggest a schedule and quote for it.
Is there a report after cleaning?
Yes. Every clean comes with a TR19® certificate and a photo report. They’re worth keeping with the plant records.
How much notice do you need?
Earlier is better, especially for out-of-hours work. We usually quote within one working day, and there’s a 24/7 line for emergencies.
Do you have insurance?
Yes. We’re fully insured, and we can share the details when you need them.
Will the ventilation be off while you clean?
Yes. We cannot clean a running unit, so it’s switched off and made safe first. The shutdown is planned with whoever runs the building.
What about areas you cannot get to?
Anything we cannot reach goes on the report, with a note of where it is, and we tell you what would make it reachable, for example new access panels.
How it works
At the end of the visit, someone from your team can look over the work with us. We point out anything that couldn’t be reached or needs a follow-up, and it goes on the report too. The visit takes one overnight shift for many single units, with bigger plant phased. Somewhere like Dragons Green, lanes, gates and parking are worth mentioning in advance.
- 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.
- Coils and trays are cleaned and the condensate drain cleared.
- The unit is closed up and handed back, with a report to follow.
Preparing for the visit
- Clear loose items from the work area
- Plan for cooking equipment or plant to be off before we arrive
- Mention any locked doors, roof access or ceiling voids
Getting a quote
Photos are enough for some jobs, while others need a look on site. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, the quote is fixed before any work is booked.
Read more
What affects the quote in Dragons Green
We quote each job individually. This is what makes a difference:
- The size of the system
- The times the site is available
- How many systems or sites are involved
- Any permits to work or inductions
A single site or a whole portfolio, we price it on the same basis: the work involved, the access and the timing. You will have a fixed price before we start.
What we need to know
When you contact us, it’s useful to have:
- The site address and the type of premises
- How we’d reach plant on a roof or in a plant room
- The paperwork from the last visit, if you have it
- Close-ups of filters, grilles, hatches or access panels
Every quote begins with a look at the system, either from pictures and details you send or from a site visit. After that, you get a fixed price for the work, before any work starts.
Between visits
After the visit, a few habits help the work last:
- Store the TR19 paperwork where auditors can find it
- Book the next check in line with the report
- Change filters on schedule and log each change
- Report musty smells from the vents right away
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.
Make the drain tray part of every maintenance visit. A drain that is cleared early never gets to the slime stage.
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’re done, and check every one is shut.
Fans and fan sections
The fan section is cleaned with the unit switched off and isolated with your site team.
Ventilation in Dragons Green buildings
For Dragons Green, the closest hospital is Horsham Hospital, roughly 5.4 miles north-east. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. Dragons Green is about 37 miles from central London, well within the area we cover across London and the South East. A survey and a fixed quote come first, then the visit at a time that suits you.
If you run a surgery, dental practice or care home near Dragons Green, clean ventilation matters as much to you as to a hospital like Horsham Hospital (about 5.4 miles north-east).
Dragons Green is about 5 miles south-west of Horsham, in West Sussex. Whether your site is in the middle of Dragons Green or further out, we cover AHU cleaning for every kind of premises, from a single unit to a large public building. Dragons Green is one of 371 towns, villages and districts in West Sussex we cover for AHU cleaning. We also work in Brighton, around 16 miles away.
Work in RH13 follows the same survey, fixed quote and written report as everywhere else we cover. Whether your site is on Dragons Lane and Dragons Green Road or anywhere close by, we can help. If your site is just outside Dragons Green, we cover Shipley (1 mile south), Whitehall (1 mile south), Broomer's Corner (2 miles south-west), Dial Post (3 miles south) and West Grinstead (3 miles south-east). We also work in nearby towns such as Crawley (11 miles north-east), Horsham (5 miles north-east), Worthing (12 miles south), Haywards Heath (12 miles east), Burgess Hill (11 miles east) and Littlehampton (15 miles south-west).
Local landmarks in Dragons Green
Dragons Green’s nearest station is Billingshurst station, roughly 3.4 miles west. Other landmarks nearby include Horsham Hospital (5.4 miles north-east) and Christs Hospital School Museum (3.2 miles north). Not far away are Knepp Wildland.