West Sussex · Air handling unit cleaning
Air handling unit cleaning in Gay Street, West Sussex
Professional AHU cleaning in and around Gay Street, booked around your opening hours and finished with a written report and photos.
- Dirty fans and fan housings
- Coils clogged with dust and debris
- Condensate trays that will not empty
Managing agents and facilities teams in Gay Street
Multi-site operators often want one contractor and one number. We cover South East England and London, so a run of sites can go into one programme and kept to a regular schedule.
We regularly work with managing agents. Send the address, what’s needed and how access works and we’ll come back with a fixed quote.
AHU cleaning in Gay Street, done properly
We clean air handling units for buildings in Gay Street and across West Sussex, working to TR19® Air, in offices, schools, hospitals, care homes and retail. Units are cleaned when the site can spare them, often evenings, overnight or weekends. The work covers drain trays, supply and extract fans and internal panels, and the jobs we see most are air handling units never cleaned inside and leaves and litter drawn into the unit.
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 report is your system’s health record: dated, with pictures, and showing what was done. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal and sits alongside the report.
- Where
- Gay Street (RH20)
- Wider area
- West Sussex
- Records
- Photo report after each visit
- Price
- Fixed quote, usually within a working day
- Hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Reviewed
- 30 October 2026
Places near Gay Street
What else we do in Gay Street
When to call us in Gay Street
An overdue filter loads up with dirt, cutting airflow and sometimes letting dirty air bypass them altogether. After that, the coils and fan collect what the filter should have caught.
Any of these means the system needs a check-up:
- Dirty coils holding back the airflow
- Blocked condensate drains and slimy trays
- Air handling units with blocked filters
- Rooms that smell stuffy when the system runs
In Gay Street, supply and extract ducts are cleaned along with the units that serve them.
What your quote should include
- How VAT is shown on the quote
- Whether the quote is based on a survey or pictures
- Whether the price is fixed
- When the next visit should be, and why
What AHU cleaning can’t fix
Some problems need a different service or another trade:
- The supply and extract ducts, quoted separately
- Mechanical faults with motors, belts or bearings
- Building management system faults
If you’re not sure, just give us a ring on 0345 646 2711 or use the quote form and we’ll give you a straight answer.
Parts of the system we cover
- Filter sections
- Internal panels
- Supply and extract fans
- Dampers and louvres
- Heating and cooling coils
- Drain trays
Why act early in Gay Street
A clogged coil or dirty fan makes the unit work harder for the same airflow. The result is extra wear and a building that does not feel as comfortable, and a planned clean is far less disruptive than a breakdown. Systems in rural buildings are often out of sight and out of mind.
A single site or a whole portfolio, we price it on the same basis: what needs doing, how we get to it and when. The price is fixed before we start.
Why choose Duct Doctor in Gay Street
- We’re fully insured
- In business since 2009
- One number for every site across the South East and London
- Fixed quotes, usually within one working day
Read what affects the cost and our accreditations.
Ventilation in Gay Street buildings
About 40 miles out from central London, Gay Street is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site.
In Gay Street, we look inside the system before deciding what needs cleaning.
Gay Street is about 9 miles south-west of Horsham, in West Sussex. Across the RH20 area, we can take on AHU cleaning. Gay Street is one of 371 places in West Sussex we cover for commercial clients. Brighton is in our area too, around 17 miles away.
Every address in RH20 is covered for AHU cleaning, from the main roads to the quietest streets. Close by, we work in North Heath (1 mile north-west), Nutbourne (1 mile south), Broomershill (1 mile south-west), West Chiltington (2 miles south) and Codmore Hill (2 miles west). Further out, we also cover Crawley (15 miles north-east), Horsham (9 miles north-east), Worthing (11 miles south), Burgess Hill (15 miles east), Littlehampton (12 miles south) and Shoreham-by-Sea (13 miles south-east).
Local landmarks in Gay Street
The nearest railway station is Pulborough station, about 2.7 miles south-west. For a walk, there’s The Mens.
The process
Protection comes first: floors, worktops and anything near the work are covered. Then we make the system safe and start. The work on site takes half a day to a full day per unit, with large plant planned over several shifts, and the area is cleaned down before we leave. Somewhere like Gay Street, lanes, gates and parking are worth mentioning in advance.
- We look at the unit and the plant area during the survey.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- We clean the coils and clear the tray and drain.
- We close every panel, hand the unit back and send the report and certificate.
How to prepare
- Let us know when the site is closed or quiet
- Plan for cooking equipment or plant to be off before we arrive
- Let us know about permits to work or site inductions
How to get a quote
If you need AHU cleaning in Gay Street, give us a ring on 0345 646 2711 or use the quote form. Tell us what kind of premises it is and when it’s open, plus pictures or the previous report if they’re to hand. A fixed quote usually follows within one working day.
Read more
What the work involves, part by part
Internal casing and panels
Dust settles on every internal surface of the unit. We clean each section from intake to discharge.
Filters
Filter condition tells you a lot about the rest of the unit. They’re photographed before and after for your records.
Aftercare tips
Here’s the after-treatment advice, short and simple:
- Make sure the unit’s access doors open easily
- Change filters on schedule and log each change
- File each AHU report in the maintenance log
- Report water on the plant room floor
Stick to the filter change schedule, because good filters protect everything downstream. Log every change so it’s easy to see when the next is due.
Check drain trays and condensate drains during routine maintenance. Catching a slow drain early stops standing water building up.
FAQs for Gay Street
Do you work in villages like Gay Street?
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 work at weekends in Gay Street?
Yes, evening, overnight and weekend work is normal for us. The site is handed back ready to open. Tell us your opening hours when you ask for a quote.
Do you work with multi-site operators?
Yes. You deal with one contact for every site in our area, with visits on a regular schedule.
Can you quote from pictures?
In many cases, yes. With good pictures, the site type and your last report, we can price many jobs. Larger or hidden systems need a survey on site first.
Do you have insurance?
Yes, fully. CHAS and SafeContractor accreditation sit alongside it for clients who vet their contractors.
What about areas you cannot get to?
The report shows them clearly. Often the fix is extra access, such as new panels in ductwork, and we can fit those.
Do you have a 24/7 line?
Yes. There’s a 24/7 emergency line for anything that can’t wait until a planned visit. Call us any time and explain what’s happened.
Do you do ventilation duct cleaning too?
Yes, supply and extract ducts, grilles and diffusers. We’ll tell you after the survey whether the ducts need it.