West Sussex · Air handling unit cleaning
Air handling unit cleaning in High Cross, West Sussex
AHU cleaning in High Cross from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Debris and leaves in the fresh air intake
- Plant that needs cleaning after a refit
- Fan sections that haven’t been cleaned in years
About our AHU cleaning in High Cross
Coils are where a lot of the dirt ends up. A coated coil restricts airflow and makes the unit work harder. Coils are cleaned carefully, with methods chosen so the fins aren’t flattened. If you have dirty coils holding back the airflow and debris and leaves in the fresh air intake, we can help, from drain trays, internal panels and dampers and louvres onwards.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
Insurers, fire officers and environmental health officers all look at records. That is why every job is written up in a report with pictures, and grease extract cleans come with a TR19® certificate issued through the BESCA Vent Hygiene Elite portal.
- Place
- High Cross (BN6)
- Region
- West Sussex
- Records
- Report and photos after the visit
- Price
- Fixed quote, normally within a working day
- Working hours
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
High Cross questions
Will you come out to High Cross?
Yes, High Cross is part of our area, however small the site. Photos of the system and directions to the site help us plan the visit.
Do you offer AHU cleaning in High Cross?
Yes, High Cross is covered. Get in touch with the details and we’ll arrange a survey.
Do you clean the ductwork as well?
Yes. Ductwork is cleaned through access panels, and any sections we cannot reach are noted in the report, and new panels can be fitted.
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 does AHU cleaning cost?
Every site is different, so each gets its own fixed quote. To get one, give us a ring on 0345 646 2711, or email photos and tell us about the site and its opening hours.
Are you fully insured?
Yes. Duct Doctor is fully insured, and we can share the details when you need them.
Can you come out in an emergency?
Yes. There’s a 24/7 emergency line, for problems that can’t wait. Call us any time and explain what’s happened.
Can we book visits on a schedule?
Yes. Tell us what you have and how it’s used and we’ll propose a schedule with a fixed quote.
When it’s something else
A few issues sit outside what this work can do:
- Problems with the unit’s controls or sensors
- Leaking heating or cooling coils
- Ventilation that was badly designed in the first place
If in doubt, call 0345 646 2711 or email us and we will say what we think before you book.
Parts of the system we cover
- Internal panels
- Supply and extract fans
- Heating and cooling coils
- Drain trays
- Dampers and louvres
- Filter sections
For landlords and multi-site operators
Where a tenant occupies the premises but the landlord owns the building, it’s worth checking the lease for who maintains the systems. We can quote either party, and the report can go to both.
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, which may be the employer, owner, landlord, FM or managing agent. With shared responsibility, good records help everyone.
How the job changes from site to site
Drain trays
Older trays can corrode and start leaking. We record their condition with photos so repairs can be planned.
Filters
Filter condition tells you a lot about the rest of the unit. We photograph them for the report.
Towns and villages near High Cross
Other services in High Cross
What AHU cleaning looks like in High Cross
We cover High Cross, about 39 miles from central London, as part of our work across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site. For High Cross, the closest hospital is The Dene Hospital, roughly 2.9 miles north-east. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
Classrooms and halls at schools such as Albourne CofE Primary School are easiest to work in when pupils are away.
High Cross is about 4 miles west of Burgess Hill, in West Sussex. If you need AHU cleaning in High Cross, it’s easy to get a fixed quote: please call us on 0345 646 2711, or email photos. We work across South East England and London, including High Cross. High Cross is one of 371 places in West Sussex we cover for AHU cleaning. We also work in Brighton, around 9 miles away.
Every address in BN6 is within our area for AHU cleaning, from busy streets to back roads. Close by, we work in Albourne (1 mile south-east), Albourne Green (1 mile south-east), Albourne Street (1 mile south-east), Blackstone (1 mile south-west) and Twineham (2 miles north). Larger places within reach include Crawley (12 miles north), Horsham (10 miles north-west), Worthing (11 miles south-west), Haywards Heath (7 miles north-east), Burgess Hill (4 miles east) and Shoreham-by-Sea (8 miles south).
Local landmarks in High Cross
For rail, the closest station is Hassocks station, roughly 3.4 miles east. Other landmarks nearby include The Dene Hospital (2.9 miles north-east) and Clayton Castle (3.9 miles south-east). Not far away are Wolstonbury Hill and Woods Mill.
Between visits
Good habits slow the build-up between visits. Our tips:
- Note any water around the unit or leaks below it
- File each AHU report in the maintenance log
- Keep inspection doors on the unit in good order
- Plan the next inspection before the last report gets filed away
When we’ve closed the unit up, it can be restarted with your site team. Keep an eye on the condensate drain over the next few days to make sure it stays clear.
Change or clean filters on time. Overloaded filters let more dirt through to the coils and fan.
What affects the cost of AHU cleaning
The quote reflects the site in front of us. We consider:
- Travel, parking and unloading
- Any permits to work or inductions
- Whether several sites go on one quote
- What state the system is in
The price reflects the work, not guesswork. That’s why we survey first, from photos or on site, and why the quote is fixed before work begins.
What to send for a quote
There’s no need for technical detail. It helps if you can send:
- Any access panels or hatches you can see
- The paperwork from the last visit, if you have it
- Photos showing the whole system and its surroundings
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
Need a price for AHU cleaning? Please call 0345 646 2711 or send us an email with a few details about the site. We will talk you through the work and send you a fixed quote before anything is booked.
When to call us in High Cross
Whatever surrounds a building in High Cross, the air drawn into its AHU carries dust, pollen and debris. Most of it lands at the intake and the first stage of filters, and some travels further into the unit.
Most sites get in touch when they notice one of these:
- Air handling units due a clean after building work
- Odours coming through the supply air
- Air handling units never cleaned inside
- Intake sections clogged with outdoor debris
The Dene Hospital, about 2.9 miles north-east, is the nearest hospital to High Cross, and healthcare sites of every size need their supply air kept clean.
Comparing quotes
- How areas they cannot reach will be recorded
- How VAT is shown on the quote
- Whether the quote is based on a survey or pictures
- What insurance they carry
How the visit works
We turn up at the time agreed with you, which is often after service, overnight or at a weekend. Anything that needs to be off for the work is switched off and left 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. A quick note on how to find the site and where to park makes a visit to High Cross run smoothly.
- We look at the unit and the plant area during the survey.
- The area is protected and the unit made safe.
- Each section is cleaned of dust, debris and slime.
- We clean the coils and clear the tray and drain.
- The unit is closed up and handed back, with a report to follow.
Getting ready for the visit
- Allow time for equipment near the work to be turned off and cool down
- Clear the space around the work
- Name a contact who can let us in at the agreed time
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, you get a fixed price before any work starts.