West Sussex · Air handling unit cleaning
Air handling unit cleaning in Coldwaltham, West Sussex
AHU cleaning in Coldwaltham from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Odours coming through the supply air
- Dust-coated heating and cooling coils
- Leaves and litter drawn into the unit
Common problems we fix in Coldwaltham
Planned maintenance often covers belts, motors and filters but not cleaning. So a unit can be well maintained and still dirty.
Clients normally contact us when they notice something like this:
- Condensate trays that won’t empty
- Filters that are clogged or overdue
- Air handling units never cleaned inside
- Air handling units due a clean after building work
Arundel and District Hospital, about 5.9 miles south, is the nearest hospital to Coldwaltham, and healthcare sites of every size need their supply air kept clean.
Questions to ask before booking
- Proof of insurance
- Whether they recommend a next date
- How areas they can’t reach will be recorded
- Whether VAT is included
About our AHU cleaning in Coldwaltham
Drain trays under cooling coils are meant to empty. If the outlet blocks, standing water and slime build up, in the airstream that feeds the building. Clearing and cleaning the tray is central to every AHU clean. If you have dirty coils holding back the airflow and stale or musty smells from the ventilation, we can put it right.
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.
Nothing is signed off by word of mouth: a written report, dated and illustrated with pictures, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. Any parts we couldn’t reach are recorded on it too.
- Place
- Coldwaltham (RH20)
- Wider area
- West Sussex
- Paperwork
- Report and pictures after the visit
- Quote
- A fixed quote up front
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
Different parts, different methods
Drain trays
A tray that doesn’t drain becomes a pool of stagnant water in the airstream. We clean it and report anything about the tray or drain that needs fixing.
Rooftop and plant room units
Rooftop units take the weather, and intakes can collect leaves and debris. We clean the intake and first stage of filters along with the rest.
Looking after it afterwards
So the system stays in good health:
- Don’t store bins or materials near the intake
- Store the TR19 paperwork where auditors can find it
- Change filters on schedule and log each change
- Note any water around the unit or leaks below it
Restart the unit with your site team or maintenance contractor once we have finished. Keep an eye on the condensate drain over the next few days to make sure it stays clear.
Keep the unit’s doors and panels in working order. Sections that are awkward to open are the ones that get skipped.
What staff can safely do
Away from the kitchen, the in-house job is mainly checking: clear grilles, a log of filter changes and reporting anything odd. The inside of ducts and units needs a specialist.
Keep a record of what your team does. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, alongside our reports.
Nearby places to Coldwaltham
More services for Coldwaltham
The process
Your trading hours come first. We book the visit for a time the area is closed, whether that’s an evening, overnight or a weekend. Once we’re in, the area is sheeted and anything that has to be off is turned off and cooled, and the work takes anything from half a day for one small unit to several shifts for a plant room full of them. A quick note on how to find the site and where to park makes a visit to Coldwaltham run smoothly.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- 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.
How to prepare
- Move anything stored near the system
- Make sure equipment near the work can be switched off and left to cool
- Find the previous report, if there is one
Getting a quote
We don’t publish a price list, because every site is different. We look at your system first, from photos or on a visit, and then give you a fixed quote. To get going, call us on 0345 646 2711, or email photos.
Related advice
How we price AHU cleaning
There’s no set price list, because sites vary so much. What we look at:
- The number of sites or systems
- What state the system is in
- Site requirements such as sign-in and permits
- Parking and loading at the site
The price reflects the work, not guesswork. That’s why we survey first, from pictures or on site, and why the quote is fixed before we start.
What we need to know
You don’t need the technical terms. Just send:
- How we’d reach plant on a roof or in a plant room
- Your opening hours and when the area is out of use
- Close-ups of filters, grilles, hatches or access panels
- The site address and the type of premises
For a fixed quote, give us a ring on 0345 646 2711, or send details by email with the site type, your trading hours and a short description of the system. Photos and the last report, if you have one, make the quote quicker. We typically come back within one working day.
Questions from Coldwaltham
Is AHU cleaning available in Coldwaltham?
Yes, Coldwaltham is covered. You can ring 0345 646 2711 or use the quote form and tell us what needs doing.
Do you work at weekends in Coldwaltham?
Yes, we can come after you close and finish before you open. It means the site in Coldwaltham keeps running as normal. Just ring 0345 646 2711 or send us an email with your opening times and we’ll plan around them.
Do you give a certificate after the clean?
Yes. You receive a certificate and a report showing each section before and after, with any faults we noticed.
What happens to the waste?
We contain it and take it with us. Grease, debris and waste water are collected as the work goes on, so it does not spread.
How do you keep the site clean during the work?
Floors and surfaces near the work are sheeted before work begins, and waste is contained as we go. At the end, the area is cleaned down.
Do you offer emergency callouts?
Yes. Our emergency line runs 24/7 for anything that can’t wait until a planned visit. Call us any time and explain what’s happened.
What information do you need?
Just the basics: where it is, what kind of site, when it’s open and the access. Photos and the last report help too. Then call us on 0345 646 2711 or send us an email.
Can you quote from photos?
Usually, yes. Send a few wide photos plus close-ups of panels, filters or grilles, and we normally come back within one working day. Some sites still need a visit, and we’ll say so.
Multi-site and managed buildings
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.
Facilities teams in offices, schools and healthcare sites book us too in Coldwaltham and across West Sussex. Larger estates can be phased building by building to keep disruption down.
AHU cleaning around Coldwaltham
Coldwaltham is about 43 miles from central London, well within the area we cover across London and the South East. The visit is fixed around your opening hours, not ours. About 5.9 miles south of Coldwaltham is Arundel and District 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.
School buildings such as St James' CofE Primary School are typically done in the holidays, so classrooms are not disturbed.
Coldwaltham is about 9 miles north of Littlehampton, in West Sussex. Every kind of commercial site in Coldwaltham, AHU cleaning is something we can help with. We can work out of hours so the site keeps running. Coldwaltham is one of 371 places in West Sussex we cover for commercial clients. There’s also a page for Brighton, roughly 19 miles from Coldwaltham.
Here we cover the RH20 postcode area for AHU cleaning. We cover sites on London Road, Old London Road and Silverdale and the roads around them. Neighbouring places we cover for AHU cleaning include Watersfield (1 mile south-west), Hardham (1 mile north-east), Lower Horncroft (1 mile north-west), Coates (2 miles north-west) and Fittleworth (2 miles north-west). Within a short drive, we also cover Horsham (13 miles north-east), Worthing (10 miles south-east), Bognor Regis (12 miles south-west), Chichester (12 miles south-west), Littlehampton (9 miles south) and Shoreham-by-Sea (14 miles south-east).
Local landmarks in Coldwaltham
In Coldwaltham, that means kitchens and buildings near The Labouring Man pub and Lodge Hill Residential Centre, among other places. Coldwaltham’s nearest station is Pulborough station, about 1.8 miles north-east. A little further out are Amberley Museum (2.8 miles south) and Amberley Castle (2 miles south). For a walk, there’s Amberley Wildbrooks RSPB Reserve and Bignor Hill.