West Sussex · Air handling unit cleaning
Air handling unit cleaning in Colwood, West Sussex
We cover Colwood for cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces. Out-of-hours visits, a fixed quote and a written report with pictures as standard.
- Intake sections clogged with outdoor debris
- Blocked condensate drains and slimy trays
- Dust built up on fan impellers
Common questions in Colwood
Do you cover smaller places like Colwood?
Yes. Villages and rural sites across the South East are part of our work, Colwood included. Just mention lanes, gates or anything else about the site when you book.
Do you work at weekends in Colwood?
Yes, evening, overnight and weekend work is normal for us. It means the site in Colwood keeps running as normal. Just give us a ring on 0345 646 2711, or send details by email with your opening times and we’ll plan around them.
Is a quote from photos possible?
Often, yes. Photos of the system and the access, plus your opening hours and last report, are often enough. Where we cannot see enough, we arrange a survey.
Which kinds of sites do you work on?
All kinds of commercial and public premises: kitchens, offices, schools, healthcare, retail, leisure and food production. Work is timed around how each site runs.
Do you have a 24/7 line?
Yes, 24/7. Our office is open from 8am to 6pm on weekdays, and the emergency line covers the rest.
How long does it take to clean an air handling unit?
As a guide, it takes half a day to a full day per unit, with large plant planned over several shifts. We plan the shutdown around that, including evenings or weekends.
What information do you need?
A short description and a few photos, with the address and opening hours. We will ask for anything else we need.
What happens if you cannot reach some of it?
They’re listed in the report, never skipped quietly. The report says which parts couldn’t be reached and why, and we can quote to improve the access.
AHU cleaning for kitchens and businesses in Colwood
We clean the parts of the unit where dirt and moisture gather: the filter section, heating and cooling coils, drain trays, fan and casing. You get a TR19® certificate and a photo report showing the unit before and after. Common call-outs are for units needing a clean before a new tenant or handover and drain trays holding standing water, across internal panels, filter sections and drain trays.
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.
For insurers and inspectors, the record counts. That is why every job is written up in a report with photos, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Where
- Colwood (RH17)
- Region
- West Sussex
- Records
- Photo report after each visit
- Quote
- A fixed quote up front
- Working hours
- Out of hours as standard, 24/7 emergency line
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Aftercare tips
How long the results last depends on use and care. Here’s what we suggest:
- Watch for drips or damp patches near the plant
- Make sure condensate is draining away
- Diary the inspection date recommended in the report
- Keep filter changes on time and recorded
If the ductwork hasn’t been cleaned, consider it next. Cleaning the unit and ducts together gives the best result, and we can quote for both.
Change or clean filters on time. Once filters clog, dirt starts getting past them.
What affects the quote in Colwood
There’s no set price list, because no two systems are the same. What we look at:
- The times the site is available
- 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 is why we survey first, from pictures or on site, and why the quote is fixed before work begins.
What we need to know
You do not need the technical terms. Just send:
- Your last certificate, test record or report
- How we’d reach plant on a roof or in a plant room
- When the site is open and when it’s quiet
- Where the site is and what kind of site it is
To get a fixed quote, call 0345 646 2711 or email us and tell us the type of site, your opening hours and roughly what the system looks like. Photos and the last report, if you have one, make the quote quicker. We usually come back within one working day.
How the job changes from site to site
Drain trays
The drain tray collects water from the cooling coil. Standing water and slime are removed and the outlet is checked.
Filters
Filter condition tells you a lot about the rest of the unit. They’re photographed before and after for your records.
Ventilation in Colwood buildings
The Dene Hospital is the nearest hospital, about 3.8 miles south-east of Colwood. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale. Colwood is about 35 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.
Healthcare ventilation, from large hospitals like The Dene Hospital (about 3.8 miles south-east) to small clinics, depends on clean filters, coils and ducts. Around Colwood, as anywhere, ventilation cleaning begins with an inspection.
Colwood is about 5 miles north-west of Burgess Hill, in West Sussex. Sites in Colwood get the same service as everywhere we cover: a survey first, a fixed quote, work timed around your hours and a report with pictures. Across West Sussex, we cover 371 places, and Colwood is one of them. We also work in Brighton, around 13 miles away.
All of RH17 is covered for AHU cleaning, from busy streets to back roads. AHU cleaning is available to premises on Earwig Lane and Cross Colwood Lane and the roads around them. Other places close to Colwood include Crabtree (1 mile north-west), Lower Beeding (2 miles north-west), Slaugham (3 miles north), Plummers Plain (3 miles north) and Monk's Gate (3 miles north-west). We also work in nearby towns such as Crawley (8 miles north), Horsham (6 miles north-west), Worthing (15 miles south-west), Haywards Heath (6 miles east), Burgess Hill (5 miles south-east) and East Grinstead (13 miles north-east).
Local landmarks in Colwood
Typical jobs here are in premises near Leonardslee, among other places. Nearby you’ll also find The Dene Hospital (3.8 miles south-east) and Cuckfield Museum (3.7 miles east). Not far away are Blunts Wood and Paiges Meadow.
When it’s something else
Before you book, it helps to know what’s not included:
- Breakdowns that need a mechanical engineer
- A system that’s undersized for the building
- Controls and BMS settings that run the unit
If you are not sure, just call us on 0345 646 2711, or email photos and we’ll give you a straight answer.
What the work covers
- Drain trays
- Dampers and louvres
- Internal panels
- Supply and extract fans
- Heating and cooling coils
- Filter sections
How it works
We work around your opening hours, not the other way round. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. Once we’re in, the area is sheeted and anything that has to be off is turned off and cooled, and the work takes a single shift for a typical unit, longer for large or heavily soiled ones. Pictures of the system and its access let us plan the work in Colwood before we set off.
- 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.
- We clean the coils and clear the tray and drain.
- We close every panel, hand the unit back and send the report and certificate.
Getting ready for the visit
- Dig out any earlier paperwork for the system
- Mention any parking or loading restrictions
- Arrange a key holder or contact on site
Get a fixed quote
The quickest way to a quote is to send pictures: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Add the site type and your opening hours, and we can price many jobs without a visit.
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Multi-site and managed buildings
If you look after several sites, we can plan visits across the whole estate and price them together. Each site gets its own report and photos, so records stay tidy.
Keeping records across a portfolio is half the battle. Every visit ends with a dated report and pictures, ready to show insurers, fire officers or EHOs.
In-house cleaning or a specialist?
Good housekeeping makes our visits easier, not unnecessary. Clean filters and tidy surfaces slow the build-up, but the parts you can’t see still need a specialist at the right interval.
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We’ll take a look and send you a fixed quote.