Kent · Air handling unit cleaning
Air handling unit cleaning in Wilmington, Kent
AHU cleaning in Wilmington from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Air handling units never cleaned inside
- Units needing a clean before a new tenant or handover
- Stale or musty smells from the ventilation
AHU cleaning in Wilmington
Heating and cooling coils trap dust that gets past the filters. Dirt on the fins holds back air and makes the unit work harder to do the same job. Coils are cleaned carefully, with methods chosen so the fins are not flattened. The work covers dampers and louvres, drain trays and supply and extract fans, and the jobs we see most are dirty fans and fan housings and air handling units due a clean after building work.
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.
It’s worth checking any contractor’s accreditations. 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.
- Location
- Wilmington (DA2, DA5, DA1)
- Region
- Kent
- Records
- Written report with pictures
- Price
- A fixed price before we start
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
Managing agents and facilities teams in Wilmington
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 each one has its own record.
We also work for facilities teams across offices, schools and healthcare in Wilmington and across Kent. Work can be phased by floor, building or site around the people who use them.
Wilmington: your questions answered
Can a school’s ventilation in Wilmington be done out of term time?
Yes, and it’s the easiest time to do it. Food Standards Agency records list about 18 schools, colleges and universities with registered kitchens within about a mile and a half of Wilmington. Send us your term dates when you ring 0345 646 2711, or email photos, and we’ll fit the work in.
Can you work in Wilmington outside opening hours?
Yes, out-of-hours work is a big part of what we do. The site is handed back ready to open. Just call us on 0345 646 2711 or email us with your opening times and we will plan around them.
What should I send you?
Just the basics: the address, the site type, your opening hours and how we reach the system. Photos and any previous paperwork make it quicker. After that, simply give us a ring on 0345 646 2711, or email photos.
Can you quote from pictures?
Yes, for many jobs. 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 will say so.
What is TR19?
It’s BESA’s specification and the benchmark insurers, fire officers and EHOs look to. It sets out inspection, cleaning and record keeping, and it takes a risk-based approach.
Can you come out in an emergency?
Yes. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line, and we’ll advise on what to do next.
What do you clean inside the unit?
We clean the filter section, heating and cooling coils, drain trays, fan and internal casing. Filters are cleaned or changed as agreed in the quote.
How much notice should we give?
It depends on the time you need and how big the job is. Tell us your preferred dates when you ask for a quote, and if it’s an emergency, call us any time.
The process
There’s very little for your team to do on the day. Someone lets us in at the agreed time and shows us where everything is, and we take it from there. Before we leave, the area is tidied and the paperwork follows. Photos of the system and how to reach it help us plan a visit to Wilmington.
- First the unit is surveyed, from pictures or a visit, and the scope agreed.
- The unit is shut down with your site team and the area protected.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- We clean out the drain tray and make sure it drains.
- You get a TR19® certificate and a photo report.
Getting ready for the visit
- Tell us the best time to work, such as after service or at a weekend
- Name a contact who can let us in at the agreed time
- Clear loose items from the work area
Get a fixed quote
Quotes are quick. Call or email with a few details and you’ll normally have a fixed price within one working day. Where a survey is needed, we arrange a time that suits the site.
Read more
Honest limits
It’s worth knowing the limits before booking:
- Dirty ducts beyond the unit itself
- Mechanical faults with motors, belts or bearings
- Airflow problems caused by the system’s design
Not sure which it is? You can call us on 0345 646 2711 or send us an email and we will tell you honestly before you book.
Where we work
- Internal panels
- Heating and cooling coils
- Filter sections
- Dampers and louvres
- Supply and extract fans
- Drain trays
Fixed quotes for AHU cleaning in Wilmington
The diagnosis comes before the price. The main factors are:
- How many systems or sites are involved
- One-off work versus a regular cycle
- The times the site is available
- The scale of the work
What you pay reflects the actual work. That’s why every job is surveyed first, and why the quote is fixed before any work starts.
Asking for a quote
Many jobs can be priced from photos and some basics. Send what you can of the following:
- A few general shots of the system
- The paperwork from the last visit, if you have it
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- The postcode and the type of business
Here’s what helps us quote: where the site is, what it is and its opening hours, photos of the system and the last certificate or report, if there is one. Then give us a ring on 0345 646 2711, or send details by email.
What we’re called out for in Wilmington
Cooling coils create condensation, and that water has to go somewhere. A blocked outlet or a badly sloped tray leaves standing water, and slime and smells soon follow.
Any of these means the system needs a check-up:
- Dirty filters cutting the airflow
- Units that have only ever had filter changes
- Units needing a clean before a new tenant or handover
- Drain trays holding standing water
Wherever a school like Wilmington Grammar School for Girls has ducted ventilation, a half-term visit keeps the work out of lesson time.
Before booking anyone
- How VAT is shown on the quote
- If the quote is a fixed price or an estimate
- What’s included in the scope, part by part
- Proof of insurance
Places near Wilmington
More services for Wilmington
What your team can do, and what needs us
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.
Staff cleaning and specialist work are not the same thing. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but grease that has passed the filters is out of reach. Reaching it takes a specialist with the right equipment.
AHU cleaning around Wilmington
There are about 18 schools, colleges and universities, about 25 hospitals, care homes and childcare premises and about 3 hotels, B&Bs and guest houses on the FSA’s food hygiene register within about 1.5 miles of central Wilmington. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. The nearest hospital to Wilmington is West Hill Hospital, about 1.4 miles north-east. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. Wilmington, about 13 miles from central London, is within our usual area. A survey and a fixed quote come first, then the visit at a time that suits you.
Healthcare buildings such as West Hill Hospital, about 1.4 miles north-east, depend on their ventilation; if you manage a surgery, clinic or care home near Wilmington, yours matters too.
Wilmington is about 2 miles south-west of Dartford, in Kent. Wilmington gets the same approach as every site we work on: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with photos. Across Kent, we cover 922 places, Wilmington among them. There’s also a page for London, about 13 miles away.
Postcode districts we cover here for AHU cleaning: DA2, DA5 and DA1. If you need AHU cleaning at premises on Common Lane, Parsons Lane and Oakfield Lane or anywhere close by, our technicians can take on the work. Being close to the A2, Wilmington is simple for us to get to for AHU cleaning. Nearby, we also carry out AHU cleaning in Bowmans (1 mile north), Joyden's Wood (1 mile west), Puddledock (1 mile south-west), Coldblow (1 mile north-west) and Crayford (1 mile north). We also work in nearby towns such as Sevenoaks (10 miles south), Gravesend (8 miles east), Northfleet (7 miles east), Kings Hill (14 miles south-east), Swanscombe (5 miles east) and Windmill Hill (8 miles east).
Near you in Wilmington
Around Wilmington, our work takes us to kitchens and buildings near Dartford Heath, The Plough pub and Wilmington Primary School. Wilmington’s nearest station is Crayford station, roughly 1.3 miles north of the centre. Other landmarks nearby include Stone Castle (4 miles east) and West Hill Hospital (1.4 miles north-east). The countryside around Wilmington includes Wansunt Pit.
Aftercare tips
Think of this as the after-treatment advice, short and simple:
- File each AHU report in the maintenance log
- Flag stale or damp smells in the supply air
- Clear leaves and litter away from the intake
- 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.
Make the drain tray part of every maintenance visit. A drain that’s cleared early never gets to the slime stage.