Kent · Air handling unit cleaning
Air handling unit cleaning in Ash, Kent
AHU cleaning in Ash from ventilation hygiene specialists trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Filters that are clogged or overdue
- Intake sections clogged with outdoor debris
- Blocked condensate drains and slimy trays
AHU cleaning in Ash, done properly
An AHU clean is a thorough examination and treatment of the unit. We look inside each section, clean what we find and record it with pictures, so you can see the unit’s condition for yourself. Common call-outs are for units that have only ever had filter changes and coils clogged with dust and debris, on heating and cooling coils, internal panels and dampers and louvres.
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.
Every visit ends with a written report and photos, so you have a record of what was done and when. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Where
- Ash (TN15, DA3)
- Region
- Kent
- Records
- Written report with photos
- Quote
- A fixed quote up front
- Hours
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
Ash buildings and their air
Going by the FSA’s register, there are about 4 schools, colleges and universities serving food in Ash and the streets around it, up to about 1.5 miles out. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. For Ash, the closest hospital is Darent Valley Hospital, roughly 5.6 miles north. Clean air matters most where people are unwell, and that is as true in a care home as in a hospital. Ash is about 19 miles from central London, well within the area we cover across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site.
For schools like New Ash Green Primary School, the holidays are the usual time to inspect and clean ventilation.
Ash is about 6 miles south-west of Northfleet, in Kent. For AHU cleaning in and around Ash, please phone us on 0345 646 2711 or drop us a line for a fixed quote. We work across South East England and London, including Ash. Ash is one of 922 places in Kent where we work for AHU cleaning. We also work in Maidstone, around 12 miles away.
Here we cover the TN15 and DA3 postcode area for AHU cleaning. Whether your site is on Ash Road, The Street and Billet Hill or anywhere close by, our technicians can take on the work. Nearby, we also carry out AHU cleaning in West Yoke (1 mile north), Fawkham Green (1 mile north-west), Speed Gate (1 mile north-west), Stansted (2 miles south) and West Kingsdown (2 miles south-west). Further out, we also cover Maidstone (12 miles south-east), Dartford (7 miles north-west), Sevenoaks (7 miles south-west), Royal Tunbridge Wells (15 miles south), Gravesend (6 miles north-east) and Tonbridge (11 miles south).
What’s near Ash
Around Ash, our work takes us to kitchens and buildings near The White Swan Public House, among other places. The closest station to Ash is Longfield station, roughly 2.8 miles north. Nearby you’ll also find Darent Valley Hospital (5.6 miles north) and Eynsford Castle (3.6 miles west).
When it’s something else
In fairness, there are a few things this work won’t fix:
- Controls and BMS settings that run the unit
- Dirty ducts beyond the unit itself
- A system that is undersized for the building
Not sure which it is? You can ring 0345 646 2711, or email photos and we will tell you honestly before you book.
What the work covers
- Drain trays
- Dampers and louvres
- Supply and extract fans
- Internal panels
- Filter sections
- Heating and cooling coils
How we price AHU cleaning
Your quote is based on your site. We take into account:
- Access, including roofs, risers and ceiling voids
- Whether it’s a one-off visit or part of a schedule
- How many systems or sites are involved
- Parking and loading at the site
Several systems or sites on one quote often makes better use of the time. Tell us about everything you’d like looked at and we’ll price it together.
Helping us quote
We can often survey from pictures. Try to include:
- A few general shots of the system
- Your last certificate, test record or report
- How we’d reach plant on a roof or in a plant room
- Close-ups of filters, grilles, hatches or access panels
Quoting starts with a diagnosis, either from photos and details you send or from a site visit. Then we send a fixed price so you know the cost before work begins.
Questions from Ash
Can a school’s ventilation in Ash be done out of term time?
Yes, and it’s the easiest time to do it. Food Standards Agency records list about 4 schools, colleges and universities with registered kitchens within about a mile and a half of Ash. Booking early in the term gives the best choice of holiday dates.
Can you get to a site in Ash?
Yes. Villages and rural sites across the South East are part of our work, Ash included. Photos of the system and directions to the site help us plan the visit.
What does TR19 mean?
BESA’s ventilation hygiene specification in two main parts: TR19® Grease for kitchen extract systems and TR19® Air for general ventilation. It is not legislation, but it’s the standard people check against.
How do you keep the site clean during the work?
Protection goes down first: sheeting over floors, worktops and anything close to the work. We tidy up and take our waste away before we leave.
Can we book visits on a schedule?
Yes. We run scheduled maintenance contracts, with visits at the interval your system needs. The report from each visit recommends the next date.
What’s included in an AHU clean?
Every section that collects dirt: filters, coils, tray, fan and panels. We confirm the scope after looking at the unit.
Can you clean without disrupting the building?
Yes. We work evenings, overnight and weekends, so the building keeps running in the day.
How long does an AHU clean take?
As a guide, it takes a single shift for a typical unit, longer for large or heavily soiled ones. The shutdown is planned to fit, out of hours if needed.
How the visit works
At the end of the visit, someone from your team can look over the work with us. Anything we couldn’t reach or that needs attention is pointed out there and then, and the same goes into the written report. The visit takes anything from half a day for one small unit to several shifts for a plant room full of them. If you can send photos, we can arrive in Ash knowing what to expect.
- We agree a shutdown window that suits the building.
- We take before pictures of each section of the unit.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- After photos are taken and the certificate issued.
Preparing for the visit
- Tell us the best time to work, such as after service or at a weekend
- Let us know about permits to work or site inductions
- Let us know how we reach the system, including roofs, risers and plant rooms
Getting a quote
We do not publish a price list, because no two systems are the same. Instead, we look at your site first, from photos or a survey, then send a fixed quote. To start, call 0345 646 2711 or email us.
Read more
Signs you need AHU cleaning in Ash
Filters catch most of the dust, but not all of it. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
If you notice any of these, it’s worth a diagnosis:
- Air handling units never cleaned inside
- Leaves and litter drawn into the unit
- Dirty fans and fan housings
- Stale or musty smells from the ventilation
Healthcare buildings such as Darent Valley Hospital, about 5.6 miles north, depend on their ventilation; if you manage a surgery, clinic or care home near Ash, yours matters too.
What to look for in a quote
- Whether a written report and pictures are included
- Whether the figure could change on the day
- Whether they’re fully insured
- Exactly which parts of the system are covered
Keeping the system healthy
Results last longer with the right care. Here’s what we suggest:
- Do not store bins or materials near the intake
- Change filters on schedule and log each change
- Diary the inspection date recommended in the report
- Make sure the unit’s access doors open easily
The report shows each section of the unit before and after, and note any part we couldn’t get to. It also notes faults we spotted, such as damaged panels or a blocked drain.
Regular filter changes are the best protection an AHU has. Overloaded filters let more dirt through to the coils and fan.
Part by part
Fans and fan sections
Every bit of air passes the fan, so a dirty fan sends dirt downstream. We clean the impeller, housing and surrounding section.
Internal casing and panels
The inside walls and floor of the casing collect dust and debris. Each section is cleaned from the intake through to the outlet.
In-house cleaning or a specialist?
Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. Inside the ducts, risers and fan is specialist work, which is where we come in.
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.