Kent · Air handling unit cleaning
AHU Cleaning in Stonebridge Green
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for commercial sites in Stonebridge Green and across Kent. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Plant that has been serviced but not cleaned
- Stale or musty smells from the ventilation
- Coils clogged with dust and debris
Stonebridge Green questions
Can you come to Stonebridge Green after we close?
Yes, out-of-hours work is a big part of what we do. It means the site in Stonebridge Green keeps running as normal. Your opening times are the first thing we ask for.
Do you clean school ventilation in Stonebridge Green in the holidays?
Yes, out-of-term visits are normal for schools. The FSA’s register shows about 3 schools and colleges with food registrations within roughly a mile and a half of Stonebridge Green. Just call 0345 646 2711 or send us an email with your term dates and we will plan around them.
How much notice do you need?
Earlier is better, particularly for night and weekend visits. We usually quote within one working day, and emergencies are covered by our 24/7 line.
Do you have a 24/7 line?
Yes. Our emergency line runs 24/7, for problems that cannot wait. Call us any time and explain what’s happened.
What about areas you can’t get to?
The report shows them clearly. In ductwork, new access panels are often the answer, and we can fit those.
How often should an air handling unit be cleaned?
Under TR19® Air, cleaning is led by inspection and risk rather than a set calendar. Each report suggests when the unit should next be looked at.
What accreditations do you have?
Our accreditations are CHAS, SafeContractor and ISO 9001, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
Can you fix a faulty AHU?
AHU cleaning is what we offer here, not mechanical repairs. Any faults we notice are recorded for your maintenance team to follow up.
AHU cleaning in Stonebridge Green
The fan pushes every bit of air in the system, so dust on its blades and housing ends up in the airstream. Fan, housing and the surrounding panels are cleaned as part of the job, with the unit switched off and made safe first. We’re often asked to deal with dirty filters cutting the airflow and intake sections clogged with outdoor debris, across dampers and louvres, internal panels and supply and extract fans.
Somewhere as small as Stonebridge Green, ducted ventilation is typically limited to a school, a care home, a surgery or a converted business building, wherever there is one, but where it’s fitted, it needs the same inspection and cleaning as anywhere.
A written report with pictures follows each visit, so you have a record of what was done and when. Where the work is a TR19® Grease clean, the certificate is issued through the BESCA Vent Hygiene Elite portal.
- Where
- Stonebridge Green (TN27)
- Wider area
- Kent
- Records
- Report and pictures after the visit
- Quotes
- A fixed price before work begins
- When we work
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
Nearby places to Stonebridge Green
What else we do in Stonebridge Green
Stonebridge Green buildings and their air
There are about 3 schools, colleges and universities on the FSA’s food hygiene register within 1.5 miles or so of the middle of Stonebridge Green. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. At about 41 miles from central London, Stonebridge Green sits well inside the area we cover. Evening, overnight and weekend visits are all possible.
Around Stonebridge Green, as anywhere, ventilation cleaning begins with an inspection.
Stonebridge Green is about 7 miles north-west of Ashford, in Kent. From the centre of Stonebridge Green to the outskirts, AHU cleaning is available to all kinds of commercial premises, from a single unit to a large public building. Our area takes in 922 places across Kent, large and small. There’s also a page for Maidstone, about 10 miles away.
AHU cleaning in TN27 is surveyed, quoted and booked the same way as anywhere else. Whether your site is on Field Mill Road and Stonebridge Green Road or anywhere close by, we can help. If your site is just outside Stonebridge Green, we cover Lenham Heath (1 mile north), Charing Heath (1 mile north-east), Lenham Forstal (1 mile north), Charing (2 miles east) and Leadingcross Green (2 miles north-west). Further out, we also cover Maidstone (10 miles north-west), Ashford (7 miles south-east), Sittingbourne (10 miles north), Faversham (10 miles north-east), Minster (15 miles north) and Kings Hill (15 miles west).
Around Stonebridge Green
The closest station to Stonebridge Green is Charing station, about 2.2 miles east. A little further out are Coldbridge Castle (1.9 miles west).
What affects the cost of AHU cleaning
Sites vary more than people expect. What affects the quote:
- Access, including roofs, risers and ceiling voids
- When the work can happen, such as evenings, overnight or weekends
- How many systems or sites are involved
- How big the system is
Every site is different, so we price each one individually. Size, access, the condition of the system and when we can work all play a part.
What to send for a quote
What to send for a quote:
- Close-ups of filters, grilles, hatches or access panels
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- When the site is open and when it’s quiet
- The roof, plant room or outside wall the system runs to
Need a price for AHU cleaning? Please give us a ring on 0345 646 2711 or email us and tell us about the site. We’ll explain what we’d do and send a fixed quote before anything is booked.
What staff can safely do
For ventilation and air handling systems, in-house care is mostly about checks: clear grilles, a log of filter changes and reporting anything odd. Cleaning inside ducts and units is specialist work.
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. Inside the ducts, risers and fan is specialist work, which is where we come in.
Keeping the system healthy
Looking after the system between visits is straightforward, and it makes the next visit easier:
- Report stiff or damaged access doors
- File each AHU report in the maintenance log
- Make sure condensate is draining away
- Flag stale or damp smells in the supply air
You receive a TR19® certificate and a photo report after the clean. Keep both with the building’s maintenance records.
Check drain trays and condensate drains during routine maintenance. Catching a slow drain early stops standing water building up.
When to call us in Stonebridge Green
Filters catch most of the dust, but not all of it. What gets through settles on coils, fans and the inside of the casing, a little more each month.
The symptoms we are asked about most are:
- Dirty filters cutting the airflow
- Plant that has been serviced but not cleaned
- Air handling units due a clean after building work
- Stale or musty smells from the ventilation
For schools like Egerton Church of England Primary School, the holidays are the usual time to inspect and clean ventilation.
Before booking anyone
- When the next visit should be, and why
- Whether inaccessible sections are listed on the report
- Which accreditations they hold, and whether you can check them
- What insurance they carry
What happens if it’s left?
A slimy drain tray only gets worse. Leave it and you risk overflows, leaks into the space below and odours carried round the building. Clearing it now is a much smaller job. Systems in rural buildings are often out of sight and out of mind.
Working hours, access and the scale of the site can all change the price. We take each of them into account, and the price is fixed before work begins.
Why choose Duct Doctor in Stonebridge Green
- One number for every site across the South East and London
- Evenings, overnight and weekends, plus 24/7 emergency callout
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Full insurance on every job
What AHU cleaning cannot fix
AHU cleaning can’t fix everything, and we’ll tell you before any work starts. It doesn’t solve:
- Airflow problems caused by the system’s design
- Mechanical faults with motors, belts or bearings
- The supply and extract ducts, quoted separately
If in doubt, give us a ring on 0345 646 2711, or email photos and we’ll say what we think before you book.
What the work covers
- Internal panels
- Drain trays
- Filter sections
- Supply and extract fans
- Dampers and louvres
- Heating and cooling coils
What we do, step by step
Night work is normal for us. Evenings, nights and weekends are when much of our work happens, so the site can open as normal afterwards. On site, the work takes from a few hours for a compact unit to a day or more for a large one. A few pictures of the system help us make the most of a visit to a place like Stonebridge Green.
- We survey the unit from photos or on site and agree what’s included.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- Filters, coils, fan section and casing are cleaned in turn.
- Standing water and slime come out of the tray and the drain is checked.
- You get a TR19® certificate and a photo report.
Getting ready for the visit
- Find the previous report, if there is one
- Tell us where we can park and unload
- Clear the space around the work
Ask for a quote
Quotes are quick. Send a few details and photos, and we usually reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.