Kent · Air handling unit cleaning
Air handling unit cleaning in Coldharbour, Kent
Specialist AHU cleaning for Coldharbour: a survey, a fixed price, careful work and proper paperwork. Ask us for a fixed quote.
- Odours coming through the supply air
- Units that have only ever had filter changes
- Dirty filters cutting the airflow
What AHU cleaning looks like in Coldharbour
Going by the FSA’s register, there are about 8 schools, colleges and universities and about 6 caring premises (care homes, nurseries and hospitals) serving food within roughly a mile and a half of the centre of Coldharbour. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. Coldharbour, about 24 miles from central London, is within our usual area. Evening, overnight and weekend visits are all possible. About 3.4 miles south of Coldharbour is Tonbridge Cottage Hospital, the nearest hospital. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
For schools like St Margaret Clitherow Catholic Primary School, the holidays are the usual time to inspect and clean ventilation.
Coldharbour is about 2 miles north of Tonbridge, in Kent. If you need AHU cleaning in Coldharbour, it’s easy to get a fixed quote: please phone us on 0345 646 2711, or email photos. Our area covers London and the South East, including Coldharbour. Coldharbour is one of 922 towns, villages and districts in Kent where we work for commercial clients. We also work in Maidstone, about 12 miles from Coldharbour.
Every address in TN11 is covered for AHU cleaning, from the main roads to the quietest streets. We also cover Hildenborough (1 mile south-west), Hilden Park (1 mile south), Watt's Cross (1 mile west), Budds (1 mile north) and Stocks Green (2 miles south-west). We also work in nearby towns such as Maidstone (12 miles east), Dartford (15 miles north), Sevenoaks (5 miles north-west), Royal Tunbridge Wells (6 miles south), Gravesend (15 miles north) and Northfleet (15 miles north).
What’s near Coldharbour
In Coldharbour, that means kitchens and buildings near Hugh Christie Technology College and The Flying Dutchman Public House. The closest station to Coldharbour is Hildenborough station, about 1.6 miles south-west of the centre. Well-known places in the area include Tonbridge Castle (2.2 miles south) and The Milne Museum (2 miles south). The countryside around Coldharbour includes Tudeley Woods RSPB reserve and Barden Lake.
About our AHU cleaning in Coldharbour
Heating and cooling coils trap dust that gets past the filters. A coated coil restricts airflow and makes the unit work harder. Coils are cleaned carefully, with methods chosen so the fins are not flattened. Typical jobs include air handling units with blocked filters and dirty coils holding back the airflow, across dampers and louvres, internal panels and heating and cooling coils.
In a village or hamlet like Coldharbour, few buildings have mechanical ventilation, but where it’s fitted, it needs the same inspection and cleaning as anywhere.
Each visit ends with a written report and photos, so there’s a dated record of the work. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Location
- Coldharbour (TN11)
- Region
- Kent
- Records
- Report and pictures after the visit
- Price
- A fixed quote up front
- Hours
- When your site is closed, plus a 24/7 line
- Call
- 0345 646 2711
- Checked
- 30 October 2026
Multi-site and managed buildings
When the building owner and the occupier are different, it’s worth checking the lease for who maintains the systems. We’re happy to deal with either side and send the paperwork to whoever needs it.
We regularly work with managing agents. Tell us the site, the work and the access arrangements and we’ll come back with a fixed quote.
What we do, step by step
Every visit runs to the same pattern: protect the area, isolate whatever needs isolating, do the work, tidy up and hand over the paperwork. The visit itself takes a single shift for a typical unit, longer for large or heavily soiled ones. We agree a date with you, plan the drive to Coldharbour and turn up when the site is quiet.
- First we agree when the unit can be switched off, including evenings or weekends.
- Before cleaning, each section is photographed.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- We take after photos and issue the certificate and report.
How to prepare
- Have your last certificate or report to hand
- Name a contact who can let us in at the agreed time
- Let us know when the site is closed or quiet
Get a fixed quote
Here’s what helps us quote: the address, the type of site and when it’s open, a few pictures and any previous report or certificate. Once you have those, ring 0345 646 2711 or drop us a line.
Related advice
Coldharbour questions
Do you do school ventilation cleaning in Coldharbour in the summer holidays?
Yes, holiday work suits schools best. There are about 8 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Coldharbour. Tell us your holiday dates and we will book the visit for when the site is empty.
Do you work in villages like Coldharbour?
Yes, smaller places are covered as well as towns. Just mention lanes, gates or anything else about the site when you book.
How much notice do you need?
The more notice, the better, particularly for night and weekend visits. Quotes typically come back within one working day, and emergencies are covered by our 24/7 line.
Will you repair the fan or motor?
We clean the unit and flag faults rather than repair them, with pictures where it helps.
How much does AHU cleaning cost?
The cost depends on the size of the system, its condition, access and timing. Call for a fixed quote, typically ready within one working day.
Do you have insurance?
Yes. We carry full insurance, and we have been trading since 2009.
What if parts of the system can’t be reached?
Anything we cannot reach goes on the report, with a note of where it is, and we explain what access is needed, such as extra access panels in ductwork.
How do you protect the area?
By covering it before any work starts. The work is kept contained and clean down when we finish.
Places near Coldharbour
More services for Coldharbour
What staff can safely do
In-house cleaning and specialist cleaning do different jobs. Wiping filters daily and washing them weekly keeps the visible parts in order, but grease that has passed the filters is out of reach. Reaching it takes a specialist with the right equipment.
Logging matters as much as cleaning. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, next to our reports.
Keeping the system healthy
A little care between visits keeps the system in better shape. We recommend:
- Keep inspection doors on the unit in good order
- Store the TR19 paperwork where auditors can find it
- Plan the next inspection before the last report gets filed away
- Do not store bins or materials near the intake
We recommend when the unit should next be inspected or cleaned, based on what we found. TR19® Air is risk-based, so the interval depends on the unit and how the building is used.
Make sure access doors and panels on the unit open easily. If a section is hard to get into, it tends not to get checked.
Why act early in Coldharbour
Standing water in a drain tray doesn’t clear itself. Left alone, it can overflow, leak into the plant area or ceiling below and spread smells through the system. Clearing it now is a much smaller job. In a place like Coldharbour, ductwork and fans are easy to forget until something goes wrong.
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 any work starts.
What you get with us
- Fixed quotes from a survey or pictures
- Every job surveyed first
- One contact for all your sites in London and the South East
- Full insurance on every job
See what affects the cost or our accreditations and certificates.
What AHU cleaning can’t fix
In fairness, there are a few things this work won’t fix:
- Coils that are corroded or leaking and need replacing
- Dirty ducts beyond the unit itself
- Controls and BMS settings that run the unit
If in doubt, call us on 0345 646 2711, or email photos and we will say what we think before booking.
Parts of the system we cover
- Filter sections
- Drain trays
- Dampers and louvres
- Heating and cooling coils
- Internal panels
- Supply and extract fans
What we are called out for in Coldharbour
Filters that aren’t changed or cleaned on time clog up, which cuts the airflow and can let air slip round the filter. Then the rest of the unit takes the load.
Any of these means the system needs a check-up:
- Dirty filters cutting the airflow
- Dirty coils holding back the airflow
- Units that have only ever had filter changes
- Fan sections that haven’t been cleaned in years
Healthcare buildings such as Tonbridge Cottage Hospital, about 3.4 miles south, depend on their ventilation; if you manage a surgery, clinic or care home near Coldharbour, yours matters too.
What your quote should include
- Whether the price is fixed
- Whether a survey comes first
- Exactly which parts of the system are covered
- What happens if part of the system can’t be accessed