Kent · Air handling unit cleaning
Air handling unit cleaning in Hook Green, Kent
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Hook Green, surveyed first and signed off with a written report and pictures. Call for a fixed quote.
- Air handling units never cleaned inside
- Dirty coils holding back the airflow
- Debris and leaves in the fresh air intake
Common problems we fix in Hook Green
Dirt in an AHU matters in two ways: air quality, since the unit feeds occupied rooms, and performance, since dirt makes it strain. For the people using the building every day, that’s the air they breathe for hours on end.
Signs it’s time to call us include:
- Coils clogged with dust and debris
- Units that have only ever had filter changes
- Stale or musty smells from the ventilation
- Units needing a clean before a new tenant or handover
If you manage a school such as Sedley's Church of England Voluntary Aided Primary School, ventilation cleaning is best booked for the holidays.
What your quote should include
- Whether the whole system is included, or only the parts that are easy to reach
- Proof of insurance
- What hours they’ll be on site
- How VAT is shown on the quote
AHU cleaning in Hook Green
Our AHU cleans for sites in Hook Green cover the parts that collect dirt: the filter section, heating and cooling coils, drain trays, fan and casing. Every clean comes with a TR19® certificate and before and after photos in a report. The work covers filter sections, supply and extract fans and dampers and louvres, and the jobs we see most are intake sections clogged with outdoor debris and rooms that smell stuffy when the system runs.
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.
Nothing is signed off by word of mouth: a written report, dated and illustrated with pictures, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. Any parts we couldn’t reach are recorded on it too.
- Place
- Hook Green (DA13)
- Wider area
- Kent
- Paperwork
- Report and pictures after the visit
- Quotes
- A fixed quote up front
- Hours
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
Managing agents and facilities teams in Hook Green
Managing agents often deal with us directly. Send the address, what’s needed and how access works, and we’ll send a fixed quote.
Whether it’s one building or many, you get the same standard: diagnosis, a fixed price, work booked around your hours and a written report with pictures.
How it works
We’re used to working while the site is closed. Evenings, nights and weekends are when much of our work happens, so a kitchen or building can carry on as usual the next day. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. In a small place like Hook Green, the journey is planned ahead and the visit arranged around the site’s hours.
- 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.
- We finish with the fan section and the drain tray.
- We take after photos and issue the certificate and report.
Before we arrive
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Make sure equipment near the work can be switched off and left to cool
- Tell us about site rules, permits or sign-in
Ask for a quote
The quickest way to a quote is to send photos: the system from a couple of angles, plus any access panels or hatches. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.
Related advice
What a clean won’t put right
We will not sell you work that does not address the problem, so these are the things it won’t cover:
- Building management system faults
- Ventilation that was badly designed in the first place
- Mechanical faults with motors, belts or bearings
If in doubt, phone us on 0345 646 2711 or drop us a line and we will say what we think.
Parts of the system we cover
- Filter sections
- Internal panels
- Heating and cooling coils
- Dampers and louvres
- Supply and extract fans
- Drain trays
Between visits
To keep the system working properly between visits:
- Plan the next inspection before the last report gets filed away
- Make sure the unit’s access doors open easily
- Make sure condensate is draining away
- File each AHU report in the maintenance log
You receive a TR19® certificate and a photo report after the clean. They belong in the plant or maintenance log.
Change or clean filters on time. Once filters clog, dirt starts getting past them.
What your team can do, and what needs us
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. That’s our job.
In-house cleaning and specialist cleaning do different jobs. 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 in Hook Green: local notes
The FSA’s food hygiene register lists about 12 schools, colleges and universities and about 10 hospitals, care homes and childcare premises with registered kitchens or food service within about 1.5 miles of central Hook Green. Busy, occupied buildings like these are where clean supply air matters most. Darent Valley Hospital is the nearest hospital, about 3 miles north-west of Hook Green. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. At about 19 miles from central London, Hook Green sits well inside the area we cover. The visit is fixed around your opening hours, not ours.
If you run a surgery, dental practice or care home near Hook Green, clean ventilation matters as much to you as to a hospital like Darent Valley Hospital (about 3 miles north-west).
Hook Green is about 2 miles south-west of Northfleet, in Kent. Whether your site is in the middle of Hook Green or further out, AHU cleaning is available to all kinds of commercial premises, from a single unit to a large public building. Hook Green is one of 922 places in Kent where we work for AHU cleaning. For sites nearby, see our Maidstone page (14 miles or so).
Work in DA13 is surveyed, quoted and booked the same way as anywhere else. That includes premises on Fred Mead, Barker Fields and Lambert Mews and nearby roads. Neighbouring places we cover for AHU cleaning include Southfleet (1 mile north-east), Betsham (1 mile north-west), Northfleet Green (1 mile east), Painters Ash (1 mile north-east) and Springhead (1 mile north). Within a short drive, we also cover Maidstone (14 miles south-east), Dartford (5 miles north-west), Sevenoaks (11 miles south-west), Gravesend (3 miles north-east), Tonbridge (15 miles south) and Swanley (6 miles west).
What’s near Hook Green
Locally, jobs take us to businesses close to Longfield Chalk Bank, Black Lion pub and Longfield Academy, among other places. The nearest railway station is Longfield station, about 1.2 miles south-west of the centre. Nearby you’ll also find Bluewater (2.8 miles north-west) and Darent Valley Hospital (3 miles north-west). Green spaces nearby include Sawyers Lake.
Places near Hook Green
What else we do in Hook Green
Questions from Hook Green
Do you work overnight in Hook Green?
Yes, we can come after you close and finish before you open. The work in Hook Green can fit around your hours. Your opening times are the first thing we ask for.
Will you come out to Hook Green?
Yes, smaller places are covered as well as towns. Just mention lanes, gates or anything else about the site when you book.
Can you set up regular visits?
Yes. Regular plans can run on 3, 6 or 12-monthly cycles, to suit the system and how it’s used.
What does AHU cleaning cost?
There’s no set price, as it depends on the job: how big it is, what state it’s in, how we reach it and the working hours. We fix the price before any work starts.
Is there a report after cleaning?
Yes, both a certificate and a report with pictures. The report also suggests when the unit should next be inspected.
Do you do ventilation duct cleaning too?
Yes, the ductwork, grilles and diffusers the unit serves. We’ll tell you after the survey whether the ducts need it.
Can you look after several sites?
Yes. You deal with one contact for every site across London and the South East, with visits on a regular schedule.
How long will the unit be out of action?
Typically the clean takes from a few hours for a compact unit to a day or more for a large one. The shutdown is planned to fit, out of hours if needed.
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. Dealing with it early keeps the clean straightforward. Equipment tucked in a roof space or outbuilding near Hook Green rarely gets looked at unless someone books it.
Combining work into one visit or one programme often makes better use of the time. Mention every system or site you need covered, and you’ll get one fixed quote.
Why Hook Green businesses choose us
- Photo reports with every job
- Survey first, then a fixed quote
- Fully insured
- One number for every site across the South East and London
Take a look at our cost guide and how to check a contractor.