Kent · Air handling unit cleaning
Air handling unit cleaning in Bonnington, Kent
AHU cleaning for commercial sites in Bonnington and across Kent. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Condensate trays that won’t empty
- Debris and leaves in the fresh air intake
- Dust-coated heating and cooling coils
How we handle AHU cleaning in Bonnington
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 photos, so the report shows exactly what was done. If you have dirty filters cutting the airflow and dirty fans and fan housings, we can put it right, from supply and extract fans, heating and cooling coils and filter sections onwards.
Work in a small place like Bonnington starts with agreeing access and timings.
The sign-off is always in writing: 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.
- Location
- Bonnington (TN25)
- Wider area
- Kent
- Reporting
- Report and pictures after the visit
- Quote
- A fixed price before work begins
- Hours
- When your site is closed, plus a 24/7 line
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
Bonnington: your questions answered
Is Bonnington within the area you cover?
Yes. Villages and rural sites across the South East are part of our work, Bonnington included. Just mention lanes, gates or anything else about the site when you book.
Can you come to Bonnington after we close?
Yes, we can come after you close and finish before you open. It means the site in Bonnington keeps running as normal. Just phone us on 0345 646 2711, or email photos with your opening times and we will plan around them.
Can you quote from pictures?
In many cases, yes. Photos of the system and the access, plus your opening hours and last report, are often enough. Where we can’t see enough, we arrange a survey.
How much notice should we give?
It depends on the time you need and how big the job is. Mention your preferred dates with your enquiry, and for anything urgent, ring our 24/7 emergency line.
What do you need from me for a quote?
Only a few details: where it is, what kind of site, when it’s open and the access. Photos and any previous paperwork make it quicker. Then call us on 0345 646 2711, or send details by email.
What do you do with what you remove?
It’s contained and taken away. Grease, debris and waste water are collected as the work goes on rather than letting it spread.
What does AHU cleaning cost?
There’s no set price, as it depends on the job: the size of the system, its condition, access and when we can work. You get a fixed price before any work starts.
Do you have insurance?
Yes, fully. We also hold CHAS and SafeContractor, for sites that check contractor safety.
What AHU cleaning cannot fix
It’s worth knowing the limits before booking:
- Airflow problems caused by the system’s design
- Damaged coils beyond cleaning
- Dirty ducts beyond the unit itself
If you are not sure, just give us a ring on 0345 646 2711 or send us an email and we will give you a straight answer before booking.
What the work covers
- Heating and cooling coils
- Internal panels
- Supply and extract fans
- Filter sections
- Dampers and louvres
- Drain trays
Between visits
So the system stays in good health:
- Look at the condensate drain whenever the unit is serviced
- Keep filter changes on time and recorded
- Note any water around the unit or leaks below it
- Report musty smells from the vents straight away
Stick to the filter change schedule, as that does more than anything to keep the unit clean. Log every change so it’s easy to see when the next is due.
Check drain trays and condensate drains during routine maintenance. A drain that’s cleared early never gets to the slime stage.
What happens on the day
Every visit runs to the same pattern: protect the area, isolate whatever needs isolating, carry out the AHU cleaning, tidy up and leave you the report. On site, the work takes anything from half a day for one small unit to several shifts for a plant room full of them. Rural roads and tight entrances are worth telling us about before a visit to Bonnington.
- We start with a survey of the unit and a fixed quote for the work.
- The unit is shut down with your site team and the area protected.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- Drain trays are cleared and cleaned and the outlet checked.
- We close up the unit and send the certificate and before and after pictures.
Before we arrive
- Let us know when the site is closed or quiet
- Arrange a key holder or contact on site
- Dig out any earlier paperwork for the system
Getting a quote
Quotes are quick. Send a few details and photos, and we typically reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.
Related advice
What the work involves, part by part
Heating and cooling coils
Heating and cooling coils have tightly packed fins that trap fine dust. They’re cleaned using methods that won’t bend or flatten the fins.
Rooftop and plant room units
Units outside are exposed to weather and windblown debris. The intake section gets particular attention.
When to call us in Bonnington
Filters that are not changed or cleaned on time clog up, cutting airflow and sometimes letting dirty air bypass them altogether. After that, the coils and fan collect what the filter should have caught.
Clients normally contact us when they notice something like this:
- Air handling units never cleaned inside
- Dirty coils holding back the airflow
- Odours coming through the supply air
- Plant that needs cleaning after a refit
Hospitals such as William Harvey Hospital (about 3.8 miles north) show how much a building can rely on clean ventilation, and smaller healthcare sites near Bonnington are no different.
Questions to ask before you book
- Whether the whole system is included, or only the parts that are easy to reach
- What paperwork you get at the end
- Whether the price is fixed
- Which accreditations they hold, and whether you can check them
Ventilation in Bonnington buildings
Bonnington is about 53 miles from central London, well within the area we cover across London and the South East. Visits are booked around your hours, evenings and weekends included. For Bonnington, the closest hospital is William Harvey Hospital, roughly 3.8 miles north. Clean air matters most where people are unwell, and that’s as true in a care home as in a hospital.
School buildings such as Aldington Primary School are usually done in the holidays, so classrooms are not disturbed.
Bonnington is about 5 miles south-east of Ashford, in Kent. Anywhere in TN25, we cover AHU cleaning for commercial sites. Bonnington is one of 922 towns, villages and districts in Kent we cover for AHU cleaning. Our Maidstone page covers sites nearby, about 21 miles away.
Work in TN25 is surveyed, quoted and booked the same way as anywhere else. Local streets include Cherry Orchard Lane and Bourne Road, and we cover them all for AHU cleaning. We also cover the places around Bonnington: Aldington (1 mile north-east), Clap Hill (1 mile north-east), Aldington Frith (1 mile north-west), Stonestreet Green (1 mile north-east) and Postling Green (1 mile east). Further out, we also cover Ashford (5 miles north-west), Canterbury (15 miles north-east), Folkestone (10 miles east), Hythe (7 miles east), Hawkinge (10 miles east) and Wincheap (14 miles north-east).
Landmarks near Bonnington
Around Bonnington, our work takes us to kitchens and buildings near Poulton Wood and Walnut Tree Inn and the streets around them. Bonnington’s nearest station is Ham Street station, about 3.6 miles west of the centre. Well-known places in the area include William Harvey Hospital (3.8 miles north) and Lympne Castle (4.2 miles east). Green spaces nearby include Hatch Park.
Staff cleaning versus specialist work
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. That’s our job.
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.
How we price AHU cleaning
The survey tells us what the work involves. The main factors are:
- The size of the system
- Whether we need access equipment or extra panels
- The condition we find in the survey
- The times the site is available
Putting the work off seldom saves money. Build-up, wear and faults tend to get worse, not better, which can make the next visit longer. If you’re unsure, call us on 0345 646 2711 or drop us a line for straight advice and a fixed quote.
Asking for a quote
We can often survey from pictures. The most useful are:
- Wide pictures of the system and the area around it
- How we’d reach plant on a roof or in a plant room
- The paperwork from the last visit, if you have it
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
For a fixed quote, give us a ring on 0345 646 2711 or email us and tell us the type of site, your opening hours and roughly what the system looks like. A few pictures and your last certificate or report help a lot. We normally come back within one working day.