Kent · Air handling unit cleaning
Old Tree AHU cleaning
Our technicians work in Old Tree on cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces. Out-of-hours visits, a fixed quote and a written report with photos as standard.
- Units needing a clean before a new tenant or handover
- Stale or musty smells from the ventilation
- Intake sections clogged with outdoor debris
AHU cleaning in Old Tree, done properly
Heating and cooling coils trap dust that gets past the filters. Dirt on the fins holds back air and makes the unit work harder to do the same job. Coils are cleaned carefully, with methods chosen so the fins are not flattened. We are often asked to deal with units needing a clean before a new tenant or handover and rooms that smell stuffy when the system runs, across dampers and louvres, internal panels and supply and extract fans.
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.
The report is your system’s health record: dated, with pictures, and showing what was done. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal and sits alongside the report.
- Location
- Old Tree (CT3)
- Wider area
- Kent
- Reporting
- Report and pictures after the visit
- Quotes
- A fixed price before we start
- When we work
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Checked
- 30 October 2026
What affects the cost of AHU cleaning
A fixed price needs a few facts first. We look at:
- The condition of the system
- Whether we need access equipment or extra panels
- Working hours and out-of-hours timing
- Where the site is and how we reach it
Working hours, access and the scale of the site all affect the cost. We take each of them into account, and the price is fixed before any work starts.
What we need to know
Photos let us diagnose from a distance. Try to include:
- How we’d reach plant on a roof or in a plant room
- A few general shots of the system
- The postcode and the type of business
- Problems your staff have spotted
Every quote begins with a look at the system, either from pictures and details you send or from a site visit. Then we send a fixed price, before work begins.
Landlords, agents and facilities managers
Running several sites is easier with one contractor. We work across London and the South East, so visits at different addresses can be planned together and kept on a regular cycle.
Managing agents often deal with us directly. Send the address, what’s needed and how access works and we’ll come back with a fixed quote.
Nearby places to Old Tree
What else we do in Old Tree
Different parts, different methods
Rooftop and plant room units
Rooftop units take the weather, and intakes can collect leaves and debris. We clean the intake and first stage of filters along with the rest.
Drain trays
Condensate from the coil drips into a tray beneath it. Standing water and slime are removed and the outlet is checked.
What happens on the day
Night work is normal for us. Evenings, nights and weekends are when much of our work happens, so a kitchen or building can carry on as usual the next day. The visit itself takes half a day to a full day per unit, with large plant planned over several shifts. A few photos of the system help us make the most of a visit to a place like Old Tree.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- Coils and trays are cleaned and the condensate drain cleared.
- The unit is closed up and handed back, with a report to follow.
Preparing for the visit
- Let us know how we reach the system, including roofs, risers and plant rooms
- Have your last certificate or report to hand
- Agree a time when the area can be out of use
How to get a quote
Photos are enough for some jobs, while others need a look on site. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before any work starts.
Advice
Old Tree questions
Is Old Tree within the area you cover?
Yes, smaller places are covered as well as towns. Let us know about access, parking and anything unusual about getting there when you book.
Do you work overnight in Old Tree?
Yes, evening, overnight and weekend work is normal for us. Your customers, staff or residents in Old Tree needn’t be disturbed. Your opening times are the first thing we ask for.
How much 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. You get a fixed price before we start.
What do you do to protect the area?
We start with protection: sheeting over floors, worktops and anything close to the work. We tidy up and take our waste away before we leave.
What happens to the waste?
It leaves the site with us at the end of the visit. While we work, it’s kept contained to keep the area clean.
Are you fully insured?
Yes, we are fully insured. CHAS and SafeContractor accreditation sit alongside it for clients who vet their contractors.
Can you fix a faulty AHU?
Mechanical repairs to the unit are for your HVAC maintenance contractor. We clean the unit and report anything we see that needs attention.
Are you accredited?
We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we carry full insurance.
In-house cleaning or a specialist?
For ventilation and air handling systems, in-house care is mostly about checks: clear grilles, a log of filter changes and reporting anything odd. The inside of ducts and units needs a specialist.
Staff cleaning does not replace a specialist visit; it supports it. Regular in-house cleaning slows the build-up, but the parts you cannot see still need a specialist at the right interval.
What we’re called out for in Old Tree
Cooling coils create condensation, and that water has to go somewhere. A blocked outlet or a badly sloped tray leaves standing water, and that’s where slime and odours start.
Keep an eye out for these warning signs:
- Debris and leaves in the fresh air intake
- Fan sections that haven’t been cleaned in years
- Plant that needs cleaning after a refit
- Dirty filters cutting the airflow
If you run a surgery, dental practice or care home near Old Tree, clean ventilation matters as much to you as to a hospital like St Martins Hospital (about 5.1 miles south-west).
Questions to ask before you book
- Whether they’re fully insured
- How areas they cannot reach will be recorded
- When the next visit should be, and why
- Whether VAT is included
Ventilation in Old Tree buildings
Going by the FSA’s register, there are about 4 hospitals, care homes and childcare premises serving food in Old Tree and the streets around it, up to about 1.5 miles out. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. About 5.1 miles south-west of Old Tree is St Martins Hospital, the nearest hospital. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. We cover Old Tree, about 56 miles from central London, as part of our work across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site.
If you manage a school such as Hoath Primary School, ventilation cleaning is best booked for the holidays.
Old Tree is about 3 miles south-east of Herne Bay, in Kent. If you need AHU cleaning in Old Tree, please call us on 0345 646 2711 or email us for a fixed quote. Our area covers London and the South East, Old Tree included. Old Tree is one of 922 places in Kent we cover for AHU cleaning. For sites nearby, see our Maidstone page, about 28 miles away.
All of CT3 is covered for AHU cleaning, from the main roads to the quietest streets. If your site is just outside Old Tree, we cover Maypole (1 mile west), Hoath (1 mile south-west), Millbank (1 mile north-west), Knave's Ash (1 mile south-west) and Hollow Street (1 mile south-east). Within a short drive, we also cover Canterbury (6 miles south-west), Margate (10 miles east), Dover (15 miles south), Ramsgate (10 miles east), Broadstairs (11 miles east) and Whitstable (6 miles west).
Near you in Old Tree
We work in commercial kitchens and buildings around Curtis Wood and Spires Academy. For rail, the closest station is Herne Bay station, about 2.9 miles north-west. Other landmarks nearby include St Martins Hospital (5.1 miles south-west). The countryside around Old Tree includes West Blean and Thornden Woods.
Honest limits
To be straight with you, some problems need a different fix:
- Coils that are corroded or leaking and need replacing
- Dirty ducts beyond the unit itself
- Airflow problems caused by the system’s design
Not sure which it is? You can call us on 0345 646 2711 or drop us a line and we’ll tell you honestly before you book.
What the work covers
- Internal panels
- Supply and extract fans
- Dampers and louvres
- Drain trays
- Heating and cooling coils
- Filter sections