Kent · Air handling unit cleaning
Greatness AHU cleaning
Professional AHU cleaning in and around Greatness, timed so the site keeps working and signed off in writing with pictures.
- Rooms that smell stuffy when the system runs
- Dirty fans and fan housings
- Coils clogged with dust and debris
Aftercare tips
Results last longer with the right care. Here’s what we suggest:
- Watch for drips or damp patches near the plant
- Report musty smells from the vents right away
- Look at the condensate drain whenever the unit is serviced
- Keep filter changes on time and recorded
Once the clean is done, we send a TR19® certificate and a report with before and after photos. They belong in the plant or maintenance log.
Regular inspection under TR19® Air shows when cleaning is due, rather than waiting for a problem.
AHU cleaning in Greatness
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. If you have fan sections that haven’t been cleaned in years and blocked condensate drains and slimy trays, we can help, from filter sections, drain trays and supply and extract fans onwards.
Smaller buildings around Greatness often keep their ventilation units in a roof void or plant cupboard, out of sight and easy to overlook. Every unit, large or small, has filters, coils and a drain tray to keep clean.
Each visit ends with a written report and pictures, so there’s a dated record of the work. Where the work is a TR19® Grease clean, the certificate is issued through the BESCA Vent Hygiene Elite portal.
- Place
- Greatness (TN13, TN14, TN15)
- Wider area
- Kent
- Reporting
- Report and photos after the visit
- Quote
- A fixed price before any work starts
- Hours
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
Nearby places to Greatness
More services for Greatness
How the job changes from site to site
Internal casing and panels
Access doors and panels are opened in turn and closed properly afterwards, and check every one is shut.
Heating and cooling coils
Because cooling coils run wet, the dirt on them tends to cling. The coil and its drain tray are cleaned as one job.
When something else is needed
It’s worth knowing the limits before booking:
- Airflow problems caused by the system’s design
- Controls and BMS settings that run the unit
- Mechanical faults with motors, belts or bearings
Not sure which it is? You can ring 0345 646 2711 or email us and we will tell you honestly.
What we work on in Greatness
- Dampers and louvres
- Drain trays
- Heating and cooling coils
- Supply and extract fans
- Filter sections
- Internal panels
The process
Your trading hours come first. We book the visit for a time the area is closed, whether that is an evening, overnight or a weekend. Once we are in, the area is sheeted and anything that has to be off is turned off and cooled, and the job takes anything from half a day for one small unit to several shifts for a plant room full of them. Evenings, weekends or a closed day all work for a site in a place like Greatness.
- First the unit is surveyed, from photos or a visit, and the scope agreed.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- Standing water and slime come out of the tray and the drain is checked.
- You get a TR19® certificate and a photo report.
How to prepare
- Let us know about parking and loading
- Mention any locked doors, roof access or ceiling voids
- Agree a time when the area can be out of use
Getting a quote
We do not publish a price list, because no two systems are the same. We look at your system first, from pictures or on a visit, and then send you a fixed quote. To start, ring 0345 646 2711 or email us.
Related advice
What affects the cost of AHU cleaning
There’s no set price list, because sites vary so much. What we look at:
- Access, including roofs, risers and ceiling voids
- Site requirements such as sign-in and permits
- What state the system is in
- A single visit or a regular plan
No two sites are the same, so we price each one individually. Size, access, the condition of the system and when we can work all make a difference.
What to send for a quote
You don’t need the technical terms. It helps if you can send:
- Any access panels or hatches you can see
- The site address and the type of premises
- The times we could work without disrupting the site
- A few general shots of the system
Some systems can be priced from pictures; others need a survey. Big or complicated sites, and systems that are hard to see in photos, get a survey first. Either way, you get a fixed price before any work starts.
What happens if it’s left?
Cleaning a unit while it only has light dust is quick. Years of build-up make the job longer and harder, especially where there’s been moisture. It’s easy to lose track of when the work was last done on a quieter site.
What you pay depends on the size of the system, what state it’s in and how easy it is to reach. We give you a fixed price before we start, so there are no surprises.
Why book with us
- One contact for all your sites in London and the South East
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Evenings, overnight and weekends, plus 24/7 emergency callout
- Fully insured
Landlords, agents and facilities managers
Facilities teams in offices, schools and healthcare sites book us too in Greatness and across Kent. Work can be phased by floor, building or site around the people who use them.
Where a tenant occupies the premises but the landlord owns the building, 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.
Your questions about AHU cleaning in Greatness
Can you get to a site in Greatness?
Yes. Villages and rural sites across the South East are part of our work, Greatness included. A survey first, from pictures or a visit, means we arrive with the right kit.
Do you do school ventilation cleaning in Greatness in the summer holidays?
Yes, holiday work suits schools best. Around Greatness, the Food Standards Agency lists about 18 schools and colleges with registered kitchens within a mile and a half or so. Tell us your holiday dates and we’ll book the visit for when the site is empty.
How much notice do you need?
The more notice, the better, particularly for night and weekend visits. We typically quote within one working day, and there’s a 24/7 line for emergencies.
Can you clean without disrupting the building?
Yes. Evening, overnight and weekend work is all possible, so offices, schools and shops can carry on.
Do you offer emergency callouts?
Yes. Our emergency line runs 24/7, for problems that can’t wait. Call us any time and explain what’s happened.
Which parts of an air handling unit do you clean?
Every section that collects dirt: filters, coils, tray, fan and panels. We confirm the scope after looking at the unit.
Is there a report after cleaning?
Yes, both a certificate and a report with photos. The report also suggests when the unit should next be inspected.
What do you do with what you remove?
We contain it and take it with us. Grease, debris and waste water are collected as the work goes on rather than letting it spread.
AHU cleaning in Greatness: local notes
The FSA’s food hygiene register lists about 18 schools, colleges and universities, about 9 care, childcare and hospital premises and about 3 hotels and B&Bs with registered kitchens or food service within 1.5 miles or so of the middle of Greatness. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. We cover Greatness, about 19 miles from central London, as part of our work across London and the South East. The visit is fixed around your opening hours, not ours. The nearest hospital to Greatness is Sevenoaks Hospital, about within half a mile south-west. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.
For schools like St John's Church of England Primary School, the holidays are the usual time to inspect and clean ventilation. For workplaces around Bat & Ball station with mechanical ventilation, cleaning can be done in the evening or at weekends. Hospitals such as Sevenoaks Hospital (about less than half a mile south-west) show how much a building can rely on clean ventilation, and smaller healthcare sites near Greatness are no different.
Greatness is about 1 mile north-east of Sevenoaks, in Kent. Wherever you are in the TN13 postcode area, we cover AHU cleaning for commercial sites. Greatness is one of 922 towns, villages and districts in Kent where we work for commercial clients. We also work in Maidstone, around 14 miles away.
All of TN13, TN14 and TN15 is within our area for AHU cleaning, from the main roads to the quietest streets. If you need AHU cleaning at premises on Seal Road, Mill Lane and Sandy Lane or anywhere close by, we can help. If your site is just outside Greatness, we cover Seal (1 mile east), Godden Green (2 miles south-east), Styants Bottom (3 miles east), Bitchet Green (3 miles south-east) and Stone Street (3 miles south-east). Within a short drive, we also cover Maidstone (14 miles east), Dartford (11 miles north), Royal Tunbridge Wells (11 miles south), Gravesend (12 miles north-east), Tonbridge (7 miles south-east) and Northfleet (12 miles north-east).
Near you in Greatness
Typical jobs here are in premises near The Old Bat and Ball pub, Wildernesse School and Knole Academy, among other places. Greatness has its own railway station: Bat & Ball station. Other landmarks nearby include Sevenoaks Museum (1.3 miles south) and Kemsing Castle Bank (1.7 miles north-east). Green spaces nearby include Dryhill Nature Reserve.