Kent · Air handling unit cleaning
Air handling unit cleaning in Seal, Kent
Air handling unit cleaning for Seal, with a survey first and a report with photos at the end. Call for a fixed quote.
- Condensate trays that will not empty
- Air handling units never cleaned inside
- Dust-coated heating and cooling coils
How we handle AHU cleaning in Seal
Units vary a lot in size, age and layout, whether it’s a compact unit in a ceiling void or a big unit on the roof. Every job starts with a survey, from photos or on site, followed by a fixed quote, so you know where you stand. Typical jobs include debris and leaves in the fresh air intake and filters that are clogged or overdue, on dampers and louvres, supply and extract fans and filter sections.
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.
Think of the report as the system’s health record: a dated account with photos of everything we did. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal, ready for your insurer.
- Location
- Seal (TN15)
- Wider area
- Kent
- Reporting
- Photo report after each visit
- Price
- A fixed price before any work starts
- When we work
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
Leave it or put it right?
Leave an AHU uncleaned and the dirt doesn’t stay put. It’s carried through the ductwork and out of the grilles, which is why the unit and the ducts are best cleaned together. Out of sight is the usual reason a rural system goes too long without attention.
We do not list prices on the website, because the cost depends on the site in front of us. Call for a fixed quote, and we’ll explain what it covers.
Why Seal businesses choose us
- Each visit written up, with pictures
- In business since 2009
- Survey first, then a fixed quote
- One contact for all your sites in London and the South East
What we are called out for in Seal
Mechanical servicing keeps a unit running, but it doesn’t always include cleaning the inside. That means a unit can tick every service box and still be carrying years of dirt.
Any of these means the system needs a check-up:
- Air handling units with blocked filters
- Units needing a clean before a new tenant or handover
- Air handling units never cleaned inside
- Dirty coils holding back the airflow
Healthcare buildings such as Sevenoaks Hospital, about 1.1 miles west, depend on their ventilation; if you manage a surgery, clinic or care home near Seal, yours matters too.
What your quote should include
- When they can work, and whether that is outside your opening hours
- What’s included in the scope, part by part
- How areas they cannot reach will be recorded
- If they look at the system before pricing
Between visits
Aftercare is simple, and it helps at the next visit:
- Watch for drips or damp patches near the plant
- Keep the area around the fresh air intake clear
- Flag stale or damp smells in the supply air
- Make sure the unit’s access doors open easily
You receive a TR19® certificate and a photo report after the clean. Keep both with the building’s maintenance records.
Make the drain tray part of every maintenance visit. A drain that’s cleared early never gets to the slime stage.
Ventilation in Seal buildings
Food Standards Agency records list about 15 schools, colleges and universities and about 4 hospitals, care homes and childcare premises registered as food businesses in and around Seal, up to about a mile and a half out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Seal is about 20 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. The nearest hospital to Seal is Sevenoaks Hospital, about 1.1 miles west. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.
Wherever a school like Seal Church of England Voluntary Controlled Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Seal is about 2 miles north-east of Sevenoaks, in Kent. Sites in Seal get the same service as everywhere we cover: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with pictures. Our Kent coverage runs to 922 places, Seal among them. Our Maidstone page covers sites nearby (13 miles or so).
All of TN15 is within our area for AHU cleaning, from busy streets to back roads. Streets in the area include High Street, Church Road and Jubilee Rise, all of which we cover for AHU cleaning. Close by, we work in Greatness (1 mile west), Godden Green (1 mile south), Styants Bottom (2 miles east), Stone Street (2 miles south-east) and Bitchet Green (2 miles south-east). Within a short drive, we also cover Maidstone (13 miles east), Dartford (11 miles north), Royal Tunbridge Wells (11 miles south), Gravesend (12 miles north-east), Tonbridge (7 miles south) and Northfleet (11 miles north-east).
What’s near Seal
In Seal, that means kitchens and buildings near Wildernesse School, Kemsing Down and The Five Bells Public House, among other places. Seal’s nearest station is Bat & Ball station, roughly 1.1 miles west. Well-known places in the area include Sevenoaks Hospital (1.1 miles west) and Sevenoaks Museum (1.7 miles south-west). Open spaces near Seal include Dryhill Nature Reserve.
How the job changes from site to site
Fans and fan sections
The fan moves all of the unit’s air, so dirt on it gets spread around. The impeller, its housing and the fan chamber are cleaned.
Drain trays
The drain tray collects water from the cooling coil. Standing water and slime are removed and the outlet is checked.
When something else is needed
Not every problem is solved by AHU cleaning, and we will tell you before any work starts. It won’t put right:
- Ventilation that was badly designed in the first place
- Ductwork downstream of the unit, which is a separate clean
- Coils that are corroded or leaking and need replacing
If in doubt, give us a ring on 0345 646 2711 or email us and we’ll say what we think.
Parts of the system we cover
- Heating and cooling coils
- Supply and extract fans
- Filter sections
- Drain trays
- Internal panels
- Dampers and louvres
Seal: your questions answered
Can you get to a site in Seal?
Yes. Seal is within the area we cover across London and the South East. A survey first, from pictures or a visit, means we arrive with the right kit.
Do you work overnight in Seal?
Yes, we can come after you close and finish before you open. That way a site in Seal does not have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
Can you price the work without visiting?
In many cases, yes. With good photos, the site type and your last report, we can price many jobs. Larger or hidden systems need a survey on site first.
How long does it take to clean an air handling unit?
As a guide, it takes from a few hours for a compact unit to a day or more for a large one. We plan the shutdown around that, including evenings or weekends.
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.
What is TR19?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It covers how systems are inspected, cleaned and checked, and it takes a risk-based approach.
What types of premises do you cover?
We work for restaurants, pubs, hotels, schools, colleges, hospitals, care homes, offices and shops, plus food production and leisure sites.
When should our AHU next be cleaned?
There’s no single answer; it comes down to the building and the unit. Regular inspection shows when it’s due, and the report recommends a next date.
For landlords and multi-site operators
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. Where responsibility is shared, records matter even more.
We also work for facilities teams across offices, schools and healthcare across Kent. Work can be phased by floor, building or site around the people who use them.
Other services in Seal
How the visit works
On the day, we arrive at the time agreed with you, often in the evening, overnight or at the weekend so the site keeps working. Anything that needs to be off for the work is switched off and left to cool before we start, and the area around the work is covered and protected. On site, it takes anything from half a day for one small unit to several shifts for a plant room full of them. In a small place like Seal, the journey is planned ahead and the visit arranged around the site’s hours.
- We survey the unit from pictures or on site and agree what’s included.
- We arrange the shutdown with your staff and sheet the area.
- Filters, coils, fan section and casing are cleaned in turn.
- Drain trays are cleared and cleaned and the outlet checked.
- A TR19® certificate and photo report follow the clean.
Getting ready for the visit
- Dig out any earlier paperwork for the system
- Mention any parking or loading restrictions
- Let us know how we reach the system, including roofs, risers and plant rooms
Get a fixed quote
Every quote begins with a look at the system, either from photos and details you send or from a site visit. After that, you get a fixed price for the work so you know the cost before work begins.