Kent · Air handling unit cleaning

AHU Cleaning in Sevenoaks

AHU cleaning for businesses, landlords and public buildings in Sevenoaks. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.

  • Coils clogged with dust and debris
  • Leaves and litter drawn into the unit
  • Stale or musty smells from the ventilation

AHU cleaning across Sevenoaks

Sevenoaks: your questions answered

Can you work in Sevenoaks outside opening hours?

Yes, evening, overnight and weekend work is normal for us. The work in Sevenoaks can fit around your hours. Let us know the hours you are closed and we will book within them.

Is Sevenoaks in your area for AHU cleaning?

Yes, Sevenoaks is within the area we cover across London and the South East. A fixed quote normally follows within one working day of the survey details.

What do you do to protect the area?

By covering it before any work starts. The work is kept contained and clean down when we finish.

What’s 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.

Do you work with multi-site operators?

Yes. Send the list of sites and the work at each and you will get one fixed quote.

Do you have a 24/7 line?

Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line, and we will advise on what to do next.

How much does AHU cleaning cost in Sevenoaks?

Size, condition, access and working hours all affect the cost. Ask us for a fixed quote, typically ready within one working day.

How often do AHUs need cleaning?

Under TR19® Air, cleaning is led by inspection and risk rather than a set calendar. Each report suggests when the unit should next be looked at.

AHU cleaning in Sevenoaks

Our AHU cleans for sites in Sevenoaks 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 internal panels, drain trays and filter sections, and common reasons people get in touch are stale or musty smells from the ventilation and dust-coated heating and cooling coils.

For a school, surgery or office in Sevenoaks, cleaning is planned around opening hours: evenings, weekends or school holidays.

Every visit ends with a written report and pictures, so you have a record of what was done and when. Where the work is a TR19® Grease clean, the certificate is issued through the BESCA Vent Hygiene Elite portal.

Where
Sevenoaks (TN13, TN14, TN15, TN8)
Wider area
Kent
Reporting
Report and pictures after the visit
Quote
A fixed quote up front
Hours
Nights, weekends or holidays to suit you
Call
0345 646 2711
Checked
30 October 2026
The Duct Doctor team standing beside their branded white and blue vans

Landlords, agents and facilities managers

Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Where a system serves more than one tenant, such as a shared riser, it helps to agree who arranges the work, and we can quote for the whole system.

We regularly work with managing agents. Send the address, what’s needed and how access works and we’ll come back with a fixed quote.

How we price AHU cleaning

The quote reflects the site in front of us. We consider:

  • When the work can happen, such as evenings, overnight or weekends
  • Whether several sites go on one quote
  • Travel, parking and unloading
  • One-off work versus a regular cycle

Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Call for a fixed quote and we will explain each part.

Helping us quote

What to send for a quote:

  • How we’d reach plant on a roof or in a plant room
  • The site address and the type of premises
  • Any access panels or hatches you can see
  • Your last certificate, test record or report

Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, you get a fixed price before any work starts.

Different parts, different methods

Rooftop and plant room units

Ceiling-mounted and compact units are cleaned too. The space underneath is protected with sheeting first.

Internal casing and panels

Dust settles on every internal surface of the unit. Each section is cleaned from the intake through to the outlet.

Aftercare tips

A little care between visits keeps the system in better shape. We recommend:

  • Report water on the plant room floor
  • File each AHU report in the maintenance log
  • Report musty smells from the vents straight away
  • Diary the inspection date recommended in the report

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.

Regular filter changes are the best protection an AHU has. Once filters clog, dirt starts getting past them.

How it works

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. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. Let us know how to reach the roof or plant area at your site in Sevenoaks, and where the van can go.

  1. First we agree when the unit can be switched off, including evenings or weekends.
  2. Before cleaning, each section is photographed.
  3. We work through the unit from the intake to the outlet.
  4. We finish with the fan section and the drain tray.
  5. We take after pictures and issue the certificate and report.

Before we arrive

  • Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
  • Plan for cooking equipment or plant to be off before we arrive
  • Move anything stored near the system

Get a fixed quote

For AHU cleaning in Sevenoaks, give us a ring on 0345 646 2711 or drop us a line. Let us know the site type and the opening hours, and send photos or your last report if you can. A fixed quote usually follows within one working day.

Get a quick quote

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What a clean will not put right

AHU cleaning can’t fix everything, and we’d rather say so up front. It will not put right:

  • Damaged coils beyond cleaning
  • Controls and BMS settings that run the unit
  • Mechanical faults with motors, belts or bearings

If in doubt, give us a ring on 0345 646 2711 or use the quote form and we will say what we think.

Parts of the system we cover

  • Supply and extract fans
  • Filter sections
  • Internal panels
  • Drain trays
  • Dampers and louvres
  • Heating and cooling coils

Ventilation in Sevenoaks buildings

Food Standards Agency records list about 18 schools, colleges and universities, about 12 hospitals, care homes and childcare premises and about 3 hotels, B&Bs and guest houses registered as food businesses within about 1.5 miles of central Sevenoaks. Busy, occupied buildings like these are where clean supply air matters most. The nearest hospital to Sevenoaks is Sevenoaks Hospital, about 0.6 miles north-east. Clean air matters most where people are unwell, and that’s as true in a care home as in a hospital. Sevenoaks, about 19 miles from central London, is within our usual area. A survey and a fixed quote come first, then the visit at a time that suits you.

For workplaces around Sevenoaks station with mechanical ventilation, cleaning can be done in the evening or at weekends. For schools like Sevenoaks Primary School, the holidays are the usual time to inspect and clean ventilation. Sevenoaks Hospital, about 0.6 miles north-east, is the nearest hospital to Sevenoaks, and healthcare sites of every size need their supply air kept clean.

Sevenoaks is about 19 miles south-east of London, in Kent. We carry out AHU cleaning for commercial premises of every kind in Sevenoaks and the rest of Kent. Across Kent, we cover 922 places, and Sevenoaks is one of them. We also work in Maidstone, around 15 miles away.

Every address in TN13, TN14, TN15 and TN8 is within our area for AHU cleaning, from busy streets to back roads. Streets in the area include London Road, High Street and Church Road, all of which we cover for AHU cleaning. Sevenoaks sits on or near the A21 and A25, which makes travel easy for evening and night visits. Other places close to Sevenoaks include Riverhead (1 mile west), Kippington (1 mile south), Dunton Green (1 mile north-west), Bessels Green (1 mile west) and Chipstead (2 miles west). Larger places within reach include Maidstone (15 miles east), Dartford (11 miles north), Royal Tunbridge Wells (11 miles south), Gravesend (13 miles north-east), Tonbridge (7 miles south-east) and Northfleet (13 miles north-east). As one of the bigger places in Kent, Sevenoaks has commercial sites of every size, all within our area for AHU cleaning.

Near you in Sevenoaks

In Sevenoaks, that means kitchens and buildings near The Rifleman pub, New Beacon School and Knole Academy. Sevenoaks has its own railway station: Sevenoaks station. A little further out are Sevenoaks Hospital (0.6 miles north-east) and Kemsing Castle Bank (2.6 miles north-east). Green spaces nearby include Dryhill Nature Reserve.

Map of Sevenoaks © OpenStreetMap contributors

In-house cleaning or a specialist?

Away from the kitchen, the in-house job is mainly checking: keeping grilles clear, noting unusual noise or smells and logging filter changes. Cleaning inside ducts and units is specialist work.

Staff cleaning and specialist work aren’t the same thing. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but they do not reach the grease that builds up further in. That part needs specialist access and equipment.

BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London