Kent · Air handling unit cleaning
Otford AHU cleaning
AHU cleaning in Otford from ventilation hygiene specialists trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Dirty coils holding back the airflow
- Fan sections that haven’t been cleaned in years
- Plant that needs cleaning after a refit
AHU cleaning in Otford
Think of an AHU clean as a full check-up for the ventilation. We look inside each section, clean what we find and record it with pictures, so the report shows exactly what was done. The work covers internal panels, supply and extract fans and heating and cooling coils, and common reasons people get in touch are leaves and litter drawn into the unit and air handling units due a clean after building work.
In a smaller place like Otford, buildings with ducted ventilation are more likely to be a school, a surgery, a care home or a small business unit than an office block. Even a small system collects dust in its ducts and filters.
We’ve been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Place
- Otford (TN14)
- Region
- Kent
- Paperwork
- Photo report after each visit
- Price
- A fixed quote up front
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Checked
- 30 October 2026
How it works
Everything the job needs comes with us, from protective sheeting to tools and access equipment. All we need from you is clear access and the right equipment switched off. On site, the work takes a single shift for a typical unit, longer for large or heavily soiled ones. Your opening hours decide when we come to Otford, not ours.
- We look at the unit and the plant area during the survey.
- The area is protected and the unit made safe.
- Dirt and debris are removed from each section.
- We clean the coils and clear the tray and drain.
- We close every panel, hand the unit back and send the report and certificate.
Preparing for the visit
- Let us know when the site is closed or quiet
- Clear the space around the work
- Let us know about parking and loading
How to get a quote
Getting a quote does not take long. Call or email with a few details and you’ll usually have a fixed price within one working day. Where a survey is needed, we arrange a time that suits the site.
Advice
Between visits
Think of this as the after-treatment advice, short and simple:
- Watch for drips or damp patches near the plant
- Keep inspection doors on the unit in good order
- Stick to the filter change plan
- Check the drain tray is emptying during routine visits
Keep filter changes on schedule between cleans, 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.
Don’t let leaves, litter or stored materials build up near the fresh air intake. Anything around the intake is likely to be drawn in.
Leave it or put it right?
A clogged coil or dirty fan makes the unit work harder for the same airflow. The result is extra wear and a building that does not feel as comfortable, and a clean on your terms beats a breakdown on nobody’s. In a smaller place like Otford, a site that has to close is felt quickly.
A single site or a whole portfolio, the quote is built the same way: the work involved, the access and the timing. You’ll have a fixed price before work begins.
Why us?
- Evenings, overnight and weekends, plus 24/7 emergency callout
- Fully insured
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
- CHAS and SafeContractor accredited, with ISO 9001
See our cost guide or our accreditations.
Otford buildings and their air
There are about 11 schools, colleges and universities and about 4 care, childcare and hospital premises on the FSA’s food hygiene register within about 1.5 miles of central Otford. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Otford’s nearest hospital, Sevenoaks Hospital, is about 1.6 miles south. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. We cover Otford, about 18 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.
For schools like Otford Primary School, the holidays are the usual time to inspect and clean ventilation. Workplaces around Otford station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts. Healthcare ventilation, from large hospitals like Sevenoaks Hospital (about 1.6 miles south) to small clinics, depends on clean filters, coils and ducts.
Otford is about 2 miles north of Sevenoaks, in Kent. Otford gets the same approach as every site we work on: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with pictures. Otford is one of 922 towns, villages and districts in Kent where we work for AHU cleaning. For sites nearby, see our Maidstone page (15 miles or so).
Postcode districts we cover here for AHU cleaning: TN14. AHU cleaning is available to premises on Station Road, High Street and Bubblestone Road and the roads around them. We also cover the places around Otford: Twitton (1 mile west), Shoreham (2 miles north), Sepham Heath (2 miles north-west), Halstead (3 miles north-west) and Badgers Mount (3 miles north-west). We also work in nearby towns such as Maidstone (15 miles east), Dartford (9 miles north), Royal Tunbridge Wells (13 miles south), Gravesend (12 miles north-east), Tonbridge (9 miles south-east) and Northfleet (11 miles north-east).
Local landmarks in Otford
Locally, jobs take us to businesses close to Knole Academy, The Woodman pub and Fackenden Down, among other places. Otford has its own railway station: Otford station. Well-known places in the area include Kemsing Castle Bank (1.7 miles east) and Otford Heritage Centre (under half a mile south-east). Green spaces nearby include Dryhill Nature Reserve.
Questions from Otford
Do you do school ventilation cleaning in Otford in the summer holidays?
Yes, out-of-term visits are normal for schools. There are about 11 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Otford. Send us your term dates when you ring 0345 646 2711 or drop us a line, and we will fit the work in.
Can the work in Otford be done at night or at weekends?
Yes, evening, overnight and weekend work is normal for us. The work in Otford can fit around your hours. Just give us a ring on 0345 646 2711 or use the quote form with your opening times and we’ll plan around them.
Will we get paperwork for the AHU clean?
Yes. Every clean comes with a TR19® certificate and a photo report. They’re worth keeping with the plant records.
What do you clean inside the unit?
Every section that collects dirt: filters, coils, tray, fan and panels. The survey confirms what’s in your unit before we quote.
How long does an AHU clean take?
Cleaning takes half a day to a full day per unit, with large plant planned over several shifts. Large plant can be split over several shifts, and you can call 0345 646 2711, or send details by email to plan it.
Can you fix a faulty AHU?
Motors, belts, controls and coils that need repair are a job for your maintenance contractor. We’ll flag anything we notice during the clean.
What’s TR19?
It’s BESA’s specification and the benchmark insurers, fire officers and EHOs look to. It sets out inspection, cleaning and record keeping and expects a risk-based approach.
Can you quote from pictures?
Normally, yes. Send wide shots, close-ups of any access panels and anything that worries you, and we typically come back within one working day. If photos aren’t enough, we’ll survey first.
How the job changes from site to site
Rooftop and plant room units
Units outside are exposed to weather and windblown debris. We clean the intake and first stage of filters along with the rest.
Fans and fan sections
Before the fan is touched, the unit is shut down and made safe in agreement with the site.
How we price AHU cleaning
The survey tells us what the work involves. The main factors are:
- Whether several sites go on one quote
- When the work can happen, such as evenings, overnight or weekends
- Site rules, permits and inductions
- Parking and loading at the site
Leaving it longer rarely makes the work cheaper. Problems in a system tend to grow, which can make the next visit longer. If you’re not sure what’s needed, ring 0345 646 2711 or drop us a line for straight advice and a fixed quote.
What to send for a quote
There’s no need for technical detail. It helps if you can send:
- The roof, plant room or outside wall the system runs to
- Where the site is and what kind of site it is
- Close-ups of filters, grilles, hatches or access panels
- The times we could work without disrupting the site
There’s no standard price list, because every site is different. Instead, we look at your site first, from pictures or a survey, then send a fixed quote. To get going, call 0345 646 2711 or drop us a line.
Towns and villages near Otford
What else we do in Otford
Staff cleaning versus specialist work
Good housekeeping makes our visits easier, not unnecessary. Clean filters and tidy surfaces slow the build-up, but hidden parts of the system still need specialist attention.
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. What they can’t safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
Managing agents and facilities teams in Otford
Facilities teams in offices, schools and healthcare sites book us too across Kent. Larger estates can be phased building by building to keep disruption down.
Where a tenant occupies the premises but the landlord owns the building, the lease normally sets out who maintains what. We are happy to deal with either side, and the report can go to both.