Kent · Air handling unit cleaning
AHU Cleaning in Farningham
Specialist AHU cleaning for Farningham: diagnosis first, then a fixed quote, the work and a report with photos. Call for a fixed quote.
- Dirty filters cutting the airflow
- Odours coming through the supply air
- Plant that needs cleaning after a refit
Your questions about AHU cleaning in Farningham
Can you work in Farningham outside opening hours?
Yes, we can come after you close and finish before you open. It means the site in Farningham keeps running as normal. Tell us your opening hours when you ask for a quote.
Can you do AHU cleaning in Farningham?
Yes, we work in Farningham and the places around it. You can give us a ring on 0345 646 2711, or send details by email and tell us what needs doing.
Will the ventilation be off while you clean?
Yes, while the clean is under way. We can work evenings, overnight or at weekends so the building is not left without ventilation when it’s busy.
What information do you need?
Some pictures and a quick description of the system, with the address and opening hours. We will ask for anything else we need.
Can you quote from pictures?
Typically, 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 pictures aren’t enough, we will survey first.
Can one contract cover all our sites?
Yes. One number covers all your sites across London and the South East, and visits can be set on a regular cycle.
Are you fully insured?
Yes. We are fully insured, and the details are available on request.
Do you look at the system first?
Yes, every time. We diagnose before we treat: the survey tells us what the system needs and how to reach it and the fixed quote is built on it.
About our AHU cleaning in Farningham
Where a building in Farningham has had little more than filter changes, the coils, fan and casing can be carrying far more dirt than anyone has seen. A full AHU clean takes in the whole unit. Typical jobs include dirty coils holding back the airflow and intake sections clogged with outdoor debris, across dampers and louvres, supply and extract fans and drain trays.
Work in a small place like Farningham starts with agreeing access and timings, and the ventilation is inspected, cleaned and recorded the same as anywhere.
It’s worth checking any contractor’s accreditations. Ours are BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001, and we’re fully insured.
- Place
- Farningham (DA4)
- Wider area
- Kent
- Records
- Report and photos after the visit
- Price
- A fixed quote up front
- Working hours
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Nearby places to Farningham
Other services in Farningham
What happens on the day
The first job on site is protection: sheeting goes over floors and surfaces close to the work. Then we make the system safe and start. It takes half a day to a full day per unit, with large plant planned over several shifts, and we clear up before we go. Rural roads and tight entrances are worth telling us about before a visit to Farningham.
- The survey covers the unit, its access and how it can be shut down.
- The area is protected and the unit made safe.
- 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.
Getting ready for the visit
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Clear the space around the work
- Mention any sign-in, permit or induction we need
Getting a quote
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.
Related advice
Landlords, agents and facilities managers
We work for landlords, managing agents and facilities managers as well as the people running the site. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we are happy to quote for all of it.
When the building owner and the occupier are different, it’s worth checking the lease for who maintains the systems. We are happy to deal with either side and send the paperwork to whoever needs it.
When to call us in Farningham
Filters catch most of the dust, but not all of it. What gets through settles on coils, fans and the inside of the casing, a little more each month.
Most sites get in touch after spotting one of these:
- Air handling units with blocked filters
- Units needing a clean before a new tenant or handover
- Fan sections that haven’t been cleaned in years
- Coils clogged with dust and debris
Darenth Park Hospital, about 4.2 miles north, is the nearest hospital to Farningham, and healthcare sites of every size need their supply air kept clean.
What to look for in a quote
- Whether VAT is included
- When they can work, and whether that’s outside your opening hours
- What records you will receive afterwards
- Proof of insurance
What AHU cleaning looks like in Farningham
We cover Farningham, about 16 miles from central London, as part of our work across London and the South East. A survey and a fixed quote come first, then the visit at a time that suits you. The nearest hospital to Farningham is Darenth Park Hospital, about 4.2 miles north. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
Wherever a school like The Anthony Roper Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Farningham is about 5 miles south of Dartford, in Kent. From the centre of Farningham to the outskirts, AHU cleaning is available to all kinds of commercial premises, from small sites to large estates. 922 places in Kent are on our list, large and small. Maidstone is in our area too, around 15 miles away.
Postcode districts we cover here for AHU cleaning: DA4. You’ll find streets such as High Street, London Road and South Hall Close, all of which we cover for AHU cleaning. We also cover the places around Farningham: Eynsford (1 mile south-west), Horton Kirby (1 mile north-east), Maplescombe (2 miles south-east), Speed Gate (2 miles east) and Fawkham Green (3 miles east). Within a short drive, we also cover Maidstone (15 miles south-east), Dartford (5 miles north), Sevenoaks (7 miles south), Gravesend (8 miles north-east), Tonbridge (13 miles south) and Northfleet (7 miles north-east).
Around Farningham
Typical jobs here are in premises near Pied Bull pub. The closest station to Farningham is Eynsford station, roughly 1.4 miles south-west of the centre. A little further out are Eynsford Castle (0.7 miles south-west) and Darenth Park Hospital (4.2 miles north). The countryside around Farningham includes The Warren.
What AHU cleaning can’t fix
It’s worth knowing the limits before booking:
- Breakdowns that need a mechanical engineer
- A system that is undersized for the building
- Ductwork downstream of the unit, which is a separate clean
If in doubt, call us on 0345 646 2711 or email us and we will say what we think.
Where we work
- Filter sections
- Drain trays
- Supply and extract fans
- Internal panels
- Dampers and louvres
- Heating and cooling coils
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.
Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they can’t safely do is clean inside the ductwork, the fan or the risers, and that’s where we come in.
What affects the cost of AHU cleaning
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Where the site is and how we reach it
- Site requirements such as sign-in and permits
- How easy every part is to reach
- Whether several sites go on one quote
Whatever the type of site, the quote works the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we will go through it with you.
What we need to know
You don’t need the technical terms. It helps if you can send:
- The roof, plant room or outside wall the system runs to
- Problems your staff have spotted
- Wide photos of the system and the area around it
- Detail shots of panels, filters and grilles
Every quote begins with a look at the system, from your photos and details or, where that isn’t enough, a survey on site. Then we send a fixed price so you know the cost before any work starts.
Between visits
To keep the system working properly between visits:
- Make sure the unit’s access doors open easily
- Do not ignore odours coming through the grilles
- Change filters on schedule and log each change
- Do not store bins or materials near the intake
Stick to the filter change schedule, because good filters protect everything downstream. Record each change in the maintenance log.
Keep the unit’s doors and panels in working order. If a section is hard to get into, it tends not to get checked.