Greater London · Air handling unit cleaning
Barnehurst AHU cleaning
Specialist AHU cleaning for Barnehurst: diagnosis first, then a fixed quote, the work and a report with pictures. Ask us for a fixed quote.
- Drain trays holding standing water
- Air handling units due a clean after building work
- Fan sections that haven’t been cleaned in years
AHU cleaning in Barnehurst, done properly
Drain trays under cooling coils are meant to empty. If the outlet blocks, standing water and slime build up, right in the path of the air going into the building. Clearing and cleaning the tray is central to every AHU clean. If you are dealing with units that have only ever had filter changes and air handling units with blocked filters, we can help.
Across London, offices, hotels, schools and healthcare buildings rely on mechanical ventilation, much of it supplied through air handling units on roofs or in basements. For a building in Barnehurst, dust settles in the units and ducts year after year.
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 are fully insured.
- Place
- Barnehurst (DA7, DA1, DA8)
- Wider area
- Greater London
- Reporting
- Report and pictures after the visit
- Quote
- Fixed quote, typically within a working day
- Hours
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
In-house cleaning or 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 is where we come in.
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but hidden parts of the system still need specialist attention.
Part by part
Drain trays
Condensate from the coil drips into a tray beneath it. Standing water and slime are removed and the outlet is checked.
Heating and cooling coils
Heating and cooling coils have tightly packed fins that trap fine dust. We clean them with care so the fins are not damaged.
Barnehurst buildings and their air
Going by the FSA’s register, there are about 28 schools, colleges and universities, about 52 caring premises (care homes, nurseries and hospitals) and about 4 hotels and B&Bs serving food within about 1.5 miles of central Barnehurst. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Ventilation cleaning in London buildings is usually planned for evenings or weekends. For Barnehurst, the closest hospital is Erith and District Hospital, roughly 1.1 miles north. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
If you manage a school such as Mayplace Primary School, ventilation cleaning is best booked for the holidays. If you run a surgery, dental practice or care home near Barnehurst, clean ventilation matters as much to you as to a hospital like Erith and District Hospital (about 1.1 miles north). Workplaces around Barnehurst station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts.
Barnehurst is about 3 miles east of Welling, in Greater London. Whatever kind of site you run in Barnehurst, AHU cleaning is something we can help with. We can work out of hours so trading isn’t interrupted. Across Greater London, we cover 764 places, and Barnehurst is one of them. We also work in London, about 12 miles from Barnehurst.
We work across DA7, DA1 and DA8 for AHU cleaning and the streets around it. Streets in the area include Old Road, Grove Road and Manor Road, and we cover them all for AHU cleaning. Barnehurst is on the A2000, so it’s easy for us to get to for out-of-hours visits. Neighbouring places we cover for AHU cleaning include Bexley Riverside (1 mile north), Northumberland Heath (1 mile north), Crayford (1 mile south-east), North End (1 mile east) and Barnes Cray (1 mile east). Within a short drive, we also cover London (12 miles west), City of Westminster (14 miles west), Marylebone (14 miles west), St Pancras (13 miles west), Shoreditch (12 miles north-west) and Walthamstow (12 miles north-west).
What’s near Barnehurst
In Barnehurst, that means kitchens and buildings near St Catherine's Catholic School, St Catherine's Catholic School and Braeburn Park, among other places. For rail, the closest station is Barnehurst station, about 0.5 miles north-west of the centre. Well-known places in the area include Stone Castle (4.8 miles east) and Bexley Museum (1 mile south). Not far away are Wansunt Pit.
Landlords, agents and facilities managers
Where a tenant occupies the premises but the landlord owns the building, the lease normally sets out who maintains what. We can quote either party and send the paperwork to whoever needs it.
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements and we’ll come back with a fixed quote.
FAQs for Barnehurst
Can the work in Barnehurst be done at night or at weekends?
Yes, out-of-hours work is a big part of what we do. The site is handed back ready to open. Just call us on 0345 646 2711 or send us an email with your opening times and we will plan around them.
Is parking a problem for work in Barnehurst?
We plan it in advance, so let us know about loading bays, permits and access rules at the building. If the building has a loading slot system, we will book into it.
How much notice do you need?
Earlier is better, particularly for night and weekend visits. Quotes typically come back within one working day, and there’s a 24/7 line for emergencies.
What happens to the waste?
Waste is contained during the work and removed when we leave, including grease, debris and dirty water. None of it is left on site.
Can you fix a faulty AHU?
Our AHU work is cleaning rather than mechanical repair. Any faults we notice are recorded for your maintenance team to follow up.
Will the ventilation be off while you clean?
Yes, for the time we’re working on it. Out-of-hours work is available so the building isn’t left without ventilation when it’s busy.
Which parts of an air handling unit do you clean?
All the internal parts the air touches, from intake to discharge, including coils, fan and drain trays. You get a photo report showing each part before and after.
What’s TR19?
BESA’s ventilation hygiene specification, with two parts that matter most here: TR19® Grease for kitchen extracts and TR19® Air for supply and extract systems. It isn’t law, but it’s the benchmark.
Keeping the system healthy
To keep the system working properly between visits:
- Diary the inspection date recommended in the report
- Do not store bins or materials near the intake
- Watch for drips or damp patches near the plant
- File each AHU report in the maintenance log
The report suggests a date for the next inspection or clean, based on what we found. Under TR19® Air the timing is set by inspection and risk, not a fixed calendar.
Make sure access doors and panels on the unit open easily. Sections that are awkward to open are the ones that get skipped.
What we do, step by step
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 anything from half a day for one small unit to several shifts for a plant room full of them, and the area is cleaned down before we leave. Night and weekend working is normal for us in London, and a site in Barnehurst is no exception.
- We start with a survey of the unit and a fixed quote for the work.
- The unit is shut down with your site team and the area protected.
- 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.
Before we arrive
- Let us know how we reach the system, including roofs, risers and plant rooms
- Let us know about permits to work or site inductions
- Arrange a key holder or contact on site
How to get a quote
For a fixed quote, ring 0345 646 2711 or use the quote form with the site type, your trading hours and a short description of the system. Photos and the last report, if you have one, make the quote quicker. We typically come back within one working day.
Advice
Why act early in Barnehurst
A clean unit feeds cleaner air into the ductwork, so the whole system stays cleaner for longer. It also means the next inspection has less to find. In Barnehurst, a planned overnight visit is much easier than closing unexpectedly.
Working hours, access and the scale of the site can all change the price. Each of those is built into the quote, and the price is fixed before we start.
Why Barnehurst businesses choose us
- A fixed price before any work starts
- Work around your opening hours, with 24/7 emergency cover
- In business since 2009
- One number for every site across the South East and London
Read our cost guide or our accreditations.
Also near Barnehurst
Also in Barnehurst
How we price AHU cleaning
Every site gets its own quote. This is what makes a difference:
- Whether we need access equipment or extra panels
- Whether it’s a one-off visit or part of a schedule
- Site requirements such as sign-in and permits
- When the work can happen, such as evenings, overnight or weekends
What you pay reflects the actual work. That’s why we survey first, from pictures or on site, and the price is agreed before we start.
What we need to know
To help us quote quickly, send us:
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Your opening hours and when the area is out of use
- Your last certificate, test record or report
- The postcode and the type of business
Here’s what helps us quote: where the site is, what it is and its opening hours, a few photos and the last certificate or report, if there is one. Then phone us on 0345 646 2711, or send details by email.