Greater London · Air handling unit cleaning
Air handling unit cleaning in Nash, Greater London
AHU cleaning across Nash and nearby, booked around your opening hours and signed off in writing with photos.
- Units that have only ever had filter changes
- Coils clogged with dust and debris
- Odours coming through the supply air
AHU cleaning around Nash
Food Standards Agency records list about 5 schools, colleges and universities and about 8 hospitals, care homes and childcare premises registered as food businesses within 1.5 miles or so of the middle of Nash. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. For Nash, the closest hospital is Princess Royal University Hospital, roughly 1.8 miles east. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. Many London buildings have had their ductwork altered through several fit-outs, so an inspection comes first.
Wherever a school like Wickham Common Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Nash is about 3 miles south of Bromley, in Greater London. Across the BR2 area, we cover AHU cleaning for commercial sites. Our Greater London coverage runs to 764 places, Nash among them. There’s also a page for London, about 11 miles away.
Work in BR2 follows the same survey, fixed quote and written report as everywhere else we cover. You’ll find streets such as Nash Lane and North Pole Lane, and we cover them all for AHU cleaning. Neighbouring places we cover for AHU cleaning include Keston (1 mile east), Leaves Green (1 mile south-east), Hayes (1 mile north), New Addington (2 miles south-west) and Farthing Street (2 miles south-east). We also work in nearby towns such as London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north).
What’s near Nash
Locally, jobs take us to businesses close to The Greyhound pub, All Saints Catholic School and Coney Hall Recreation Ground. For rail, the closest station is Hayes (Kent) station, about 1.4 miles north of the centre. Well-known places in the area include The Mall (3.2 miles north) and Bethlem Museum of the Mind (1.8 miles north). Not far away are Hutchinson's Bank and Summer Hill.
AHU cleaning in Nash, 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 have filters that are clogged or overdue and fan sections that haven’t been cleaned in years, we can help, from supply and extract fans, heating and cooling coils and dampers and louvres onwards.
Many London buildings have had their ventilation extended and altered through several fit-outs, with old runs left behind that are hard to reach. An inspection first shows where cleaning is needed in a building in Nash.
A written report with pictures follows each visit, so there’s a dated record of the work. Where the work is a TR19® Grease clean, the certificate is issued through the BESCA Vent Hygiene Elite portal.
- Where
- Nash (BR2)
- Region
- Greater London
- Paperwork
- Photo report after each visit
- Quote
- A fixed price before work begins
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Towns and villages near Nash
More services for Nash
Landlords, agents and facilities managers
From a single site to a large estate, the standard is the same: diagnosis, a fixed price, work booked around your hours and a written report with photos.
We also work for facilities teams across offices, schools and healthcare across Greater London. Larger estates can be phased building by building to keep disruption down.
How we price AHU cleaning
You’ll get a fixed price before work begins. It takes into account:
- The condition of the system
- A single visit or a regular plan
- How big the system is
- Site rules, permits and inductions
The cost depends on how big the system is, what state it’s in and access to every part of it. We give you a fixed price before work begins, so there are no surprises.
Helping us quote
Photos let us diagnose from a distance. The most useful are:
- Photos showing the whole system and its surroundings
- The site address and the type of premises
- Your last certificate, test record or report
- The times we could work without disrupting the site
There’s no standard price list, because no two systems are the same. We look at your system first, from pictures or on a visit, and then send you a fixed quote. To start, call 0345 646 2711, or email photos.
Common problems we fix in Nash
Air handling units are normally tucked away on roofs, in plant rooms or above ceilings and are rarely seen by anyone but maintenance staff. Months can pass without anyone looking inside.
It’s time to book a visit if you see:
- Stale or musty smells from the ventilation
- Dirty filters cutting the airflow
- Units needing a clean before a new tenant or handover
- Dirty coils holding back the airflow
Hospitals such as Princess Royal University Hospital (about 1.8 miles east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Nash are no different.
Questions to ask before you book
- Proof of insurance
- Whether the price is fixed
- Whether inaccessible sections are listed on the report
- When the next visit should be, and why
What staff can safely do
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease need training, the right equipment and safe access. That’s our job.
Staff cleaning does not replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but hidden parts of the system still need specialist attention.
What we do, step by step
We are used to working while the site is closed. A lot of visits happen overnight or at weekends, so a kitchen or building can carry on as usual the next day. The visit itself takes from a few hours for a compact unit to a day or more for a large one. Expect the work in Nash to happen after your last customer leaves, not during trading.
- First the unit is surveyed, from pictures or a visit, and the scope agreed.
- We arrange the shutdown with your staff and sheet the area.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- Standing water and slime come out of the tray and the drain is checked.
- We close up the unit and send the certificate and before and after photos.
Getting ready for the visit
- Allow time for equipment near the work to be turned off and cool down
- Arrange a key holder or contact on site
- Dig out any earlier paperwork for the system
Getting a quote
To get a fixed quote, give us a ring on 0345 646 2711 or drop us a line 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. You will usually have a quote within one working day.
Related advice
Part by part
Internal casing and panels
Access doors and panels are opened in turn and closed properly afterwards, and check every one is shut.
Rooftop and plant room units
Rooftop units take the weather, and intakes can collect leaves and debris. We clean the intake and first stage of filters along with the rest.
What a clean won’t put right
We will not sell you work that doesn’t address the problem, so here are the limits:
- Controls and BMS settings that run the unit
- Faulty motors, drives or bearings
- Dirty ducts beyond the unit itself
If in doubt, call us on 0345 646 2711, or send details by email and we’ll say what we think.
What the work covers
- Supply and extract fans
- Dampers and louvres
- Heating and cooling coils
- Filter sections
- Internal panels
- Drain trays
Nash: your questions answered
Does London parking affect a job in Nash?
A loading bay, a visitor permit or off-street space near the site in Nash makes the visit easier to plan. Working overnight, as we often do in London, typically makes it simpler.
Do you do school ventilation cleaning in Nash in the summer holidays?
Yes. Half-terms and the summer break are the natural time for school work. The FSA’s register shows about 5 schools and colleges with food registrations within roughly a mile and a half of Nash. Booking early in the term gives the best choice of holiday dates.
Is there a survey before the work?
Yes, every time. Diagnosis comes before treatment: the survey tells us what the system needs and how to reach it and the fixed quote is built on it.
What do you do to protect the area?
Floors and surfaces near the work are sheeted before any work starts, and anything we remove is contained. At the end, the area is cleaned down.
What information do you need?
The site address, the type of premises and your opening hours, plus photos of the system and your last certificate or report if you have one.
Which parts of an air handling unit do you clean?
Everything inside the unit that air passes over, from the intake and filters through the coils and fan to the outlet. You get a photo report showing each part before and after.
What is TR19?
BESA’s ventilation hygiene specification in two main parts: TR19® Grease for kitchen extracts and TR19® Air for supply and extract systems. It isn’t law, but it’s the benchmark.
Will you repair the fan or motor?
Our AHU work is cleaning rather than mechanical repair. If we spot a fault, we note it in the report for your maintenance team to follow up.