Greater London · Air handling unit cleaning
AHU Cleaning in Roundshaw
One call covers cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Roundshaw, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Air handling units due a clean after building work
- Odours coming through the supply air
- Intake sections clogged with outdoor debris
What happens on the day
There are three stages on the day: getting the area ready, doing the work and signing it off. Set-up means sheeting and making equipment safe, and the sign-off is a written report with pictures. The middle part takes longest, and that takes one overnight shift for many single units, with bigger plant phased. In Roundshaw, as across London, we typically work overnight or at weekends and hand the site back ready to open.
- We agree a shutdown window that suits the building.
- We take before pictures of each section of the unit.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- After pictures are taken and the certificate issued.
Getting ready for the visit
- Let us know how we reach the system, including roofs, risers and plant rooms
- Allow time for equipment near the work to be turned off and cool down
- Agree a time when the area can be out of use
How to get a quote
We do not publish a price list, because every site is different. Instead, we look at your site first, from photos or a survey, then send a fixed quote. To start, ring 0345 646 2711 or email us.
Advice
AHU cleaning in Roundshaw, done properly
Drain trays under cooling coils are meant to empty. If the outlet blocks, standing water and slime build up, in the airstream that feeds the building. Clearing and cleaning the tray is central to every AHU clean. Common call-outs are for plant that has been serviced but not cleaned and debris and leaves in the fresh air intake, on filter sections, internal panels and dampers and louvres.
London buildings tend to keep their plant on the roof or below ground, so work in Roundshaw is often done in the evening or at weekends. Parking and loading are agreed with the building in advance.
Nothing is signed off by word of mouth: a dated report with photos of the work, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. Any parts we couldn’t reach are recorded on it too.
- Where
- Roundshaw (SM6, CR8, CR0)
- Wider area
- Greater London
- Reporting
- Report and pictures after the visit
- Price
- Fixed quote, typically within a working day
- Hours
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
How the job changes from site to site
Internal casing and panels
Loose or damaged linings inside a unit can break up into the airstream. We note any we find in the report.
Drain trays
Older trays can corrode and start leaking. We record their condition with pictures so you can decide on any repairs.
In-house cleaning or a specialist?
Day-to-day cleaning is something your team can do: 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, and that is where we come in.
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. That is our job.
Ventilation in Roundshaw buildings
Food Standards Agency data includes about 35 schools, colleges and universities, about 93 care, childcare and hospital premises and about 6 hotels and B&Bs in and around Roundshaw, up to about a mile and a half out. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. Purley War Memorial Hospital is the nearest hospital, about 1.2 miles south-east of Roundshaw. 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.
If you run a surgery, dental practice or care home near Roundshaw, clean ventilation matters as much to you as to a hospital like Purley War Memorial Hospital (about 1.2 miles south-east). If you manage a school such as Wallington Primary Academy, ventilation cleaning is best booked for the holidays.
Roundshaw is about 2 miles south-west of Croydon, in Greater London. Whether your site is in the middle of Roundshaw or further out, we cover AHU cleaning for every kind of premises, from small sites to large estates. 764 places in Greater London are on our list, from busy centres to quieter spots. We also work in London, about 10 miles from Roundshaw.
Work in SM6, CR8 and CR0 is surveyed, quoted and booked the same way as anywhere else. If you need AHU cleaning at premises on Link Lane, Milton Road and Redwing Road or a nearby road, our technicians can take on the work. Nearby, we also carry out AHU cleaning in Russell Hill (1 mile east), Bandonhill (1 mile north), Peaks Hill (1 mile south), Waddon (1 mile north-east) and Wallington (1 mile north-west). Within a short drive, we also cover London (10 miles north), City of Westminster (11 miles north), Marylebone (11 miles north), Kensington (11 miles north), St Pancras (12 miles north) and Shoreditch (12 miles north).
Around Roundshaw
We work in commercial kitchens and buildings around Wilson's School, Waddon Ponds and The John Fisher School and the streets around them. For rail, the closest station is Wallington station, roughly 0.9 miles north-west. Well-known places in the area include Purley War Memorial Hospital (1.2 miles south-east) and Croydon Airport Visitor Centre (0.6 miles east). Not far away are Roundshaw Downs and Duppas Hill.
Do you need AHU cleaning in Roundshaw?
No filter stops everything. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
Clients typically contact us when they notice something like this:
- Units that have only ever had filter changes
- Leaves and litter drawn into the unit
- Fan sections that haven’t been cleaned in years
- Units needing a clean before a new tenant or handover
Workplaces around Wallington station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts.
What your quote should include
- Which accreditations they hold, and whether you can check them
- How VAT is shown on the quote
- When the next visit should be, and why
- Whether inaccessible sections are listed on the report
When something else is needed
It’s worth knowing the limits before booking:
- Coils that are corroded or leaking and need replacing
- Airflow problems caused by the system’s design
- Faulty motors, drives or bearings
If you’re not sure, just phone us on 0345 646 2711 or email us and we’ll give you a straight answer before you book.
What we work on in Roundshaw
- Drain trays
- Dampers and louvres
- Filter sections
- Heating and cooling coils
- Internal panels
- Supply and extract fans
Questions from Roundshaw
Can ventilation in schools around Roundshaw be cleaned out of term?
Yes, holiday work suits schools best. With about 35 schools and colleges on the FSA’s register within roughly a mile and a half of Roundshaw, it pays to plan holiday dates ahead. Just call 0345 646 2711 or use the quote form with your term dates and we’ll plan around them.
Can the work in Roundshaw be done at night or at weekends?
Yes, we can come after you close and finish before you open. The site is handed back ready to open. Let us know the hours you are closed and we’ll book within them.
How much notice should we give?
The more notice, the better, particularly for night and weekend visits. Quotes usually come back within one working day, and emergencies are covered by our 24/7 line.
How long will the unit be out of action?
As a guide, it takes one overnight shift for many single units, with bigger plant phased. The shutdown is planned to fit, including evenings or weekends.
Do you survey before quoting?
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.
Do you have a 24/7 line?
Yes, 24/7. Office hours are Monday to Friday, 8am to 6pm, with the emergency line covering every other hour.
When should our AHU next be cleaned?
That’s set by inspection, in line with TR19® Air. A hard-working unit, or one serving a hospital or care home, may need cleaning more often.
What information do you need?
A short description and a few pictures plus the address and your hours. We will ask for anything else we need.
Looking after it afterwards
No system stays clean for ever, but care slows the build-up. Our tips:
- Clear leaves and litter away from the intake
- Check the drain tray is emptying during routine visits
- Plan the next inspection before the last report gets filed away
- Keep the certificate and photo report with the plant records
Once the clean is done, we send a TR19® certificate and a report with before and after pictures. They belong in the plant or maintenance log.
Have the unit inspected regularly, in line with the risk-based approach of TR19® Air instead of leaving it to guesswork.
Nearby places to Roundshaw
Also in Roundshaw
Managing agents and facilities teams in Roundshaw
Where a tenant occupies the premises but the landlord owns the building, it’s worth checking the lease for who maintains the systems. We’re happy to deal with either side, and the report can go to both.
Running several sites is easier with one contractor. We cover South East England and London, so visits at different addresses can be planned together and kept to a regular schedule.