Greater London · Air handling unit cleaning
Air handling unit cleaning in Mugswell, Greater London
AHU cleaning in Mugswell from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Odours coming through the supply air
- Fan sections that haven’t been cleaned in years
- Coils clogged with dust and debris
What the work involves, part by part
Heating and cooling coils
Coil fins are close together and catch the dust the filters miss. We clean them with care so the fins are not damaged.
Filters
Every AHU relies on its filters to catch dust before it reaches the coils. As part of the clean, filters are checked and cleaned or replaced as agreed, and the housing around them is cleaned too.
About our AHU cleaning in Mugswell
Coils are where a lot of the dirt ends up. Dirt on the fins holds back air and makes the unit work harder to do the same job. We clean coils with methods suited to their condition, taking care not to damage the fins. Common call-outs are for condensate trays that won’t empty and filters that are clogged or overdue, across supply and extract fans, filter sections and drain trays.
London offices and flats often have ductwork added through successive refits, leaving sections that are hard to reach and seldom cleaned. In Mugswell, as elsewhere, cleaning starts with an inspection of what’s there.
Each visit ends with a written report and pictures, so you have a record of what was done and when. Where the work is a TR19® Grease clean, the certificate is issued through the BESCA Vent Hygiene Elite portal.
- Where
- Mugswell (CR5)
- Wider area
- Greater London
- Reporting
- Report and photos after the visit
- Price
- Fixed quote, typically within a working day
- When we work
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What happens if it’s left?
Tenants, auditors and owners may want proof that the air handling plant is kept clean. Our certificate and photo report give you clear evidence, for audits, tenants or your own peace of mind. In a London building, a problem in a duct, damper or fan rarely stays in one unit.
No two sites are the same, so we price each one individually. Size, access, the condition of the system and when we can work all play a part.
Why Mugswell businesses choose us
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- CHAS and SafeContractor accredited, with ISO 9001
- A written report with pictures after each visit
- Full insurance on every job
FAQs for Mugswell
Do you cover Mugswell for AHU cleaning?
Yes. Our area runs across London and the South East, Mugswell included. Get in touch with the details and we will arrange a survey.
Can you come to Mugswell after we close?
Yes, evening, overnight and weekend work is normal for us. Your customers, staff or residents in Mugswell needn’t be disturbed. Let us know the hours you are closed and we will book within them.
Can you come out in an emergency?
Yes. There’s a 24/7 emergency line for anything that cannot wait until a planned visit. Ring any time and tell us what’s happened.
Do you give a certificate after the clean?
Yes, both a certificate and a report with pictures. It includes a recommended date for the next check.
Can one contract cover all our sites?
Yes. Our area covers London and the South East, so we can schedule a run of sites on one programme. Every site has its own report.
How often do AHUs need cleaning?
There’s no single answer; it comes down to the building and the unit. Inspection tells you when cleaning is needed, and we will suggest an interval after the first clean.
Will the ventilation be off while you clean?
Yes. We cannot clean a running unit, so it’s switched off and made safe first. We agree the timing with your site team.
What’s TR19?
TR19® is BESA’s specification for ventilation hygiene. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.
When to call us in Mugswell
Air handling units are typically tucked away on roofs, in plant rooms or above ceilings and are rarely seen by anyone but maintenance staff. It’s easy for a long time to go by without anyone opening the panels.
Common reasons sites call us are:
- Dust-coated heating and cooling coils
- Plant that needs cleaning after a refit
- Condensate trays that won’t empty
- Leaves and litter drawn into the unit
School buildings such as Kingswood Primary School are usually done in the holidays, so classrooms aren’t disturbed.
Before booking anyone
- Whether VAT is included
- Which accreditations they hold, and whether you can check them
- How areas they can’t reach will be recorded
- Exactly which parts of the system are covered
Managing agents and facilities teams in Mugswell
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements and we will come back with a fixed quote.
Whether it’s one building or many, you get the same standard: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
Honest limits
We will not sell you work that does not address the problem, so here are the limits:
- Leaking heating or cooling coils
- Airflow problems caused by the system’s design
- Mechanical faults with motors, belts or bearings
Not sure which it is? You can call 0345 646 2711 or drop us a line and we will tell you honestly before booking.
Parts of the system we cover
- Supply and extract fans
- Dampers and louvres
- Heating and cooling coils
- Filter sections
- Internal panels
- Drain trays
Ventilation in Mugswell buildings
Food Standards Agency data includes about 3 hospitals, care homes and childcare premises within 1.5 miles or so of the middle of Mugswell. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. The nearest hospital to Mugswell is Headley Court, about 3.6 miles west. Clean air matters most where people are unwell, and that is as true in a care home as in a hospital. Getting kit to a London plant room usually means lifts, stairs and an agreed loading slot.
Healthcare ventilation, from large hospitals like Headley Court (about 3.6 miles west) to small clinics, depends on clean filters, coils and ducts.
Mugswell is about 3 miles north of Reigate, in Greater London. From the centre of Mugswell to the outskirts, AHU cleaning is available to all kinds of commercial premises, from a single unit to a large public building. Mugswell is one of 764 places in Greater London we cover for commercial clients. We also work in London, around 16 miles away.
All of CR5 is within our area for AHU cleaning, from busy streets to back roads. Nearby, we also carry out AHU cleaning in Gatton (1 mile south-east), Hooley (2 miles north-east), Merstham (2 miles east), South Merstham (2 miles south-east) and Netherne on-the-Hill (3 miles north-east). Larger places within reach include Kensington (15 miles north), Brompton (15 miles north), Stockwell (14 miles north), Orpington (15 miles north-east), Wimbledon (10 miles north) and Kennington (14 miles north).
Near you in Mugswell
Typical jobs here are in premises near Eyhurst Park, Well House Inn and St Bede's School, among other places. Mugswell’s nearest station is Kingswood station, roughly 1.3 miles north-west of the centre. A little further out are Surrey Fire Museum (2.4 miles south) and The Belfry (2.9 miles south-east). For a walk, there’s Reigate Heath and Colley Hill.
Places near Mugswell
More services for Mugswell
What your team can do, and what needs us
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. What they cannot safely do is clean inside the ductwork, the fan or the risers, and that’s where we come in.
Logging matters as much as cleaning. A dated log of in-house cleaning and checks shows an inspector that the system is looked after between visits, alongside our reports.
How the visit works
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, while signing off means the written report and pictures. Most of the time goes on the work itself, and that takes a single shift for a typical unit, longer for large or heavily soiled ones. Night and weekend working is normal for us in London, and a site in Mugswell is no exception.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Dirt and debris are removed from each section.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
Before we arrive
- Allow time for equipment near the work to be turned off and cool down
- Have your last certificate or report to hand
- Arrange a key holder or contact on site
How to get a quote
Need a price for AHU cleaning? Please give us a ring on 0345 646 2711 or email us with a few details about the site. We will explain what we’d do and send a fixed quote before you commit to anything.