Greater London · Air handling unit cleaning
AHU Cleaning in Mortlake
One call covers cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Mortlake, from survey to sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Dirty filters cutting the airflow
- Plant that has been serviced but not cleaned
- Condensate trays that won’t empty
AHU cleaning in Mortlake, done properly
Think of an AHU clean as a full check-up for the ventilation. We look inside each section, clean what we find and record it with photos, so the report shows exactly what was done. If you are dealing with filters that are clogged or overdue and drain trays holding standing water, we can put it right, from dampers and louvres, filter sections and drain trays 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. In Mortlake, as elsewhere, cleaning starts with an inspection of what’s there.
We’re CHAS and SafeContractor accredited, we hold ISO 9001 and we are fully insured. On top of that, we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Location
- Mortlake (SW14, SW13, SW15)
- Region
- Greater London
- Paperwork
- Photo report after every visit
- Quotes
- A fixed quote up front
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
The process
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. The work on site takes from a few hours for a compact unit to a day or more for a large one, and we clear up before we go. Getting kit into a London building takes planning, so let us know where we can load and park in Mortlake.
- First we agree when the unit can be switched off, including evenings or weekends.
- Before cleaning, each section is photographed.
- We work through the unit from the intake to the outlet.
- We finish with the fan section and the drain tray.
- After photos are taken and the certificate issued.
Preparing for the visit
- Tell us the best time to work, such as after service or at a weekend
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Allow time for equipment near the work to be turned off and cool down
Get a fixed quote
If you need AHU cleaning in Mortlake, call us on 0345 646 2711 or use the quote form. Tell us what kind of premises it is and when it’s open, and send photos or your last report if you can. We normally send a fixed quote within one working day.
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What the work involves, part by part
Filters
Filters are the first line of defence in the unit. As part of the clean, filters are checked and cleaned or replaced as agreed, and the housing around them is cleaned too.
Fans and fan sections
The fan moves all of the unit’s air, so dirt on it gets spread around. The impeller, its housing and the fan chamber are cleaned.
Do you need AHU cleaning in Mortlake?
It matters for two reasons: the unit supplies the air people breathe, and a dirty unit has to work harder. For the people using the building every day, that’s the air they breathe for hours on end.
If you notice any of these, it’s worth a diagnosis:
- Air handling units never cleaned inside
- Stale or musty smells from the ventilation
- Blocked condensate drains and slimy trays
- Fan sections that haven’t been cleaned in years
Workplaces around Mortlake station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts.
What to look for in a quote
- Whether the quote shows VAT
- Whether the work can be done while the site is closed
- Whether they’re fully insured
- If the quote is a fixed price or an estimate
What a clean will not put right
Some problems need a different service or another trade:
- Ventilation that was badly designed in the first place
- Building management system faults
- Damaged coils beyond cleaning
Not sure which it is? You can call us on 0345 646 2711 or drop us a line and we’ll tell you honestly.
What the work covers
- Supply and extract fans
- Heating and cooling coils
- Internal panels
- Drain trays
- Filter sections
- Dampers and louvres
Common questions in Mortlake
Can the work in Mortlake be done at night or at weekends?
Yes, out-of-hours work is a big part of what we do. Your customers, staff or residents in Mortlake needn’t be disturbed. Tell us your opening hours when you ask for a quote.
Do you clean school ventilation in Mortlake in the holidays?
Yes. The holidays are the usual time for school work. Food Standards Agency records list about 16 schools, colleges and universities with registered kitchens within about a mile and a half of Mortlake. Just give us a ring on 0345 646 2711, or send details by email with your term dates and we’ll plan around them.
Can you price the work without visiting?
Usually, yes. Send a few wide photos plus close-ups of panels, filters or grilles, and a fixed quote normally follows within one working day. Some sites still need a visit, and we’ll say so.
Do you have insurance?
Yes, fully. We also hold CHAS and SafeContractor, for sites that check contractor safety.
Do you give a certificate after the clean?
Yes, a TR19® certificate and a photo report. The report also suggests when the unit should next be inspected.
Can you look after several sites?
Yes. We work across South East England and London, so sites at different addresses can be planned together as one programme. Every site has its own report.
How long does it take to clean an air handling unit?
It takes half a day to a full day per unit, with large plant planned over several shifts. The unit’s size and condition make the biggest difference, and we’ll confirm the time when we quote.
What accreditations do you have?
We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
Places near Mortlake
Also in Mortlake
Managing agents and facilities teams in Mortlake
Facilities teams in offices, schools and healthcare sites book us too across Greater London. Larger estates can be phased building by building to keep disruption down.
From a single site to a large estate, you get the same standard: diagnosis, a fixed price, work booked around your hours and a written report with pictures.
What AHU cleaning looks like in Mortlake
Food Standards Agency data includes about 16 schools, colleges and universities and about 21 care, childcare and hospital premises within 1.5 miles or so of the middle of Mortlake. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. For Mortlake, the closest hospital is Barnes Hospital, roughly less than half a mile east. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. Many London buildings have had their ductwork altered through several fit-outs, so an inspection comes first.
Hospitals such as Barnes Hospital (about within half a mile east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Mortlake are no different. Classrooms and halls at schools such as Thomson House School are easiest to work in when pupils are away.
Mortlake is about 3 miles west of Fulham, in Greater London. Every kind of commercial site in Mortlake, we can take on AHU cleaning. We can work out of hours so trading isn’t interrupted. 764 places in Greater London are on our list, large and small. Our London page covers sites nearby, about 8 miles away.
Here we cover the SW14, SW13 and SW15 postcode area for AHU cleaning. We cover sites on Elm Road, Well Lane and Coval Road and the roads around them. Being close to the A3003, Mortlake is simple for us to get to at any hour. If your site is just outside Mortlake, we cover East Sheen (1 mile south-west), North Sheen (1 mile north-west), Barnes (1 mile north-east), Grove Park (1 mile north) and Roehampton (1 mile south-east). Larger places within reach include London (8 miles east), City of Westminster (6 miles north-east), Marylebone (6 miles north-east), Kensington (4 miles north-east), St Pancras (8 miles north-east) and Shoreditch (9 miles north-east).
Near you in Mortlake
Typical jobs here are in premises near Richmond Park Academy, Hare and Hounds pub and Palewell Park and the streets around them. There’s a railway station in Mortlake itself: Mortlake station. Nearby you’ll also find Ubuntu Museum: African Museum of Humanity (1.1 miles south-east) and Barnes Hospital (less than half a mile east). The countryside around Mortlake includes Richmond Hill and Kew Gardens Lake.
What staff can safely do
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’s where we come in.
In-house cleaning and specialist cleaning do different jobs. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but they do not reach the grease that builds up further in. That part needs specialist access and equipment.
Aftercare tips
A little care between visits keeps the system in better shape. Our advice:
- Report musty smells from the vents right away
- Report stiff or damaged access doors
- Watch for drips or damp patches near the plant
- Keep the area around the fresh air intake clear
The report shows each section of the unit before and after, and note any part we couldn’t get to. It also notes faults we spotted, such as damaged panels or a blocked drain.
Do not let leaves, litter or stored materials build up near the fresh air intake. Anything around the intake is likely to be drawn in.