Surrey · Air handling unit cleaning
AHU Cleaning in Old Malden
Air handling unit cleaning in Old Malden, surveyed first and signed off with a written report and pictures. Ask us for a fixed quote.
- Plant that has been serviced but not cleaned
- Debris and leaves in the fresh air intake
- Coils clogged with dust and debris
Common questions in Old Malden
Will you come out to Old Malden?
Yes. Old Malden is within the area we cover across London and the South East. The journey is planned ahead, so a few details about the route help.
Do you work at weekends in Old Malden?
Yes. We work evenings, overnight and at weekends. It means the site in Old Malden keeps running as normal. Tell us your opening hours when you ask for a quote.
When should our AHU next be cleaned?
Under TR19® Air, cleaning is led by inspection and risk rather than a set calendar. Each report suggests when the unit should next be looked at.
How long does it take to clean an air handling unit?
It takes anything from half a day for one small unit to several shifts for a plant room full of them. Size, layout and how dirty it is decide the rest, and we will confirm the time when we quote.
What does TR19 mean?
It’s BESA’s specification and the benchmark insurers, fire officers and EHOs look to. It covers how systems are inspected, cleaned and checked and expects a risk-based approach.
Do you work with multi-site operators?
Yes. We work across South East England and London, so we can schedule a run of sites on one programme. Each site gets its own report and pictures.
Is there a report after cleaning?
Yes, both a certificate and a report with photos. It includes a recommended date for the next check.
Can we book visits on a schedule?
Yes. We run scheduled maintenance contracts, set at the interval the system needs. Each report recommends when the next visit should be.
AHU cleaning in Old Malden
All the building’s air passes through the fan, so dirt on the impeller and housing gets spread around. We clean the fan section along with the rest of the unit, once the unit has been shut down and isolated. If you’re dealing with coils clogged with dust and debris and blocked condensate drains and slimy trays, we can put it right, from heating and cooling coils, dampers and louvres and supply and extract fans onwards.
In a place like Old Malden, air handling units are often tucked into roof spaces or small plant rooms, out of sight and easy to overlook. Filters, coils and drain trays need attention whatever the size of the unit.
Think of the report as the system’s health record: dated, with pictures, and showing what was done. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal and sits alongside the report.
- Location
- Old Malden (KT19, KT4, KT5)
- Region
- Surrey
- Reporting
- Photo report after each visit
- Quote
- A fixed price before we start
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Aftercare tips
How long the results last depends on use and care. We suggest:
- Check the drain tray is emptying during routine visits
- Keep inspection doors on the unit in good order
- Keep the certificate and photo report with the plant records
- Plan the next inspection before the last report gets filed away
If the ductwork hasn’t been cleaned, consider it next. Cleaning the unit and ducts together gives the best result, and we can quote for both.
Check drain trays and condensate drains during routine maintenance. Catching a slow drain early stops standing water building up.
Places near Old Malden
More services for Old Malden
Leave it or put it right?
Stuffy rooms and stale smells in a building in Old Malden can sometimes be traced back to the AHU. A clean tackles the source instead of masking it. Systems on quieter sites still build up dirt and wear, just more slowly.
What you pay depends on the size of the system, what state it’s in and how easy it is to reach. You get a fixed price before we start, so you know where you stand.
What you get with us
- Photo reports with every job
- Every job surveyed first
- Full insurance on every job
- Out-of-hours work and a 24/7 emergency line
See how cleaning jobs are priced or how to check a contractor.
Common problems we fix in Old Malden
An AHU’s intake draws in outdoor air and everything in it: dust, pollen, leaves and debris. Most of it lands at the intake and the first stage of filters, and the finer material travels on.
What we are most often called out for:
- Dust built up on fan impellers
- Drain trays holding standing water
- Odours coming through the supply air
- Units needing a clean before a new tenant or handover
Workplaces around Tolworth 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 figure could change on the day
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- If they look at the system before pricing
- What insurance they carry
How the visit works
We’re used to working while the site is closed. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. The visit itself takes one overnight shift for many single units, with bigger plant phased. Everything the job in Old Malden needs is worked out beforehand, from the survey.
- First the unit is surveyed, from photos or a visit, and the scope agreed.
- The unit is shut down with your site team and the area protected.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- We clean out the drain tray and make sure it drains.
- You get a TR19® certificate and a photo report.
Getting ready for the visit
- Name a contact who can let us in at the agreed time
- Make sure equipment near the work can be switched off and left to cool
- Let us know how we reach the system, including roofs, risers and plant rooms
Ask for a quote
To get a fixed quote, phone us on 0345 646 2711 or use the quote form with the site type, your trading hours and a short description of the system. A few photos and your last certificate or report help a lot. We usually come back within one working day.
Related advice
Managing agents and facilities teams in Old Malden
Keeping records across a portfolio is half the battle. Each visit produces a dated report with pictures, ready to show insurers, fire officers or EHOs.
We work for landlords, managing agents and facilities managers as well as the people running the site. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
How the job changes from site to site
Heating and cooling coils
A dirty coil holds back the air and makes heating and cooling less effective. A clean gets air moving through the coil properly again.
Drain trays
Older trays can corrode and start leaking. We record their condition with photos so you can decide on any repairs.
Old Malden buildings and their air
There are about 27 schools, colleges and universities, about 38 caring premises (care homes, nurseries and hospitals) and about 3 hotels, B&Bs and guest houses on the FSA’s food hygiene register within about 1.5 miles of central Old Malden. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. Tolworth Hospital is the nearest hospital, about 0.9 miles west of Old Malden. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale. We cover Old Malden, about 11 miles from central London, as part of our work across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site.
Classrooms and halls at schools such as Knollmead Primary School are easiest to work in when pupils are away. Hospitals such as Tolworth Hospital (about 0.9 miles west) show how much a building can rely on clean ventilation, and smaller healthcare sites near Old Malden are no different.
Old Malden is about 2 miles north-west of Ewell, in Surrey. We provide AHU cleaning for commercial premises of every kind in Old Malden and the rest of Surrey. We cover 395 places across Surrey, from busy centres to quieter spots. You can also see our page for London, roughly 11 miles from Old Malden.
Work in KT19, KT4 and KT5 follows the same survey, fixed quote and written report as everywhere else we cover. Whether your site is on Curtis Road, Rowden Road and Grafton Road or a nearby road, we can help. Nearby, we also carry out AHU cleaning in Worcester Park (1 mile east), Tolworth (1 mile north-west), Stoneleigh (1 mile south-east), Berrylands (1 mile north-west) and Chessington (2 miles south-west). Within a short drive, we also cover Woking (14 miles west), Epsom (3 miles south), Horley (14 miles south), Redhill (10 miles south-east), Egham (13 miles west) and Reigate (10 miles south).
What’s near Old Malden
Around Old Malden, our work takes us to kitchens and buildings near Richard Challoner School, The Plough Inn Public House and Hogsmill LNR and the streets around them. The closest station to Old Malden is Tolworth station, about 0.5 miles west of the centre. Well-known places in the area include Bentall Centre (3 miles north-west) and Tolworth Hospital (0.9 miles west). Open spaces near Old Malden include The Lake and Kingston Hill Road area.
Fixed quotes for AHU cleaning in Old Malden
Before we fix a price, we need to know a few things. We check:
- How easy every part is to reach
- Whether several sites go on one quote
- Whether it’s a one-off visit or part of a schedule
- The scale of the work
Every site is different, so we price each one individually. Size, access, the condition of the system and when we can work all make a difference.
What to send for a quote
You do not need the technical terms. It helps if you can send:
- How we’d reach plant on a roof or in a plant room
- Any access panels or hatches you can see
- Wide photos of the system and the area around it
- The postcode and the type of business
Quoting starts with a diagnosis, either from pictures and details you send or from a site visit. After that, you get a fixed price for the work so you know the cost before work begins.