Surrey · Air handling unit cleaning
Air handling unit cleaning in Cobham, Surrey
Specialist AHU cleaning for Cobham: diagnosis first, then a fixed quote, the work and a report with pictures. Ask us for a fixed quote.
- Units needing a clean before a new tenant or handover
- Fan sections that haven’t been cleaned in years
- Dirty coils holding back the airflow
AHU cleaning in Cobham
Heating and cooling coils trap dust that gets past the filters. 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. The work covers drain trays, supply and extract fans and dampers and louvres, and people most often call us about stale or musty smells from the ventilation and air handling units with blocked filters.
Smaller buildings around Cobham often keep their ventilation units in a roof void or plant cupboard, out of sight and easy to overlook. Filters, coils and drain trays need attention whatever the size of the unit.
We are CHAS and SafeContractor accredited, we hold ISO 9001 and we are fully insured. We’re also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Location
- Cobham (KT11)
- Region
- Surrey
- Records
- Photo report after each visit
- Price
- A fixed price before any work starts
- When we work
- When your site is closed, plus a 24/7 line
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
What affects the cost of AHU cleaning
Your quote is based on your site. We take into account:
- What state the system is in
- Parking and loading at the site
- How many systems or sites are involved
- Any permits to work or inductions
Combining work into one visit or one programme often makes better use of the time. Tell us about everything you’d like looked at, and you’ll get one fixed quote.
What we need to know
To help us quote quickly, please include:
- Wide photos of the system and the area around it
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Any access panels or hatches you can see
- The postcode and the type of business
We don’t publish a price list, because no two systems are the same. Instead, we look at your site first, from photos or a survey, and then send you a fixed quote. To get going, call 0345 646 2711 or use the quote form.
Do you need AHU cleaning in Cobham?
It matters for two reasons: air quality, since the unit feeds occupied rooms, and performance, since dirt makes it strain. For the people using the building every day, that’s the air they breathe for hours on end.
Look out for any of the following:
- Dust built up on fan impellers
- Debris and leaves in the fresh air intake
- Dirty filters cutting the airflow
- Plant that needs cleaning after a refit
Wherever a school like St Andrew's CofE Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
What your quote should include
- Whether the quote shows VAT
- What happens if part of the system cannot be accessed
- Proof of insurance
- Whether the work can be done while the site is closed
AHU cleaning around Cobham
Food Standards Agency records list about 8 schools, colleges and universities and about 10 hospitals, care homes and childcare premises registered as food businesses across Cobham and its immediate surroundings (about a mile and a half). Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. About 3.9 miles north of Cobham is No. 2 New Zealand General Hospital, the nearest hospital. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. Cobham is about 17 miles from central London, well within the area we cover across London and the South East. Visits are booked around your hours, evenings and weekends included.
Hospitals such as No. 2 New Zealand General Hospital (about 3.9 miles north) show how much a building can rely on clean ventilation, and smaller healthcare sites near Cobham are no different.
Cobham is about 6 miles west of Epsom, in Surrey. If you need AHU cleaning in Cobham, please phone us on 0345 646 2711, or send details by email for a fixed quote. We work across South East England and London, Cobham included. 395 places in Surrey are on our list, large and small. Guildford is in our area too, around 10 miles away.
Our technicians cover all of KT11 for AHU cleaning and the roads nearby. If you need AHU cleaning at premises on High Street, Summerhays and Fairfield Park or a nearby road, we can help. If your site is just outside Cobham, we cover Stoke D'Abernon (1 mile south-east), Oxshott (2 miles east), West End (2 miles north), Pachesham Park (3 miles east) and Esher (3 miles north-east). Within a short drive, we also cover Guildford (10 miles south-west), Woking (8 miles west), Camberley (14 miles west), Epsom (6 miles east), Horley (15 miles south-east) and Redhill (12 miles south-east).
Local landmarks in Cobham
We work in commercial kitchens and buildings around The Running Mare pub and West End Common, among other places. Cobham’s nearest station is Cobham & Stoke Dabernon station, roughly 1.1 miles south of the centre. A little further out are Elmbridge Museum (3 miles north-east) and Chessington Castle Hill (4.9 miles east). Open spaces near Cobham include Jubilee Wood and Claremont Lake.
What your team can do, and what needs us
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. Leave those to us.
Keep a record of what your team does. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, alongside our reports.
What the work involves, part by part
Heating and cooling coils
Because cooling coils run wet, the dirt on them tends to cling. The coil and its drain tray are cleaned as one job.
Rooftop and plant room units
Smaller units in ceiling voids are part of the work as well. The space underneath is protected with sheeting first.
Multi-site and managed buildings
Where a tenant occupies the premises but the landlord owns the building, it’s worth checking the lease for who maintains the systems. We are 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.
How it works
The visit has three parts: 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. The middle part takes longest, which takes one overnight shift for many single units, with bigger plant phased. Visits to a place like Cobham are planned ahead, so we arrive with what the survey says the job needs.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
Getting ready for the visit
- Mention any locked doors, roof access or ceiling voids
- Let us know about permits to work or site inductions
- Arrange a key holder or contact on site
How to get a quote
To get a fixed quote, give us a ring on 0345 646 2711 or email us and tell us the type of site, your opening hours and roughly what the system looks like. Photos and the last report, if you have one, make the quote quicker. You will normally have a quote within one working day.
Related advice
Cobham: your questions answered
Do you work in villages like Cobham?
Yes, smaller places are covered as well as towns. The journey is planned ahead, so a few details about the route help.
Can you clean school ventilation in Cobham during the holidays?
Yes, and it’s the easiest time to do it. Around Cobham, the Food Standards Agency lists about 8 schools and colleges with registered kitchens within a mile and a half or so. Send us your term dates when you phone us on 0345 646 2711 or email us, and we’ll fit the work in.
Do you need to switch the unit off?
Yes, while the clean is under way. Out-of-hours work is available to keep disruption down.
How much notice do you need?
That depends on the slot you want and the size of the job. Tell us your preferred dates when you ask for a quote, and for anything urgent, ring our 24/7 emergency line.
Where does the waste go?
We take it away at the end of the visit. While we work, it’s kept contained so the area stays clean.
What information do you need?
Some pictures and a quick description of the system plus the address and your hours. If we need more, we’ll ask.
How do you keep the site clean during the work?
Floors and surfaces near the work are sheeted before work begins, and anything we remove is contained. Before we leave, we tidy up and clean down.
What’s TR19?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It sets out inspection, cleaning and record keeping and expects a risk-based approach.
Places near Cobham
Also in Cobham
Looking after it afterwards
Once we’ve finished, these simple steps help:
- Make sure condensate is draining away
- Book the next check in line with the report
- Note any water around the unit or leaks below it
- Keep the certificate and photo report with the plant records
The report suggests a date for the next inspection or clean, based on what we found. Under TR19® Air the timing is set by inspection and risk, not a fixed calendar.
Have the unit inspected regularly, in line with the risk-based approach of TR19® Air instead of leaving it to guesswork.