Surrey · Air handling unit cleaning
Air handling unit cleaning in Lower Green, Surrey
For air handling unit cleaning in Lower Green, one call is all it takes, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Filters that are clogged or overdue
- Blocked condensate drains and slimy trays
- Units needing a clean before a new tenant or handover
AHU cleaning in Lower Green
Drain trays under cooling coils are meant to empty. When the drain blocks, water sits there and the tray turns slimy, in the airstream that feeds the building. Cleaning and clearing it is a key part of the job. Typical jobs include filters that are clogged or overdue and dust built up on fan impellers, on heating and cooling coils, internal panels and supply and extract fans.
Work in a small place like Lower Green starts with agreeing access and timings.
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.
- Location
- Lower Green (KT10, KT12)
- Wider area
- Surrey
- Records
- Photo report after every visit
- Quote
- Fixed quote, usually within a working day
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Common questions in Lower Green
Can a school’s ventilation in Lower Green be done out of term time?
Yes, and it’s the easiest time to do it. The FSA’s register shows about 9 schools and colleges with food registrations within roughly a mile and a half of Lower Green. Tell us your holiday dates and we will book the visit for when the site is empty.
Do you work at weekends in Lower Green?
Yes, evening, overnight and weekend work is normal for us. The work in Lower Green can fit around your hours. When you ring 0345 646 2711, or email photos, mention when the site is quiet.
What does TR19 mean?
TR19® is BESA’s specification for ventilation hygiene. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.
How much notice should we give?
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.
Which accreditations do you hold?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we are fully insured.
How long will the unit be out of action?
Typically the clean takes one overnight shift for many single units, with bigger plant phased. We plan the shutdown around that, out of hours if needed.
Can you come out in an emergency?
Yes, day and night, every day of the year. Our office is open from 8am to 6pm on weekdays, with the emergency line covering every other hour.
Will the ventilation be off while you clean?
Yes. Cleaning needs the unit off and isolated, and we time the work to suit the site.
Places near Lower Green
More services for Lower Green
What happens if it’s left?
Leave an AHU uncleaned and the dirt doesn’t stay put. It’s carried through the ductwork and out of the grilles, which is why the unit and the ducts are best cleaned together. A planned visit to Lower Green is easier to arrange than an emergency callout.
You will not find a price list here, because the cost depends on the site in front of us. For a fixed quote, ring 0345 646 2711 or drop us a line, and we’ll talk you through it.
What you get with us
- A fixed price before any work starts
- Full insurance on every job
- In business since 2009
- A single point of contact for sites across the South East and London
What affects the cost of AHU cleaning
The survey tells us what the work involves. The main factors are:
- The condition we find in the survey
- Whether several sites go on one quote
- Whether we need access equipment or extra panels
- The scale of the work
Putting the work off seldom saves money. Problems in a system tend to grow, and a neglected system can mean more work. If you’re unsure, call us on 0345 646 2711, or email photos for straight advice and a fixed quote.
What to send for a quote
When you contact us, it’s useful to have:
- A few general shots of the system
- Any access panels or hatches you can see
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- The times we could work without disrupting the site
For a fixed quote, phone us on 0345 646 2711, or email photos with the site type, your trading hours and a short description of the system. A few pictures and your last certificate or report help a lot. We normally come back within one working day.
Managing agents and facilities teams in Lower Green
We regularly work with managing agents. Send the address, what’s needed and how access works, and we’ll send a fixed quote.
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. With shared responsibility, good records help everyone.
Do you need AHU cleaning in Lower Green?
An AHU’s intake draws in outdoor air and everything in it: dust, pollen, leaves and debris. The intake section and first filters take the brunt, and the finer material travels on.
Clients typically contact us after spotting something like this:
- Dust built up on fan impellers
- Intake sections clogged with outdoor debris
- Filters that are clogged or overdue
- Units that have only ever had filter changes
Healthcare buildings such as No. 2 New Zealand General Hospital, about 2.6 miles west, depend on their ventilation; if you manage a surgery, clinic or care home near Lower Green, yours matters too.
Questions to ask before you book
- Whether a survey comes first
- Which accreditations they hold, and whether you can check them
- Whether they’re fully insured
- What’s included in the scope, part by part
How the visit works
There’s very little for your team to do on the day. Someone lets us in at the agreed time and shows us where everything is, and we take it from there. Afterwards, the area is left tidy and the written report follows. For a village or hamlet like Lower Green, tell us about narrow lanes, gates and parking when you book.
- We agree a shutdown window that suits the building.
- Before cleaning, each section is photographed.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- The fan and drain tray are cleaned and the drain checked.
- We take after photos and issue the certificate and report.
Getting ready for the visit
- Mention any sign-in, permit or induction we need
- Tell us the best time to work, such as after service or at a weekend
- Dig out any earlier paperwork for the system
Getting a quote
Need a price for AHU cleaning? Please give us a ring on 0345 646 2711, or email photos with a few details about the site. We’ll explain what we’d do and send a fixed quote before you commit to anything.
Related advice
Honest limits
An honest diagnosis matters more to us than a booking, so here’s what AHU cleaning will not do:
- Ventilation that was badly designed in the first place
- Ductwork downstream of the unit, which is a separate clean
- Breakdowns that need a mechanical engineer
Not sure which it is? You can call 0345 646 2711, or email photos and we’ll tell you honestly.
Where we work
- Filter sections
- Dampers and louvres
- Drain trays
- Heating and cooling coils
- Internal panels
- Supply and extract fans
AHU cleaning around Lower Green
Food Standards Agency data includes about 9 schools, colleges and universities and about 12 caring premises (care homes, nurseries and hospitals) across Lower Green 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. For Lower Green, the closest hospital is No. 2 New Zealand General Hospital, roughly 2.6 miles west. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. About 14 miles out from central London, Lower Green is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site.
Workplaces around Esher station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts. For schools like Cranmere Primary School, the holidays are the usual time to inspect and clean ventilation.
Lower Green is about 1 mile north of Esher, in Surrey. Across the KT10 area, we can take on AHU cleaning. Lower Green is one of 395 places in Surrey we cover for AHU cleaning. Guildford is in our area too, about 13 miles from Lower Green.
We work across the KT10 and KT12 postcode area for AHU cleaning and the streets around it. Whether your site is on Farm Road, Douglas Road and Blair Avenue or anywhere close by, our technicians can take on the work. We also cover the places around Lower Green: Esher (1 mile south), Weston Green (1 mile east), Molesey (1 mile north-east), Hinchley Wood (1 mile east) and West End (1 mile south-west). Within a short drive, we also cover Guildford (13 miles south-west), Woking (10 miles south-west), Epsom (5 miles south-east), Redhill (13 miles south-east), Ewell (5 miles south-east) and Egham (8 miles north-west).
Around Lower Green
Typical jobs here are in premises near Giggs Hill Green, Milbourne Lodge School and Esher Church of England High School, among other places. Lower Green’s nearest station is Esher station, about 0.6 miles east of the centre. Well-known places in the area include Elmbridge Museum (0.9 miles south) and Bentall Centre (3.4 miles north-east). For a walk, there’s The Lake and The Wood.
Keeping the system healthy
How long the results last depends on use and care. We suggest:
- Flag stale or damp smells in the supply air
- Diary the inspection date recommended in the report
- Report stiff or damaged access doors
- Check the drain tray is emptying during routine visits
Restart the unit with your site team or maintenance contractor once we have finished. Check the drain tray is emptying over the first few days to confirm water is draining away.
Check drain trays and condensate drains during routine maintenance. Catching a slow drain early stops standing water building up.