Surrey · Air handling unit cleaning
Air handling unit cleaning in West Molesey, Surrey
AHU cleaning for businesses, landlords and public buildings in West Molesey. CHAS, SafeContractor and ISO 9001, and fully insured.
- Blocked condensate drains and slimy trays
- Dirty filters cutting the airflow
- Odours coming through the supply air
How we handle AHU cleaning in West Molesey
If the units serving a building in West Molesey have only had filter changes for years, the coils, fan and casing can be carrying far more dirt than anyone has seen. A full AHU clean takes in the whole unit. If you have dust-coated heating and cooling coils and blocked condensate drains and slimy trays, we can help, from heating and cooling coils, internal panels and dampers and louvres onwards.
In a smaller place like West Molesey, buildings with ducted ventilation are more likely to be a school, a surgery, a care home or a small business unit than an office block. Smaller systems still gather dust and need inspecting.
A written report with photos follows every visit, 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.
- Place
- West Molesey (KT8)
- Wider area
- Surrey
- Reporting
- Report and pictures after the visit
- Quote
- A fixed price before work begins
- Working hours
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
Honest limits
A few issues sit outside what this work can do:
- The supply and extract ducts, quoted separately
- Leaking heating or cooling coils
- Controls and BMS settings that run the unit
If you’re not sure, just phone us on 0345 646 2711, or email photos and we’ll give you a straight answer before booking.
Parts of the system we cover
- Dampers and louvres
- Drain trays
- Heating and cooling coils
- Internal panels
- Supply and extract fans
- Filter sections
Nearby places to West Molesey
Also in West Molesey
Ventilation in West Molesey buildings
Food Standards Agency records list about 13 schools, colleges and universities and about 13 care, childcare and hospital premises registered as food businesses across West Molesey 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. West Molesey, about 14 miles from central London, is within our usual area. Evening, overnight and weekend visits are all possible. Teddington Memorial Hospital is the nearest hospital, about 2.1 miles north-east of West Molesey. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes.
Classrooms and halls at schools such as Chandlers Field Primary School are easiest to work in when pupils are away. If you run a surgery, dental practice or care home near West Molesey, clean ventilation matters as much to you as to a hospital like Teddington Memorial Hospital (about 2.1 miles north-east).
West Molesey is about 2 miles north-east of Walton-on-Thames, in Surrey. From the centre of West Molesey to the outskirts, we cover AHU cleaning for every kind of premises, from small sites to large estates. Our area takes in 395 places across Surrey, large and small. London is in our area too, around 14 miles away.
Every address in KT8 is covered for AHU cleaning, from the main roads to the quietest streets. That includes premises on High Street, Walton Road and St Peter's Road and the roads around them. West Molesey sits on or near the B369, which makes travel easy for AHU cleaning. We also cover East Molesey (1 mile east), Hampton (1 mile north), Hampton Hill (2 miles north-east), Hanworth (2 miles north) and Teddington (2 miles north-east). We also work in nearby towns such as Guildford (14 miles south-west), Woking (11 miles south-west), Epsom (6 miles south-east), Redhill (14 miles south-east), Ewell (6 miles south-east) and Egham (8 miles west).
Around West Molesey
In West Molesey, that means kitchens and buildings near Lower Hampton Road, Jolly Coopers pub and Esher College. The nearest railway station is Hampton station, roughly 0.9 miles north. Nearby you will also find Teddington Memorial Hospital (2.1 miles north-east) and Bentall Centre (3 miles east). For a walk, there’s Kingston Hill Road area and The Lake.
Different parts, different methods
Fans and fan sections
Every bit of air passes the fan, so a dirty fan sends dirt downstream. The impeller, its housing and the fan chamber are cleaned.
Internal casing and panels
We open each section through its doors and close them securely when we are done, and check every one is shut.
West Molesey: your questions answered
Can ventilation in schools around West Molesey be cleaned out of term?
Yes, and it’s the easiest time to do it. The FSA’s register shows about 13 schools and colleges with food registrations within roughly a mile and a half of West Molesey. Tell us your holiday dates and we will book the visit for when the site is empty.
Can you get to a site in West Molesey?
Yes. West Molesey is within the area we cover across London and the South East. A survey first, from photos or a visit, means we arrive with the right kit.
Do you need to switch the unit off?
Yes. The fan must be stopped and the unit isolated, and we time the work to suit the site.
What should I send you?
A short description and a few pictures, with the address and opening hours. We will ask for anything else we need.
Are you fully insured?
Yes. We carry full insurance, and we’ve been trading since 2009.
Is there a survey before the work?
Yes, always. Diagnosis comes before treatment: the survey tells us what the system needs and how to reach it and the fixed quote is built on it.
Which accreditations do you hold?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
What happens if you can’t reach some of it?
We never leave them off the paperwork. You’ll know exactly which parts weren’t reached and why, and we can quote to improve the access.
Keeping the system healthy
Think of this as the after-treatment advice, short and simple:
- Clear leaves and litter away from the intake
- Stick to the filter change plan
- File each AHU report in the maintenance log
- Look at the condensate drain whenever the unit is serviced
Photos in the report cover the filters, coils, drain tray, fan and casing, along with anything we couldn’t reach. Any defects we noticed, like a leaking tray or damaged lining, are listed.
Regular filter changes are the best protection an AHU has. Once filters clog, dirt starts getting past them.
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, so cleaning the ducts without the unit only goes so far. A planned visit to West Molesey fits your hours; an emergency doesn’t.
We don’t list prices on the website, because the cost depends on the site in front of us. For a fixed quote, call 0345 646 2711 or use the quote form, and we will explain what it covers.
Why West Molesey businesses choose us
- Work around your opening hours, with 24/7 emergency cover
- We diagnose before we treat
- Trading since 2009
- A fixed price before any work starts
See what affects the cost or our accreditations and certificates.
Common problems we fix in West Molesey
Air handling units are usually tucked away on roofs, in plant rooms or above ceilings and are rarely seen by anyone but maintenance staff. Months can pass without anyone looking inside.
Common reasons sites call us include:
- Dust built up on fan impellers
- Rooms that smell stuffy when the system runs
- Blocked condensate drains and slimy trays
- Leaves and litter drawn into the unit
If you run an office near Hampton station, its supply ductwork can gather dust for years before anyone looks inside.
What your quote should include
- What hours they’ll be on site
- Proof of insurance
- If the quote is a fixed price or an estimate
- Whether the quote is based on a survey or pictures
What happens on the day
Each visit runs to the same pattern: sheeting and protection first, make the system safe, do the work, clear away and leave you the report. On site, the work takes half a day to a full day per unit, with large plant planned over several shifts. In a smaller place like West Molesey, parking is rarely the issue, but tell us about gates, roof access and opening hours.
- 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.
- The fan and drain tray are cleaned and the drain checked.
- After pictures are taken and the certificate issued.
How to prepare
- Mention any parking or loading restrictions
- Let us know when the site is closed or quiet
- Arrange a key holder or contact on site
Getting a quote
To help us quote: the address, the type of site and when it’s open, a few pictures and the last certificate or report, if there is one. Then phone us on 0345 646 2711 or email us.
Read more
In-house cleaning or a specialist?
Good housekeeping makes our visits easier, not unnecessary. Clean filters and tidy surfaces slow the build-up, but the parts you can’t see still need a specialist at the right interval.
Your own staff can handle the daily basics: 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, which is where we come in.