Greater London · Air handling unit cleaning
Tolworth AHU cleaning
One call covers air handling unit cleaning in Tolworth, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Dirty filters cutting the airflow
- Units that have only ever had filter changes
- Leaves and litter drawn into the unit
AHU cleaning for kitchens and businesses in Tolworth
Our AHU cleans for sites in Tolworth cover the parts that collect dirt: the filter section, heating and cooling coils, drain trays, fan and casing. Every clean comes with a TR19® certificate and before and after photos in a report. If you are dealing with dirty coils holding back the airflow and condensate trays that won’t empty, we can help, from heating and cooling coils, dampers and louvres and drain trays onwards.
London offices and flats often have ductwork added through successive refits, leaving sections that are hard to reach and seldom cleaned. In Tolworth, as elsewhere, cleaning starts with an inspection of what’s there.
Our accreditations include CHAS, SafeContractor and ISO 9001, and we’re fully insured. We’re also a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we’ve been trading since 2009.
- Location
- Tolworth (KT5, KT6, KT3)
- Region
- Greater London
- Paperwork
- Written report with pictures
- Quote
- A fixed price before we start
- Working hours
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
Common problems we fix in Tolworth
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.
These are the problems we see most often:
- Drain trays holding standing water
- Rooms that smell stuffy when the system runs
- Units needing a clean before a new tenant or handover
- Dirty fans and fan housings
If you run a surgery, dental practice or care home near Tolworth, clean ventilation matters as much to you as to a hospital like Tolworth Hospital (about 0.5 miles south-west).
Comparing quotes
- Whether a written report and photos are included
- Whether the work can be done while the site is closed
- Whether they’re fully insured
- When the next visit should be, and why
Aftercare tips
Looking after the system between visits is straightforward, and it makes the next visit easier:
- Look at the condensate drain whenever the unit is serviced
- Plan the next inspection before the last report gets filed away
- Make sure the unit’s access doors open easily
- Note any water around the unit or leaks below it
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.
Change or clean filters on time. Overloaded filters let more dirt through to the coils and fan.
What AHU cleaning looks like in Tolworth
There are about 33 schools, colleges and universities, about 55 caring premises (care homes, nurseries and hospitals) and about 5 hotels and B&Bs on the FSA’s food hygiene register in and around Tolworth, up to about a mile and a half out. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. For Tolworth, the closest hospital is Tolworth Hospital, roughly 0.5 miles south-west. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. London plant rooms are often on roofs or in basements reached through occupied floors.
Wherever a school like Our Lady Immaculate Catholic Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time. If you manage offices or shops near Tolworth station, their ventilation can be inspected and cleaned out of hours.
Tolworth is about 2 miles north-west of Ewell, in Greater London. We carry out AHU cleaning for commercial premises of every kind in Tolworth and the rest of Greater London. We cover 764 places across Greater London, large and small. Our London page covers sites nearby (11 miles or so).
Every address in KT5, KT6 and KT3 is within our area for AHU cleaning, from busy streets to back roads. Whether your site is on Pyne Road, Ewell Road and Derby Road or anywhere close by, our technicians can take on the work. Nearby, we also carry out AHU cleaning in Berrylands (1 mile north), Old Malden (1 mile south-east), Surbiton (1 mile north-west), Worcester Park (1 mile south-east) and Chessington (2 miles south-west). We also work in nearby towns such as London (11 miles north-east), City of Westminster (11 miles north-east), Marylebone (11 miles north-east), Kensington (9 miles north-east), St Pancras (12 miles north-east) and Shoreditch (13 miles north-east).
Local landmarks in Tolworth
Typical jobs here are in premises near Richard Challoner School, Hogsmill LNR and Shrewsbury House School. The closest station to Tolworth is Tolworth station, roughly 0.5 miles south of the centre. Well-known places in the area include Cockney Museum (2.1 miles south-east) and Bentall Centre (2.2 miles north-west). The countryside around Tolworth includes Southwood Open Space and The Lake.
Towns and villages near Tolworth
Also in Tolworth
Staff cleaning versus specialist work
When your team notices a problem between visits, such as dripping grease, a noisy fan, a smell or a filter that won’t come clean, it’s best reported rather than tackled in-house. We’ll take a look and send you a fixed quote.
Keep a record of what your team does. A dated log of in-house cleaning and checks shows an inspector that the system is looked after between visits, alongside our reports.
Why deal with it now?
Cleaning a unit while it only has light dust is quick. Years of build-up make the job longer and harder, particularly where damp has made it stick. Leaving it on a busy London site only adds to the work.
When the work has to happen, how we reach it and how big the site is all affect the cost. We take each of them into account, and the price is fixed before any work starts.
What you get with us
- Every job surveyed first
- One contact for all your sites in London and the South East
- A fixed price before any work starts
- Accredited under CHAS and SafeContractor, with ISO 9001
FAQs for Tolworth
Can ventilation in schools around Tolworth be cleaned out of term?
Yes, and it’s the easiest time to do it. Around Tolworth, the Food Standards Agency lists about 33 schools and colleges with registered kitchens within a mile and a half or so. Send us your term dates when you give us a ring on 0345 646 2711, or email photos, and we will fit the work in.
Does London parking affect a job in Tolworth?
London parking can be tight, so details of loading bays and permits help. Where restrictions apply in the day, an evening or overnight visit typically gets round them.
Do you give a certificate after the clean?
Yes. A TR19® certificate and photo report are sent after the clean, including anything we think needs attention.
Are you fully insured?
Yes, fully. CHAS and SafeContractor accreditation sit alongside it for clients who vet their contractors.
Do you work with multi-site operators?
Yes. Our area covers London and the South East, so sites at different addresses can be planned together on one programme. Every site has its own report.
Can you quote from photos?
In many cases, yes. With good pictures, the site type and your last report, we can price many jobs. Where we can’t see enough, we arrange a survey.
What’s TR19?
TR19® is the BESA specification for keeping ventilation systems clean. 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?
Earlier is better, especially for out-of-hours work. Quotes normally come back within one working day, and there’s a 24/7 line for emergencies.
What affects the quote in Tolworth
Sites vary more than people expect. What affects the quote:
- How many systems or sites are involved
- Whether we need access equipment or extra panels
- Parking and loading at the site
- The size of the system
You won’t find a price list here, because each job is priced on what it involves. For a fixed quote, call 0345 646 2711 or drop us a line, and we will explain what it covers.
What to send for a quote
To help us quote quickly, please include:
- The times we could work without disrupting the site
- Detail shots of panels, filters and grilles
- The postcode and the type of business
- Any previous report or certificate
Photos are the quickest way to a quote: the system from a couple of angles, plus any access panels or hatches. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.
Honest limits
We won’t sell you work that doesn’t address the problem, so here are the limits:
- Dirty ducts beyond the unit itself
- Controls and BMS settings that run the unit
- Airflow problems caused by the system’s design
If in doubt, ring 0345 646 2711, or email photos and we’ll say what we think before you book.
Parts of the system we cover
- Heating and cooling coils
- Supply and extract fans
- Dampers and louvres
- Internal panels
- Filter sections
- Drain trays
What happens on the day
Our technicians bring everything the work needs, including protection sheets, the right tools and access kit. You only need to give us clear access and switch off what needs to be off. The visit takes from a few hours for a compact unit to a day or more for a large one. In Tolworth, as across London, we typically work overnight or at weekends and hand the site back ready to open.
- We survey the unit from pictures or on site and agree what’s included.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- Standing water and slime come out of the tray and the drain is checked.
- A TR19® certificate and photo report follow the clean.
How to prepare
- Tell us about site rules, permits or sign-in
- Move anything stored near the system
- Make sure equipment near the work can be switched off and left to cool
Ask for a quote
If you need AHU cleaning in Tolworth, call 0345 646 2711, or email photos. Let us know the site type and the opening hours, and send photos or your last report if you can. We typically send a fixed quote within one working day.