Surrey · Air handling unit cleaning
AHU Cleaning in Tadworth
Air handling unit cleaning for commercial sites in Tadworth and across Surrey. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Units that have only ever had filter changes
- Drain trays holding standing water
- Plant that needs cleaning after a refit
The process
The visit has three parts: set-up, the treatment itself and the sign-off. Set-up means sheeting and making equipment safe, and the sign-off is a written report with photos. The middle part takes longest, and that takes a single shift for a typical unit, longer for large or heavily soiled ones. Because the survey comes first, a visit to Tadworth can typically be finished without a second trip.
- 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.
- We finish with the fan section and the drain tray.
- After pictures are taken and the certificate issued.
How to prepare
- Clear loose items from the work area
- Let us know how we reach the system, including roofs, risers and plant rooms
- Tell us the best time to work, such as after service or at a weekend
How to get a quote
Here’s what helps us quote: the address, the type of site and when it’s open, a few photos and the last certificate or report, if there is one. Then call us on 0345 646 2711, or email photos.
Advice
AHU cleaning in Tadworth, done properly
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 internal panels, heating and cooling coils and dampers and louvres, and common reasons people get in touch are odours coming through the supply air and filters that are clogged or overdue.
In a smaller place like Tadworth, 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.
Nothing is signed off by word of mouth: a dated report with pictures of the work, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. It shows what was done and what, if anything, couldn’t be reached.
- Location
- Tadworth (KT20, KT18)
- Region
- Surrey
- Paperwork
- Photo report after every visit
- Price
- A fixed price before work begins
- Hours
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
Common problems we fix in Tadworth
Planned maintenance often covers belts, motors and filters but not cleaning. So a unit can be well maintained and still dirty.
Clients typically contact us after spotting one of these:
- Air handling units due a clean after building work
- Drain trays holding standing water
- Dirty fans and fan housings
- Air handling units never cleaned inside
For workplaces around Tadworth station with mechanical ventilation, cleaning can be done in the evening or at weekends.
Comparing quotes
- What hours they’ll be on site
- Whether VAT is included
- Exactly which parts of the system are covered
- Proof of accreditation you can verify
Leave it or put it right?
Stuffy rooms and stale smells in a building in Tadworth can sometimes be traced back to the AHU. Cleaning it deals with the cause rather than the symptom. You choose the date of a planned visit, and a breakdown never asks.
What you pay depends on how big the system is, the condition it’s in and how easy it is to reach. We give you a fixed price before any work starts, so you know where you stand.
Why us?
- Photo reports with every job
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Evenings, overnight and weekends, plus 24/7 emergency callout
- CHAS, SafeContractor and ISO 9001
Also near Tadworth
Other services in Tadworth
FAQs for Tadworth
Do you work at weekends in Tadworth?
Yes, we can come after you close and finish before you open. It means the site in Tadworth keeps running as normal. When you give us a ring on 0345 646 2711, or email photos, mention when the site is quiet.
Do you cover smaller places like Tadworth?
Yes. Tadworth is within the area we cover across London and the South East. Photos of the system and directions to the site help us plan the visit.
How often do AHUs need cleaning?
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.
Is there a survey before the work?
Yes. For many sites, pictures and a few details are enough, while bigger or harder-to-see systems are surveyed on site.
Do you have a 24/7 line?
Yes. There’s a 24/7 emergency line for anything that can’t wait until a planned visit. Ring any time and tell us what’s happened.
What happens to the waste?
Waste is contained during the work and removed when we leave, including grease, debris and dirty water. We don’t leave it behind.
What information do you need?
The site address, the type of premises and your opening hours, plus photos of the system and your last certificate or report if you have one.
What accreditations do you have?
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 carry full insurance.
When it’s something else
A few issues sit outside what this work can do:
- The supply and extract ducts, quoted separately
- Controls and BMS settings that run the unit
- Coils that are corroded or leaking and need replacing
If you are not sure, just give us a ring on 0345 646 2711 or drop us a line and we’ll give you a straight answer before you book.
What we work on in Tadworth
- Dampers and louvres
- Filter sections
- Internal panels
- Heating and cooling coils
- Drain trays
- Supply and extract fans
Managing agents and facilities teams in Tadworth
Whether it’s one building or many, you get the same standard: the system surveyed, the price fixed, the visit fitted around trading and everything written up afterwards.
We also work for facilities teams across offices, schools and healthcare across Surrey. Larger estates can be phased building by building to keep disruption down.
Tadworth buildings and their air
There are about 4 schools, colleges and universities and about 9 care, childcare and hospital premises on the FSA’s food hygiene register across Tadworth and its immediate surroundings (about a mile and a half). Where buildings like these have air handling units, filters, coils and drain trays need regular attention. The nearest hospital to Tadworth is Headley Court, about 2 miles west. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. Tadworth, about 15 miles from central London, is within our usual area. A survey and a fixed quote come first, then the visit at a time that suits you.
For schools like Tadworth Primary School, the holidays are the usual time to inspect and clean ventilation. Hospitals such as Headley Court (about 2 miles west) show how much a building can rely on clean ventilation, and smaller healthcare sites near Tadworth are no different.
Tadworth is about 3 miles south-east of Epsom, in Surrey. If you need AHU cleaning in Tadworth, it’s easy to get a fixed quote: please give us a ring on 0345 646 2711 or send us an email. We work across South East England and London, Tadworth included. Tadworth is one of 395 towns, villages and districts in Surrey we cover for commercial clients. For sites nearby, see our London page, about 15 miles away.
Every address in KT20 and KT18 is within our area for AHU cleaning, from the main roads to the quietest streets. Whether your site is on Beatrice Square, High Street and Fairacres or anywhere close by, we can help. Neighbouring places we cover for AHU cleaning include Kingswood (1 mile south-east), Walton on the Hill (1 mile south-west), Lower Kingswood (2 miles south-east), Headley (2 miles south-west) and Mogador (3 miles south). Further out, we also cover Guildford (15 miles west), Woking (15 miles west), Epsom (3 miles north-west), Horley (9 miles south), Redhill (5 miles south-east) and Ewell (4 miles north).
Local landmarks in Tadworth
In Tadworth, that means kitchens and buildings near The Beacon School, Merland Rise Recreational Ground and Inn on the Green, among other places. For rail, the closest station is Tadworth station, about 0.5 miles south-west of the centre. A little further out are The Ashley Centre (2.9 miles north-west) and Headley Court (2 miles west). The countryside around Tadworth includes Colley Hill and Cuddington Meadows.
What your team can do, and what needs us
In-house cleaning and specialist cleaning do different jobs. Wiping filters daily and washing them weekly keeps the visible parts in order, but grease that has passed the filters is out of reach. Reaching it takes a specialist with the right equipment.
Keep a record of what your team does. A simple log of filter washes, wipe-downs and checks shows an inspector that the system is looked after between visits, next to our reports.
What affects the cost of AHU cleaning
The survey tells us what the work involves. We look at:
- The number of sites or systems
- Whether it’s a one-off visit or part of a schedule
- Any permits to work or inductions
- The scale of the work
Every site is different, so each one gets its own fixed quote. Size, access, the condition of the system and when we can work all make a difference.
What to send for a quote
Many jobs can be priced from photos and some basics. Useful things to send:
- Your opening hours and when the area is out of use
- Your last certificate, test record or report
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Close-ups of filters, grilles, hatches or access panels
Some systems can be priced from pictures; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before we start.