Surrey · Air handling unit cleaning
Air handling unit cleaning in Wotton, Surrey
AHU cleaning for Wotton and the surrounding area: diagnosis first, then a fixed quote, the work and a report with photos. Call for a fixed quote.
- Units needing a clean before a new tenant or handover
- Dirty filters cutting the airflow
- Units that have only ever had filter changes
About our AHU cleaning in Wotton
Where a building in Wotton has had little more than filter changes, there may be dirt on the coils, fan and casing that nobody has looked at. A full AHU clean takes in the whole unit. If you’re dealing with blocked condensate drains and slimy trays and rooms that smell stuffy when the system runs, we can help, from internal panels, dampers and louvres and supply and extract fans onwards.
For a building in or near Wotton, access is agreed in advance and the visit is planned around the journey, and the ventilation is inspected, cleaned and recorded the same as anywhere.
We’ve been trading since 2009, and we’re 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.
- Place
- Wotton (RH5)
- Wider area
- Surrey
- Paperwork
- Report and pictures after the visit
- Quote
- Fixed quote, normally within a working day
- Hours
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Aftercare tips
No system stays clean for ever, but care slows the build-up. Our tips:
- Check the drain tray is emptying during routine visits
- Store the TR19 paperwork where auditors can find it
- Keep inspection doors on the unit in good order
- Change filters on schedule and log each change
If the ductwork hasn’t been cleaned, consider it next. Cleaning the unit and ducts together gives the best result, and we can survey both.
Check drain trays and condensate drains during routine maintenance. Catching a slow drain early stops standing water building up.
The process
Every visit runs to the same pattern: protect the area, isolate whatever needs isolating, do the work, clear away and hand over the paperwork. The visit itself takes from a few hours for a compact unit to a day or more for a large one. If you can send pictures, we can arrive in Wotton knowing what to expect.
- First the unit is surveyed, from pictures or a visit, and the scope agreed.
- The unit is shut down with your site team and the area protected.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- We clean out the drain tray and make sure it drains.
- We close up the unit and send the certificate and before and after photos.
Before we arrive
- Dig out any earlier paperwork for the system
- Agree a time when the area can be out of use
- Arrange a key holder or contact on site
Ask for a quote
The quickest way to a quote is to send photos: 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.
Related advice
Landlords, agents and facilities managers
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements and we’ll come back with a fixed quote.
Multi-site operators often want one contractor and one number. We cover South East England and London, so a run of sites can go into one programme and kept on a regular cycle.
Ventilation in Wotton buildings
About 23 miles out from central London, Wotton is part of the South East area we work across. A survey and a fixed quote come first, then the visit at a time that suits you.
For buildings in and around Wotton, TR19® Air cleaning starts with an inspection.
Wotton is about 3 miles south-west of Dorking, in Surrey. From the centre of Wotton 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, from busy centres to quieter spots. There’s also a page for Guildford, roughly 8 miles from Wotton.
Work in RH5 is surveyed, quoted and booked the same way as anywhere else. Whether your site is on Sheephouse Green, Sheephouse Lane and Hollow Lane or anywhere close by, we can help. We also cover Westcott (1 mile north-east), Ranmore Common (2 miles north-east), Mid Holmwood (3 miles east), Dorking (3 miles north-east) and North Holmwood (3 miles east). Larger places within reach include Guildford (8 miles west), Woking (11 miles north-west), Epsom (10 miles north-east), Horley (10 miles east), Redhill (10 miles east) and Ewell (11 miles north-east).
What’s near Wotton
Typical jobs here are in premises near Wotton and Abinger Commons. The closest station to Wotton is Gomshall station, roughly 2.4 miles west of the centre. Nearby you will also find Abinger Castle (1.2 miles south-west) and Mesolithic Museum (1.3 miles south-west). Not far away are Silent Pool and Leith Hill.
Why act early in Wotton
A clogged coil or dirty fan makes the unit work harder for the same airflow. The result is extra wear and a building that doesn’t feel as comfortable, and a clean on your terms beats a breakdown on nobody’s. A fault that closes a site in a village like Wotton affects everyone who depends on it.
Several systems or sites on one quote can make for a more efficient booking. Mention every system or site you need covered, and you’ll get one fixed quote.
What you get with us
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Every visit written up, with pictures
- One number for every site across the South East and London
- We are fully insured
Read our cost guide or our accreditations.
When something else is needed
Not every problem is solved by AHU cleaning, and we’ll tell you before work begins. It does not solve:
- Mechanical faults with motors, belts or bearings
- Damaged coils beyond cleaning
- Ductwork downstream of the unit, which is a separate clean
If in doubt, phone us on 0345 646 2711 or send us an email and we will say what we think before you book.
Where we work
- Supply and extract fans
- Dampers and louvres
- Filter sections
- Drain trays
- Heating and cooling coils
- Internal panels
Common questions in Wotton
Do you offer AHU cleaning in Wotton?
Yes, we work in Wotton and the places around it. Get in touch with the details and we’ll arrange a survey.
Will you come out to Wotton?
Yes, we work in villages as well as towns, and Wotton is covered. Let us know about access, parking and anything unusual about getting there when you book.
How often should an air handling unit be cleaned?
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.
How long does it take to clean an air handling unit?
Cleaning takes anything from half a day for one small unit to several shifts for a plant room full of them. Bigger units can be phased, so phone us on 0345 646 2711, or send details by email to talk it through.
Do you offer emergency callouts?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line, and we’ll advise on what to do next.
Do you do ventilation duct cleaning too?
Yes, the ductwork, grilles and diffusers the unit serves. The survey shows whether the ducts need cleaning now.
How far ahead should we book?
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 if it’s an emergency, call us any time.
How do you keep the site clean during the work?
We cover floors and nearby surfaces with sheeting before we start, and waste is contained as we go. Before we leave, we tidy up and clean down.
More services for Wotton
What we are called out for in Wotton
An overdue filter loads up with dirt, cutting airflow and sometimes letting dirty air bypass them altogether. After that, the coils and fan collect what the filter should have caught.
Look out for any of the following:
- Units needing a clean before a new tenant or handover
- Condensate trays that won’t empty
- Intake sections clogged with outdoor debris
- Coils clogged with dust and debris
Wherever a school like The Priory CofE Voluntary Aided School has ducted ventilation, a half-term visit keeps the work out of lesson time.
What to look for in a quote
- Whether the price is fixed
- How VAT is shown on the quote
- What hours they’ll be on site
- Whether they’re fully insured
Staff cleaning versus specialist work
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, they should report it rather than try to fix it. We will take a look and give you a fixed quote.
In-house cleaning and specialist cleaning do different jobs. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but they don’t reach the grease that builds up further in. That part needs specialist access and equipment.