Surrey · Air handling unit cleaning
AHU Cleaning in Wrecclesham
We cover Wrecclesham for cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces. Fixed quotes, work around your opening hours and photo reports on every job.
- Drain trays holding standing water
- Odours coming through the supply air
- Dirty coils holding back the airflow
How we handle AHU cleaning in Wrecclesham
Heating and cooling coils trap dust that gets past the filters. A coated coil restricts airflow and makes the unit work harder. Coils are cleaned carefully, with methods chosen so the fins are not flattened. The work covers internal panels, supply and extract fans and heating and cooling coils, and common reasons people get in touch are debris and leaves in the fresh air intake and dirty coils holding back the airflow.
For a building near Wrecclesham, the visit is planned around how it’s used, and the journey is planned ahead. The method does not change: inspect first, clean, then record what was done.
Duct Doctor has been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Place
- Wrecclesham (GU10, GU9)
- Region
- Surrey
- Paperwork
- Photo report after each visit
- Quotes
- A fixed price before work begins
- Hours
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Wrecclesham questions
Do you work at weekends in Wrecclesham?
Yes, out-of-hours work is a big part of what we do. Your customers, staff or residents in Wrecclesham needn’t be disturbed. Just call 0345 646 2711, or send details by email with your opening times and we’ll plan around them.
Do you do school ventilation cleaning in Wrecclesham in the summer holidays?
Yes, and it’s the easiest time to do it. The FSA’s register shows about 6 schools and colleges with food registrations within roughly a mile and a half of Wrecclesham. Send us your term dates when you phone us on 0345 646 2711 or email us, and we’ll fit the work in.
Does the AHU have to be shut down for cleaning?
Yes. The unit has to be shut down and isolated before it’s opened. We agree the timing with your site team.
Do you cover Wrecclesham?
Yes. Our technicians work in Wrecclesham, within the South East and London area we cover.
Which accreditations do you hold?
We hold CHAS, SafeContractor and ISO 9001, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
Can you look after several sites?
Yes. One number covers all your sites in our area, with visits on a regular schedule.
Can you clean the ducts connected to the AHU?
Yes, the ductwork, grilles and diffusers the unit serves. The survey shows whether the ducts need cleaning now.
Which sectors do you work in?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, as well as food production and leisure sites.
Signs you need AHU cleaning in Wrecclesham
An overdue filter loads up with dirt, cutting airflow and sometimes letting dirty air bypass them altogether. Then the rest of the unit takes the load.
If you notice any of these, it’s worth a diagnosis:
- Air handling units with blocked filters
- Dirty fans and fan housings
- Blocked condensate drains and slimy trays
- Plant that has been serviced but not cleaned
School buildings such as St Peter's CofE Primary School are usually done in the holidays, so classrooms aren’t disturbed.
What to look for in a quote
- How areas they can’t reach will be recorded
- Whether the figure could change on the day
- Whether VAT is included
- How they set the interval to the next visit
Aftercare tips
No system stays clean for ever, but care slows the build-up. A few tips:
- Change filters on schedule and log each change
- Report stiff or damaged access doors
- Store the TR19 paperwork where auditors can find it
- Flag stale or damp smells in the supply air
When we have closed the unit up, it can be restarted with your site team. Keep an eye on the condensate drain over the next few days to make sure it stays clear.
Don’t let leaves, litter or stored materials build up near the fresh air intake. What’s near the intake ends up in the unit.
When something else is needed
An honest diagnosis matters more to us than a booking, so here’s what this work can’t put right:
- Ventilation that was badly designed in the first place
- Dirty ducts beyond the unit itself
- Leaking heating or cooling coils
If you are not sure, just call 0345 646 2711 or use the quote form and we will give you a straight answer before booking.
Where we work
- Dampers and louvres
- Supply and extract fans
- Filter sections
- Heating and cooling coils
- Drain trays
- Internal panels
Staff cleaning versus specialist work
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but hidden parts of the system still need specialist attention.
Away from the kitchen, the in-house job is mainly checking: keeping grilles clear, noting unusual noise or smells and logging filter changes. Cleaning inside ducts and units is specialist work.
Why act early in Wrecclesham
Leave an AHU uncleaned and the dirt doesn’t stay put. It moves on into the ductwork and out into the rooms, which is why the unit and the ducts are best cleaned together. Booking ahead lets us plan the trip to Wrecclesham at a time that suits you.
The price reflects the work, not guesswork. That is why we survey first, from pictures or on site, and the price is agreed before any work starts.
What you get with us
- Every job surveyed first
- Fixed quotes, usually within one working day
- Photo reports with every job
- CHAS and SafeContractor accredited, with ISO 9001
What happens on the day
The first job on site is protection: floors, worktops and anything near the work are covered. After that, the system is made safe and the work begins. The work on site takes one overnight shift for many single units, with bigger plant phased, and we clear up before we go. Your opening hours decide when we come to Wrecclesham, not ours.
- We look at the unit and the plant area during the survey.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
How to prepare
- Agree a time when the area can be out of use
- Let us know about permits to work or site inductions
- Dig out any earlier paperwork for the system
Get a fixed quote
Quoting starts with a diagnosis, from your photos and details or, where that isn’t enough, a survey on site. After that, you get a fixed price for the work so you know the cost before any work starts.
Read more
How we price AHU cleaning
Your quote is based on your site. We take into account:
- Whether it’s a one-off visit or part of a schedule
- Access, including roofs, risers and ceiling voids
- How many systems or sites are involved
- Any permits to work or inductions
Whatever the type of site, the quote works the same way: the size of the job, access, condition and working hours. Call for a fixed quote and we will go through it with you.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in touch, it helps to send:
- Wide pictures of the system and the area around it
- Your last certificate, test record or report
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- The site address and the type of premises
For a fixed quote, ring 0345 646 2711 or use the quote form and tell us the type of site, your opening hours and roughly what the system looks like. A few photos and your last certificate or report help a lot. You will typically have a quote within one working day.
Also near Wrecclesham
Other services in Wrecclesham
AHU cleaning in Wrecclesham: local notes
Going by the FSA’s register, there are about 6 schools, colleges and universities, about 7 caring premises (care homes, nurseries and hospitals) and about 3 hotels and B&Bs serving food across Wrecclesham and its immediate surroundings (about a mile and a half). Buildings like these often rely on mechanical ventilation, which TR19® Air covers. Wrecclesham, about 38 miles from central London, is within our usual area. Visits are booked around your hours, evenings and weekends included.
Around Wrecclesham, as anywhere, ventilation cleaning begins with an inspection.
Wrecclesham is about 1 mile south-west of Farnham, in Surrey. Sites in Wrecclesham get the same service as everywhere we cover: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with photos. Across Surrey, we cover 395 places, Wrecclesham among them. For sites nearby, see our Guildford page (11 miles or so).
Our technicians cover all of the GU10 and GU9 postcode area for AHU cleaning and the roads nearby. AHU cleaning is available to premises on The Street, St Peter's Gardens and School Hill and nearby roads. We also cover Shortheath (1 mile east), Boundstone (1 mile south-east), Rowledge (1 mile south), Holt Pound (1 mile south-west) and Bucks Horn Oak (2 miles south-west). Larger places within reach include Guildford (11 miles east), Woking (13 miles north-east), Camberley (10 miles north), Frimley (9 miles north-east), Haslemere (9 miles south-east) and Cranleigh (15 miles east).
Around Wrecclesham
Around Wrecclesham, our work takes us to kitchens and buildings near Underdown nature reserve, Weydon School and The Royal Oak Public House, among other places. Wrecclesham’s nearest station is Farnham station, about 1.5 miles north-east. A little further out are Farnham Castle (1.6 miles north-east) and Museum of Farnham (1.3 miles north-east). Open spaces near Wrecclesham include Beacon Hill and Aunt's Pool.