Oxfordshire · Air handling unit cleaning
Stonor AHU cleaning
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Stonor, surveyed first and signed off with a written report and pictures. Call for a fixed quote.
- Intake sections clogged with outdoor debris
- Dirty coils holding back the airflow
- Dirty filters cutting the airflow
How we handle AHU cleaning in Stonor
Where a building in Stonor has had little more than filter changes, the coils, fan and casing can be carrying far more dirt than anyone has seen. A full clean deals with all of it. Typical jobs include stale or musty smells from the ventilation and units needing a clean before a new tenant or handover, across filter sections, supply and extract fans and drain trays.
In a village or hamlet like Stonor, few buildings have mechanical ventilation, but those that do need it inspected and cleaned like any other.
It’s worth checking any contractor’s accreditations. We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, with full insurance on top.
- Where
- Stonor (RG9)
- Region
- Oxfordshire
- Paperwork
- Photo report after every visit
- Price
- A fixed quote up front
- Hours
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
What the work involves, part by part
Drain trays
Standing water in a tray sits right where the air passes. We clean it and report anything about the tray or drain that needs fixing.
Fans and fan sections
Dust on a fan impeller adds weight and wear. A clean fan runs more smoothly.
What we do, step by step
When we arrive, we check the system against the survey or the photos you sent. Anything unexpected is raised with you before we go further. After that, the work takes a single shift for a typical unit, longer for large or heavily soiled ones. Seeing the system in photos first means the trip to Stonor can be planned properly.
- First the unit is surveyed, from photos or a visit, and the scope agreed.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- Filters, coils, fan section and casing are cleaned in turn.
- Standing water and slime come out of the tray and the drain is checked.
- You get a TR19® certificate and a photo report.
Getting ready for the visit
- Name a contact who can let us in at the agreed time
- Have your last certificate or report to hand
- Agree a time when the area can be out of use
Ask for a quote
Quotes are quick. Call or email with a few details and you’ll usually have a fixed price within one working day. If we need to see the system first, we book a survey around your hours.
Read more
Leave it or put it right?
A clean unit feeds cleaner air into the ductwork, so the whole system stays cleaner for longer. It also means the next inspection has less to find. Planning a trip to Stonor ahead is easier for everyone than a rushed one.
We do not list prices on the website, because the cost depends on the site in front of us. Call for a fixed quote, and we will explain what it covers.
Why book with us
- Trading since 2009
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Accredited under CHAS and SafeContractor, with ISO 9001
- Every job surveyed first
Read how cleaning jobs are priced or our accreditations and certificates.
For landlords and multi-site operators
Keeping records across a portfolio is half the battle. Every visit ends with a dated report and pictures, so you can show an insurer or inspector what was done at each site.
We work for landlords, managing agents and facilities managers as well as the people running the site. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we are happy to quote for all of it.
Signs you need AHU cleaning in Stonor
Wherever there’s a cooling coil, there’s condensate. If the drain tray outlet blocks or the tray doesn’t fall properly, water stands in it, and that’s where slime and odours start.
Signs it’s time to call us include:
- Filters that are clogged or overdue
- Condensate trays that will not empty
- Units that have only ever had filter changes
- Leaves and litter drawn into the unit
Around Stonor, as anywhere, ventilation cleaning begins with an inspection.
Questions to ask before you book
- When they can work, and whether that’s outside your opening hours
- Whether they’re fully insured
- Whether inaccessible sections are listed on the report
- Whether a survey comes first
More services for Stonor
What affects the quote in Stonor
Your quote is based on your site. We take into account:
- Access, including roofs, risers and ceiling voids
- Travel, parking and unloading
- How big the system is
- Whether it’s a one-off visit or part of a schedule
Every site is different, so each one gets its own fixed quote. The size of the job, how we reach it, its condition and the working hours all play a part.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in touch, it helps to send:
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- Photos showing the whole system and its surroundings
- Your last certificate, test record or report
Here’s what helps us quote: the address, the type of site and when it’s open, a few pictures and any previous report or certificate. Once you have those, phone us on 0345 646 2711 or email us.
Your questions about AHU cleaning in Stonor
Do you work at weekends in Stonor?
Yes, out-of-hours work is a big part of what we do. The site is handed back ready to open. When you give us a ring on 0345 646 2711 or drop us a line, mention when the site is quiet.
Is Stonor within the area you cover?
Yes, smaller places are covered as well as towns. Just mention lanes, gates or anything else about the site when you book.
How often should an air handling unit be cleaned?
Inspection under TR19® Air decides it. A hard-working unit, or one serving a hospital or care home, may need cleaning more often.
What’s TR19?
TR19® is BESA’s specification for ventilation hygiene. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
What happens if you can’t reach some of it?
The report shows them clearly. In ductwork, new access panels are often the answer, and we can fit those.
Can you clean the ducts connected to the AHU?
Yes, supply and extract ducts, grilles and diffusers. We will tell you after the survey whether the ducts need it.
Is a quote from pictures possible?
Often, yes. With good photos, the site type and your last report, we can price many jobs. Larger or hidden systems need a survey on site first.
Do you work with multi-site operators?
Yes. You deal with one contact for every site in our area, with visits on a regular schedule.
Keeping the system healthy
No system stays clean for ever, but care slows the build-up. Our tips:
- Make sure condensate is draining away
- Don’t store bins or materials near the intake
- Stick to the filter change plan
- Report water on the plant room floor
The ducts served by the unit may need attention too. Cleaning the unit and ducts together gives the best result, and we can survey both.
Make the drain tray part of every maintenance visit. A drain that’s cleared early never gets to the slime stage.
Stonor buildings and their air
We cover Stonor, about 37 miles from central London, as part of our work across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site.
In Stonor, supply and extract ducts are cleaned along with the units that serve them.
Stonor is about 5 miles north of Henley-on-Thames, in Oxfordshire. If you need AHU cleaning in Stonor, please call us on 0345 646 2711 or email us for a fixed quote. Our area covers London and the South East, including Stonor. We cover 443 places across Oxfordshire, large and small. Our Reading page covers sites nearby, about 11 miles away.
All of RG9 is covered for AHU cleaning, from the main roads to the quietest streets. Close by, we work in Turville Heath (1 mile north-east), Northend (2 miles north), Christmas Common (2 miles north-west), Cookley Green (3 miles west) and Howe Hill (3 miles north-west). We also work in nearby towns such as Didcot (13 miles west), Thame (10 miles north), Henley-on-Thames (5 miles south), Benson (7 miles west), Chinnor (7 miles north) and Tilehurst (11 miles south-west).
Local landmarks in Stonor
Locally, jobs take us to businesses close to The Crown Inn Public House, among other places. The countryside around Stonor includes Warburg Nature Reserve and Bald Hill.