Oxfordshire · Air handling unit cleaning
Air handling unit cleaning in Horley, Oxfordshire
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for Horley, with a survey first and a report with pictures at the end. Ask us for a fixed quote.
- Rooms that smell stuffy when the system runs
- Blocked condensate drains and slimy trays
- Units needing a clean before a new tenant or handover
Why it’s worth doing now in Horley
A slimy drain tray only gets worse. Leave it and you risk overflows, leaks into the space below and odours carried round the building. Dealing with it early keeps the clean straightforward. Our emergency line runs 24/7, but a planned visit to Horley is calmer for everyone.
No two sites are the same, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all play a part.
Why Horley businesses choose us
- CHAS and SafeContractor accredited, with ISO 9001
- Trading since 2009
- Every job surveyed first
- Each visit written up, with pictures
Take a look at how cleaning jobs are priced or our accreditations.
About our AHU cleaning in Horley
All the building’s air passes through the fan, so dirt on the impeller and housing gets spread around. Fan, housing and the surrounding panels are cleaned as part of the job, once the unit has been shut down and isolated. The work covers supply and extract fans, internal panels and dampers and louvres, and common reasons people get in touch are condensate trays that won’t empty and leaves and litter drawn into the unit.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, where filters and drain trays get forgotten.
Nothing is signed off by word of mouth: a written report, dated and illustrated with pictures, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. Any parts we couldn’t reach are recorded on it too.
- Where
- Horley (OX15)
- Wider area
- Oxfordshire
- Reporting
- Written report with pictures
- Quotes
- Fixed quote, usually within a working day
- Hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
Ventilation in Horley buildings
For Horley, the closest hospital is Horton General Hospital, roughly 3.6 miles south-east. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.
Healthcare buildings such as Horton General Hospital, about 3.6 miles south-east, depend on their ventilation; if you manage a surgery, clinic or care home near Horley, yours matters too.
Horley is about 3 miles north-west of Banbury, in Oxfordshire. We carry out AHU cleaning for commercial premises of every kind in Horley and the rest of Oxfordshire. Our Oxfordshire coverage runs to 443 places, Horley among them. There’s also a page for Oxford, about 25 miles away.
We cover every part of the OX15 postcode area for AHU cleaning and the roads nearby. AHU cleaning is available to premises on Manor Orchard and Little Lane and nearby roads. Nearby, we also carry out AHU cleaning in Wroxton (1 mile south), Drayton (2 miles south-east), Neithrop (3 miles south-east) and Ruscote (3 miles south-east). We also work in nearby towns such as Banbury (3 miles south-east), Chipping Norton (12 miles south-west), Grimsbury (4 miles south-east), Bloxham (5 miles south), Bodicote (5 miles south-east) and Upper Heyford (13 miles south-east).
Local landmarks in Horley
Typical jobs here are in premises near Red Lion pub and the streets around them. For rail, the closest station is Banbury station, about 3.5 miles south-east of the centre. Nearby you will also find Horton General Hospital (3.6 miles south-east) and Castle Quay Shopping Centre (3.2 miles south-east). For a walk, there’s Crouch Hill.
What affects the cost of AHU cleaning
The price is fixed before any work begins. It’s based on:
- How big the system is
- Site rules, permits and inductions
- Where the site is and how we reach it
- The number of sites or systems
You will not find a price list here, because each job is priced on what it involves. For a fixed quote, give us a ring on 0345 646 2711 or send us an email, and we will explain what it covers.
Helping us quote
To help us quote quickly, send us:
- Close-ups of filters, grilles, hatches or access panels
- The paperwork from the last visit, if you have it
- The postcode and the type of business
- Your opening hours and when the area is out of use
Some systems can be priced from pictures; others need a survey. Big or complicated sites, and systems that are hard to see in photos, get a survey first. Either way, the quote is fixed before any work is booked.
What your team can do, and what needs us
Your own staff can handle the daily basics: wiping canopies, washing grease filters and recording it in a log. What they cannot safely do is clean inside the ductwork, the fan or the risers, and that is where we come in.
Good housekeeping makes our visits easier, not unnecessary. Clean filters and tidy surfaces slow the build-up, but hidden parts of the system still need specialist attention.
What else we do in Horley
The process
We turn up at the time agreed with you, which is often after service, overnight or at a weekend. Equipment that has to be off is switched off and allowed to cool first, and the area around the work is covered and protected. On site, it takes half a day to a full day per unit, with large plant planned over several shifts. Seeing the system in pictures first means the trip to Horley can be planned properly.
- 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
- Let us know about parking and loading
- Have your last certificate or report to hand
- Name a contact who can let us in at the agreed time
Getting a quote
Quoting starts with a diagnosis, from your photos and details or, where that is not enough, a survey on site. After that, you get a fixed price for the work so you know the cost before any work starts.
Advice
Questions from Horley
Is Horley in your area for AHU cleaning?
Yes, we work in Horley and the places around it. Get in touch with the details and we will arrange a survey.
Can you work in Horley outside opening hours?
Yes, evening, overnight and weekend work is normal for us. Your customers, staff or residents in Horley needn’t be disturbed. Let us know the hours you are closed and we’ll book within them.
Do you need to switch the unit off?
Yes. We cannot clean a running unit, so it’s switched off and made safe first. We agree the timing with your site team.
What do you need from me for a quote?
Just the basics: where it is, what kind of site, when it’s open and the access. Photos and the last report help too. Then ring 0345 646 2711 or drop us a line.
How much notice do you need?
That depends on the slot you want and the size of the job. Mention your preferred dates with your enquiry, and if it’s an emergency, call us any time.
What is TR19?
TR19® is BESA’s specification for ventilation hygiene. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.
What do you clean inside the unit?
Filters, coils, drain trays, the fan and the internal surfaces are all covered. Filters are cleaned or changed as agreed in the quote.
Can we book visits on a schedule?
Yes. Scheduled maintenance plans are part of what we do, set at the interval the system needs. The report from each visit recommends the next date.
When it’s something else
An honest diagnosis matters more to us than a booking, so here’s what this work can’t put right:
- Breakdowns that need a mechanical engineer
- Dirty ducts beyond the unit itself
- Building management system faults
If in doubt, phone us on 0345 646 2711, or email photos and we will say what we think.
Where we work
- Drain trays
- Filter sections
- Internal panels
- Heating and cooling coils
- Dampers and louvres
- Supply and extract fans
Looking after it afterwards
Simple habits between visits make a real difference. Our advice:
- Book the next check in line with the report
- Make sure the unit’s access doors open easily
- Keep filter changes on time and recorded
- File each AHU report in the maintenance log
Photos in the report cover the filters, coils, drain tray, fan and casing, along with anything we couldn’t reach. It also notes faults we spotted, such as damaged panels or a blocked drain.
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.
Do you need AHU cleaning in Horley?
Cooling coils create condensation, and that water has to go somewhere. A blocked outlet or a badly sloped tray leaves standing water, and slime and smells soon follow.
If you notice any of these, it’s worth a diagnosis:
- Dirty coils holding back the airflow
- Air handling units due a clean after building work
- Rooms that smell stuffy when the system runs
- Intake sections clogged with outdoor debris
School buildings such as North Oxfordshire Academy are normally done in the holidays, so classrooms aren’t disturbed.
Before booking anyone
- How VAT is shown on the quote
- What records you’ll receive afterwards
- Whether the price is fixed
- What hours they’ll be on site