Surrey · Air handling unit cleaning
Air handling unit cleaning in Holmbury St Mary, Surrey
Our technicians work in Holmbury St Mary on AHU cleaning. Fixed quotes, work around your opening hours and photo reports as standard.
- Plant that has been serviced but not cleaned
- Intake sections clogged with outdoor debris
- Stale or musty smells from the ventilation
How it works
The visit has three parts: set-up, the treatment itself and the sign-off. Getting ready means protecting surfaces and switching off what needs to be off, and the sign-off is a written report with pictures. The middle part takes longest, which takes one overnight shift for many single units, with bigger plant phased. Pictures of the system and its access let us plan the work in Holmbury St Mary before we set off.
- We survey the unit from pictures or on site and agree what’s included.
- The unit is shut down with your site team and the area protected.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- Standing water and slime come out of the tray and the drain is checked.
- You get a TR19® certificate and a photo report.
Before we arrive
- Tell us about site rules, permits or sign-in
- Let us know about parking and loading
- Move anything stored near the system
How to get a quote
Want a quote for AHU cleaning? Please phone us on 0345 646 2711 or email us with a few details about the site. We’ll explain what we’d do and send a fixed quote before you commit to anything.
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AHU cleaning in Holmbury St Mary
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. If you have air handling units due a clean after building work and dirty coils holding back the airflow, we can put it right.
Work in a small place like Holmbury St Mary starts with agreeing access and timings.
The report is your system’s health record: a dated account with photos of everything we did. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal, ready for your insurer.
- Place
- Holmbury St Mary (RH5)
- Wider area
- Surrey
- Reporting
- Photo report after each visit
- Quotes
- Fixed quote, normally within a working day
- Hours
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
Looking after it afterwards
Aftercare is simple, and it makes the next visit easier:
- Clear leaves and litter away from the intake
- Check the drain tray is emptying during routine visits
- Book the next check in line with the report
- Keep the certificate and photo report with the plant records
The report suggests a date for the next inspection or clean, taking into account how dirty it was. Under TR19® Air the timing is set by inspection and risk, not a fixed calendar.
Change or clean filters on time. Overloaded filters let more dirt through to the coils and fan.
What the work involves, part by part
Internal casing and panels
We open each section through its doors and close them securely when we’re done before the unit is handed back.
Heating and cooling coils
Cooling coils stay damp in use, so dirt on them can turn sticky. The coil and its drain tray are cleaned as one job.
What a clean will not put right
In fairness, there are a few things this work will not fix:
- Problems with the unit’s controls or sensors
- Airflow problems caused by the system’s design
- Faulty motors, drives or bearings
If in doubt, ring 0345 646 2711, or send details by email and we will say what we think before you book.
Where we work
- Drain trays
- Supply and extract fans
- Heating and cooling coils
- Dampers and louvres
- Internal panels
- Filter sections
FAQs for Holmbury St Mary
Do you work in villages like Holmbury St Mary?
Yes, smaller places are covered as well as towns. Let us know about access, parking and anything unusual about getting there when you book.
Can you come to Holmbury St Mary after we close?
Yes, out-of-hours work is a big part of what we do. It means the site in Holmbury St Mary keeps running as normal. When you call 0345 646 2711 or use the quote form, mention when the site is quiet.
Where does the waste go?
Waste is contained during the work and removed when we leave, from grease and debris to used cleaning water. We do not leave it behind.
Can one contract cover all our sites?
Yes. We work across South East England and London, so we can schedule a run of sites on one programme. Each site gets its own report and pictures.
What happens if you can’t reach some of it?
We never leave them off the paperwork. You’ll know exactly which parts weren’t reached and why, and we can quote to improve the access.
Can you price the work without visiting?
In many cases, yes. Photos of the system and the access, plus your opening hours and last report, are often enough. Larger or hidden systems need a survey on site first.
Can you clean the ducts connected to the AHU?
Yes. We clean supply and extract ductwork to TR19® Air as well. Cleaning the unit and ducts together often makes sense, and we can survey both on the same visit.
Do you repair air handling units?
We clean the unit and flag faults rather than repair them, with photos where it helps.
Ventilation in Holmbury St Mary buildings
At about 25 miles from central London, Holmbury St Mary sits well inside the area we cover. Visits are booked around your hours, evenings and weekends included.
For buildings in and around Holmbury St Mary, TR19® Air cleaning starts with an inspection. Wherever a school like Belmont Prep School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Holmbury St Mary is about 5 miles south-west of Dorking, in Surrey. For AHU cleaning in and around Holmbury St Mary, it’s easy to get a fixed quote: please call us on 0345 646 2711 or send us an email. Our area covers London and the South East, Holmbury St Mary included. We cover 395 places across Surrey, from busy centres to quieter spots. For sites nearby, see our Guildford page (8 miles or so).
AHU cleaning in RH5 is surveyed, quoted and booked the same way as anywhere else. Local streets include Horsham Road and Felday Glade, all of which we cover for AHU cleaning. Neighbouring places we cover for AHU cleaning include Pitland Street (1 mile south), Peaslake (1 mile west), Farley Green (3 miles west), Ewhurst (3 miles south) and Ewhurst Green (3 miles south). Larger places within reach include Guildford (8 miles north-west), Woking (11 miles north-west), Epsom (12 miles north-east), Horley (11 miles east), Redhill (11 miles east) and Ewell (13 miles north-east).
Around Holmbury St Mary
Typical jobs here are in premises near Wotton and Abinger Commons, The Volunteer pub and Hurtwood House, among other places. For rail, the closest station is Gomshall station, roughly 2.1 miles north-west of the centre. Other landmarks nearby include Mesolithic Museum (0.7 miles north-east) and Abinger Castle (0.7 miles north-east). Open spaces near Holmbury St Mary include Leith Hill and Silent Pool.
In-house cleaning or a specialist?
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease need training, the right equipment and safe access. Leave those to us.
If your staff spot something between visits, such as dripping grease, a noisy fan, a smell or a filter that won’t come clean, it’s best reported rather than tackled in-house. We will take a look and send you a fixed quote.
Managing agents and facilities teams in Holmbury St Mary
We also work for facilities teams across offices, schools and healthcare in Holmbury St Mary and across Surrey. Work can be phased by floor, building or site around the people who use them.
Keeping records across a portfolio is half the battle. Every visit ends with a dated report and photos, so you can show an insurer or inspector what was done at each site.
What happens if it’s left?
Standing water in a drain tray doesn’t clear itself. 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. It’s simpler to plan the work at Holmbury St Mary now than to arrange it in a hurry later.
Whatever the type of site, the quote works the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we will explain each part.
Why us?
- Fixed quotes, normally within one working day
- A single point of contact for sites across the South East and London
- We diagnose before we treat
- Out-of-hours work and a 24/7 emergency line
Read our cost guide and our accreditations and certificates.