Surrey · Air handling unit cleaning
Runfold AHU cleaning
Need AHU cleaning in Runfold? We survey first, send you a fixed quote and work around your opening hours, finishing with a written report and pictures.
- Dirty fans and fan housings
- Units needing a clean before a new tenant or handover
- Coils clogged with dust and debris
Staff cleaning versus specialist work
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. Reaching it takes a specialist with the right equipment.
Keep a record of what your team does. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, alongside our reports.
How we handle AHU cleaning in Runfold
If the units serving a building in Runfold have only had filter changes for years, the coils, fan and casing can be carrying far more dirt than anyone has seen. A full clean deals with all of it. If you have units needing a clean before a new tenant or handover and air handling units with blocked filters, we can help.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, which makes them easy to overlook.
The paperwork matters as much as the work. Each visit is written up with pictures, listing what was done, anything we couldn’t reach and when the next visit is due. Keep it with your fire safety records so it’s ready for an insurer, fire officer or EHO.
- Where
- Runfold (GU10, GU9)
- Wider area
- Surrey
- Reporting
- Photo report after every visit
- Quote
- Fixed quote, usually within a working day
- When we work
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
Runfold: your questions answered
Is Runfold within the area you cover?
Yes, Runfold is part of our area, however small the site. Photos of the system and directions to the site help us plan the visit.
Do you work at weekends in Runfold?
Yes, out-of-hours work is a big part of what we do. The site is handed back ready to open. Your opening times are the first thing we ask for.
What types of premises do you cover?
We work for restaurants, pubs, hotels, schools, colleges, hospitals, care homes, offices and shops, plus food production and leisure sites.
Are you accredited?
Our accreditations are CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
What’s TR19?
TR19® is the BESA specification for keeping ventilation systems clean. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.
What’s included in an AHU clean?
Every section that collects dirt: filters, coils, tray, fan and panels. We confirm the scope after looking at the unit.
Will the ventilation be off while you clean?
Yes. We can’t clean a running unit, so it’s switched off and made safe first. We agree the timing with your site team.
What should I send you?
Just the basics: the address, the site type, your opening hours and how we reach the system. Photos and the last report help too. After that, simply phone us on 0345 646 2711, or send details by email.
The process
On the day, we arrive at the time agreed with you, often in the evening, overnight or at the weekend so the site keeps working. Equipment that has to be off is switched off and allowed to cool before any work starts, and the area around the work is covered and protected. The work itself takes half a day to a full day per unit, with large plant planned over several shifts. Rural roads and tight entrances are worth telling us about before a visit to Runfold.
- First we agree when the unit can be switched off, including evenings or weekends.
- We take before photos of each section of the unit.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- After photos are taken and the certificate issued.
How to prepare
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Dig out any earlier paperwork for the system
- Name a contact who can let us in at the agreed time
Getting a quote
Quoting starts with a diagnosis, from your pictures and details or, where that isn’t enough, a survey on site. Then we send a fixed price so you know the cost before any work starts.
Advice
Also near Runfold
More services for Runfold
Looking after it afterwards
A little care between visits keeps the system in better shape. We recommend:
- Diary the inspection date recommended in the report
- Keep filter changes on time and recorded
- Do not store bins or materials near the intake
- Make sure the unit’s access doors open easily
Keep filter changes on schedule between cleans, because good filters protect everything downstream. Log every change so it’s easy to see when the next is due.
Regular filter changes are the best protection an AHU has. Overloaded filters let more dirt through to the coils and fan.
Why act early in Runfold
A light clean now is simpler than a heavy one later. Years of build-up make the job longer and harder, especially where there’s been moisture. Our emergency line runs 24/7, but a planned visit to Runfold is calmer for everyone.
What you pay depends on how big the system is, the condition it’s in and access to every part of it. You get a fixed price before we start, so there are no surprises.
Why us?
- Fixed quotes from a survey or pictures
- Trading since 2009
- CHAS and SafeContractor accredited, with ISO 9001
- We diagnose before we treat
Take a look at what affects the cost or our accreditations.
Managing agents and facilities teams in Runfold
If you look after several sites, we can schedule visits across all of them on one quote. Every building has its own written report, so records stay tidy.
Records are where multi-site compliance often slips. Each visit produces a dated report with photos, ready to show insurers, fire officers or EHOs.
Runfold buildings and their air
Food Standards Agency data includes about 4 schools, colleges and universities and about 7 care, childcare and hospital premises within 1.5 miles or so of the middle of Runfold. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. At about 35 miles from central London, Runfold sits well inside the area we cover. Visits are booked around your hours, evenings and weekends included.
School buildings such as South Farnham School are usually done in the holidays, so classrooms aren’t disturbed. Around Runfold, as anywhere, ventilation cleaning begins with an inspection.
Runfold is about 2 miles east of Farnham, in Surrey. Whatever kind of site you run in Runfold, we can take on AHU cleaning. We can work out of hours so trading isn’t interrupted. We cover 395 places across Surrey, large and small. Our Guildford page covers sites nearby (8 miles or so).
Every address in GU10 and GU9 is covered for AHU cleaning, from busy streets to back roads. Whether your site is on Greenacres, Crooksbury Road and Compton Way or a nearby road, we can help. Close by, we work in Compton (1 mile west), The Sands (1 mile east), Sandy Cross (1 mile north-east), Badshot Lea (1 mile north) and Seale (2 miles north-east). Further out, we also cover Guildford (8 miles east), Woking (11 miles north-east), Camberley (9 miles north), Frimley (7 miles north), Haslemere (9 miles south) and Cranleigh (13 miles east).
Landmarks near Runfold
Locally, jobs take us to businesses close to Crooksbury Hill and the streets around them. The closest station to Runfold is Farnham station, about 1.7 miles west. Well-known places in the area include Farnham Castle (2.2 miles west) and Museum of Farnham (2.2 miles west). The countryside around Runfold includes Culverswell Hill and Aunt's Pool.
Different parts, different methods
Internal casing and panels
Loose or damaged linings inside a unit can break up into the airstream. We note any we find in the report.
Drain trays
Condensate from the coil drips into a tray beneath it. Standing water and slime are removed and the outlet is checked.
How we price AHU cleaning
Your quote is based on your site. We consider:
- Whether several sites go on one quote
- The condition of the system
- How easy every part is to reach
- Whether it’s a one-off visit or part of a schedule
You won’t find a price list here, because each job is priced on what it involves. Call for a fixed quote, and we’ll explain what it covers.
What to send for a quote
Before you ask for a quote, gather:
- Your opening hours and when the area is out of use
- The site address and the type of premises
- Any symptoms, from odd noises to smells or leaks
- The paperwork from the last visit, if you have it
To help us quote: the address, the type of site and when it’s open, pictures of the system and any previous report or certificate. Once you have those, ring 0345 646 2711 or drop us a line.