Surrey · Air handling unit cleaning
Smallfield AHU cleaning
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for businesses, landlords and public buildings in Smallfield. CHAS, SafeContractor and ISO 9001, and fully insured.
- Odours coming through the supply air
- Plant that needs cleaning after a refit
- Intake sections clogged with outdoor debris
What affects the cost of AHU cleaning
The survey tells us what the work involves. We look at:
- Working hours and out-of-hours timing
- Access, including roofs, risers and ceiling voids
- The number of sites or systems
- Where the site is and how we reach it
Working hours, access and the scale of the site can all change the price. We take each of them into account, and the price is fixed before we start.
What we need to know
To help us quote quickly, please include:
- Your opening hours and when the area is out of use
- A few general shots of the system
- The paperwork from the last visit, if you have it
- Detail shots of panels, filters and grilles
If you need AHU cleaning in Smallfield, call 0345 646 2711, or email photos. Let us know the site type and the opening hours, plus pictures or the previous report if they’re to hand. A fixed quote normally follows within one working day.
AHU cleaning in Smallfield
An air handling unit is the heart of a building’s ventilation: air is pulled in, filtered, conditioned and sent out through the ducts. Anything that collects inside the unit can end up in the rooms it serves, so cleaning the unit matters as much as cleaning the ducts. If you have plant that needs cleaning after a refit and dust built up on fan impellers, we can help.
Around a place like Smallfield, ventilation systems tend to be in schools, surgeries, care homes and workplaces. Smaller systems still gather dust and need inspecting.
Think of the report as the system’s health record: a dated account with photos of everything we did. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal and sits alongside the report.
- Where
- Smallfield (RH6)
- Wider area
- Surrey
- Paperwork
- Written report with photos
- Quote
- Fixed quote, normally within a working day
- Hours
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
Common problems we fix in Smallfield
No filter stops everything. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
Look out for these warning signs:
- Fan sections that haven’t been cleaned in years
- Stale or musty smells from the ventilation
- Dirty filters cutting the airflow
- Coils clogged with dust and debris
Wherever a school like Burstow Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
What your quote should include
- Whether a written report and photos are included
- Whether they’re fully insured
- Whether the price is fixed
- What happens if part of the system can’t be accessed
Common questions in Smallfield
Is Smallfield in your area for AHU cleaning?
Yes, Smallfield is covered. You can call 0345 646 2711 or email us and tell us what needs doing.
Do you cover smaller places like Smallfield?
Yes, we work in villages as well as towns, and Smallfield is covered. Photos of the system and directions to the site help us plan the visit.
Which accreditations do you hold?
BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001. We are fully insured and have been trading since 2009.
Do you survey before quoting?
Yes, always. Diagnosis comes before treatment: the survey tells us what the system needs and how to reach it and the fixed quote is built on it.
How much notice do you need?
That depends on the slot you want and the size of the job. Tell us your preferred dates when you ask for a quote, and if it’s an emergency, call us any time.
Where does the waste go?
Anything we remove is contained as we work and taken away with us, from grease and debris to used cleaning water. We don’t leave it behind.
Are you insured?
Yes, fully. We also hold CHAS and SafeContractor for clients who vet their contractors.
How often should an air handling unit be cleaned?
TR19® Air takes a risk-based approach, so it depends on inspection rather than a fixed interval. We recommend a next date in each report.
The process
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. Most of the time goes on the work itself, and that takes anything from half a day for one small unit to several shifts for a plant room full of them. Tell us when your site near Smallfield is quiet and the visit will be booked for then.
- First we agree when the unit can be switched off, including evenings or weekends.
- Before cleaning, each section is photographed.
- We work through the unit from the intake to the outlet.
- We finish with the fan section and the drain tray.
- We take after photos and issue the certificate and report.
Getting ready for the visit
- Mention any parking or loading restrictions
- Let us know about permits to work or site inductions
- Let us know how we reach the system, including roofs, risers and plant rooms
Ask for a quote
Getting a quote doesn’t take long. Send a few details and photos, and we typically reply with a fixed quote within one working day. If we need to see the system first, we book a survey around your hours.
Read more
Different parts, different methods
Heating and cooling coils
A dirty coil holds back the air and makes heating and cooling less effective. Cleaning restores the open path through the fins.
Internal casing and panels
Loose or damaged linings inside a unit can break up into the airstream. Anything like that is recorded with photos.
What a clean won’t put right
AHU cleaning cannot fix everything, and we’ll tell you before any work starts. It does not solve:
- Ductwork downstream of the unit, which is a separate clean
- Ventilation that was badly designed in the first place
- Leaking heating or cooling coils
If you’re not sure, just give us a ring on 0345 646 2711 or drop us a line and we will give you a straight answer before booking.
Where we work
- Dampers and louvres
- Heating and cooling coils
- Supply and extract fans
- Filter sections
- Internal panels
- Drain trays
Managing agents and facilities teams in Smallfield
We also work for facilities teams across offices, schools and healthcare in Smallfield and across Surrey. Larger estates can be phased building by building around the people who use them.
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. Where responsibility is shared, records matter even more.
Smallfield buildings and their air
About 3.8 miles north-west of Smallfield is East Surrey Hospital, the nearest hospital. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. We cover Smallfield, about 23 miles from central London, as part of our work across London and the South East. The visit is fixed around your opening hours, not ours.
Healthcare ventilation, from large hospitals like East Surrey Hospital (about 3.8 miles north-west) to small clinics, depends on clean filters, coils and ducts.
Smallfield is about 2 miles east of Horley, in Surrey. Whatever kind of site you run in Smallfield, we can take on AHU cleaning. We can work out of hours so trading is not interrupted. Across Surrey, we cover 395 places, Smallfield among them. Guildford is in our area too, around 20 miles away.
Work in RH6 follows the same survey, fixed quote and written report as everywhere else we cover. Whether your site is on Churchill Road, Orchard Road and Tudor Close or anywhere close by, we can help. Nearby, we also carry out AHU cleaning in Outwood (1 mile north), Burstow (1 mile south-west), Keeper's Corner (1 mile south), Fernhill (2 miles south-west) and Shipley Bridge (2 miles south-west). We also work in nearby towns such as Epsom (13 miles north-west), Redhill (5 miles north-west), Ewell (14 miles north-west), Reigate (6 miles north-west), Caterham (8 miles north) and Dorking (10 miles north-west).
What’s near Smallfield
Around Smallfield, our work takes us to kitchens and buildings near Oakwood School and Plough and Furrow pub. Smallfield’s nearest station is Horley station, about 2 miles west of the centre. Other landmarks nearby include Bletchingley Castle (4.5 miles north) and Effingham Park Motor Museum (2.5 miles south-east). Open spaces near Smallfield include Hedgecourt Lake.
Towns and villages near Smallfield
Also in Smallfield
Leave it or put it right?
A slimy drain tray only gets worse. Leave it and you risk overflows, leaks into the space below and odours carried round the building. Clearing it now is a much smaller job. It’s better to plan the work at a site near Smallfield than wait for a failure.
Whatever the type of site, the quote works the same way: how much there is, how we reach it, what state it’s in and when we can work. Call for a fixed quote and we will explain each part.
What you get with us
- Fully insured
- Evenings, overnight and weekends, plus 24/7 emergency callout
- A fixed price before any work starts
- Ventilation hygiene specialists since 2009
See what affects the cost and our accreditations.