Surrey · Air handling unit cleaning
Westhumble AHU cleaning
AHU cleaning in Westhumble, surveyed first and signed off with a written report and photos. Ask us for a fixed quote.
- Coils clogged with dust and debris
- Plant that has been serviced but not cleaned
- Stale or musty smells from the ventilation
In-house cleaning or a specialist?
Keep a record of what your team does. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, next to our reports.
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. What they can’t safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
About our AHU cleaning in Westhumble
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. Coils are cleaned carefully, with methods chosen so the fins aren’t flattened. If you’re dealing with stale or musty smells from the ventilation and plant that needs cleaning after a refit, we can put it right, from filter sections, dampers and louvres and supply and extract fans onwards.
For a building in or near Westhumble, access is agreed in advance and the visit is planned around the journey.
Every visit ends with a written report and pictures, so you have a record of what was done and when. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Place
- Westhumble (RH5)
- Region
- Surrey
- Reporting
- Written report with photos
- Quotes
- A fixed price before work begins
- Working hours
- Overnight and weekend work, 24/7 emergency callout
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What we’re called out for in Westhumble
No filter stops everything. The fine dust that passes the filters lands on the coils, the fan and the internal panels, a little more each month.
Any of these means the system needs a check-up:
- Rooms that smell stuffy when the system runs
- Air handling units never cleaned inside
- Condensate trays that will not empty
- Debris and leaves in the fresh air intake
Healthcare ventilation, from large hospitals like Headley Court (about 3.6 miles north-east) to small clinics, depends on clean filters, coils and ducts.
What your quote should include
- Exactly which parts of the system are covered
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- What records you’ll receive afterwards
- Whether VAT is included
For landlords and multi-site operators
Records are where multi-site compliance often slips. Every visit ends with a dated report and photos, ready to show insurers, fire officers or EHOs.
Whether it’s one building or many, the standard is the same: diagnosis, a fixed price, work booked around your hours and a written report with photos.
FAQs for Westhumble
Can you get to a site in Westhumble?
Yes. Westhumble is within the area we cover across London and the South East. The journey is planned ahead, so a few details about the route help.
Can the work in Westhumble be done at night or at weekends?
Yes, out-of-hours work is a big part of what we do. Your customers, staff or residents in Westhumble needn’t be disturbed. When you ring 0345 646 2711 or drop us a line, mention when the site is quiet.
How much does AHU cleaning cost in Westhumble?
The cost depends on the size of the system, its condition, access and timing. Call for a fixed quote, usually ready within one working day.
Can you come out in an emergency?
Yes, any time. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line, and we’ll advise on what to do next.
Can you price the work without visiting?
Often, 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.
What information do you need?
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 give us a ring on 0345 646 2711, or send details by email.
Do you look at the system first?
Yes, every time. We diagnose before we treat: the survey tells us what the system needs and how to reach it and the fixed quote is built on it.
Which accreditations do you hold?
CHAS, SafeContractor, ISO 9001 and BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. We’ve been trading since 2009 and we’re fully insured.
Ventilation in Westhumble buildings
There are about 3 schools, colleges and universities and about 4 hotels and B&Bs on the FSA’s food hygiene register within 1.5 miles or so of the middle of Westhumble. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. Headley Court is the nearest hospital, about 3.6 miles north-east of Westhumble. Clean air matters most where people are unwell, and that is as true in a care home as in a hospital. At about 20 miles from central London, Westhumble sits well inside the area we cover. Evening, overnight and weekend visits are all possible.
If you run an office near Box Hill & Westhumble station, its supply ductwork can gather dust for years before anyone looks inside. If you manage a school such as The Ashcombe School, ventilation cleaning is best booked for the holidays.
Westhumble is about 2 miles north of Dorking, in Surrey. We carry out AHU cleaning for businesses, landlords and public buildings in Westhumble and the rest of Surrey. 395 places in Surrey are on our list, large and small. Our Guildford page covers sites nearby (10 miles or so).
All of RH5 is within our area for AHU cleaning, from the main roads to the quietest streets. AHU cleaning is available to premises on Adlers Lane, Chapel Lane and Burney Road and the roads around them. Nearby, we also carry out AHU cleaning in Pixham (1 mile south-east), Mickleham (1 mile north-east), Ranmore Common (2 miles south-west), Dorking (2 miles south) and Westcott (2 miles south-west). Within a short drive, we also cover Guildford (10 miles west), Woking (11 miles north-west), Epsom (6 miles north-east), Horley (9 miles south-east), Redhill (7 miles east) and Ewell (8 miles north-east).
What’s near Westhumble
Typical jobs here are in premises near Norbury Park, Stepping Stones pub and Pippbrook House and the streets around them. There’s a railway station in Westhumble itself: Box Hill & Westhumble station. Well-known places in the area include Headley Court (3.6 miles north-east) and Betchworth Castle (1.9 miles south-east). Not far away are Box Hill and Reigate Heath.
Part by part
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.
Drain trays
Condensate from the coil drips into a tray beneath it. Standing water and slime are removed and the outlet is checked.
The process
Before we leave, we walk the area with whoever is on site. Anything we couldn’t reach or that needs attention is pointed out there and then, and the same goes into the written report. All told, the work takes half a day to a full day per unit, with large plant planned over several shifts. The timing of a visit to Westhumble is set by you, and the travel is our side of the planning.
- First we agree when the unit can be switched off, including evenings or weekends.
- We take before pictures of each section of the unit.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- The fan and drain tray are cleaned and the drain checked.
- After photos are taken and the certificate issued.
Preparing for the visit
- Tell us where we can park and unload
- Clear the space around the work
- Have your last certificate or report to hand
How to get a quote
Some systems can be priced from pictures; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before any work starts.
Related advice
Between visits
Looking after the system between visits is straightforward, and it helps at the next visit:
- Keep the certificate and photo report with the plant records
- Make sure the unit’s access doors open easily
- Report water on the plant room floor
- Change filters on schedule and log each change
Stick to the filter change schedule, as that does more than anything to keep the unit clean. Record each change in the maintenance log.
Change or clean filters on time. Overloaded filters let more dirt through to the coils and fan.
Nearby places to Westhumble
More services for Westhumble
Why it’s worth doing now in Westhumble
A slimy drain tray only gets worse. Left alone, it can overflow, leak into the plant area or ceiling below and spread smells through the system. Clearing it now is a much smaller job. Rural sites cannot always move to another kitchen or room when something fails.
Putting the work off seldom saves money. Problems in a system tend to grow, which can make the next visit longer. If you are not sure what’s needed, call us on 0345 646 2711 or email us and we’ll give you an honest view and a fixed quote.
Why book with us
- Full insurance on every job
- CHAS, SafeContractor and ISO 9001
- Every job surveyed first
- In business since 2009
Take a look at how cleaning jobs are priced or our accreditations.