Surrey · Air handling unit cleaning
Merle Common AHU cleaning
For air handling unit cleaning in Merle Common, one call is all it takes, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Dust built up on fan impellers
- Filters that are clogged or overdue
- Leaves and litter drawn into the unit
AHU cleaning in Merle Common
An air handling unit is the heart of a building’s ventilation: air is pulled in, filtered, conditioned and sent out through the ducts. Whatever builds up inside it travels with that air, so cleaning the unit matters as much as cleaning the ducts. If you are dealing with debris and leaves in the fresh air intake and dirty filters cutting the airflow, we can put it right.
In a village or hamlet like Merle Common, few buildings have mechanical ventilation, but those that do need it inspected and cleaned like any other.
Insurers, fire officers and environmental health officers all look at records. That’s why every job is written up in a report with pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Where
- Merle Common (RH8)
- Wider area
- Surrey
- Paperwork
- Report and pictures after the visit
- Quote
- A fixed price before we start
- Working hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Checked
- 30 October 2026
Part by part
Drain trays
Drain trays can rust and leak over time. We record their condition with photos so repairs can be planned.
Heating and cooling coils
Dirt on a coil slows the air and makes it harder for the coil to heat or cool. A clean gets air moving through the coil properly again.
Merle Common: your questions answered
Is Merle Common in your area for AHU cleaning?
Yes. We work across London and the South East, and Merle Common is part of that. A fixed quote typically follows within one working day of the survey details.
Can the work in Merle Common be done at night or at weekends?
Yes, out-of-hours work is a big part of what we do. It means the site in Merle Common keeps running as normal. Just ring 0345 646 2711, or email photos with your opening times and we will plan around them.
What happens to the waste?
Waste is contained during the work and removed when we leave, from grease and debris to used cleaning water. We don’t leave it behind.
How long does it take to clean an air handling unit?
As a guide, it takes from a few hours for a compact unit to a day or more for a large one. The shutdown is planned to fit, out of hours if needed.
What does TR19 mean?
BESA’s ventilation hygiene specification, with two parts that matter most here: TR19® Grease for kitchen extract systems and TR19® Air for general ventilation. It isn’t law, but it’s the benchmark.
Is a quote from pictures possible?
In many cases, yes. Photos of the system and the access, plus your opening hours and last report, are often enough. Where we can’t see enough, we arrange a survey.
Can we book visits on a schedule?
Yes. Tell us what you have and how it’s used, and we’ll suggest a schedule and quote for it.
Can you come out in an emergency?
Yes, 24/7. Our office is open from 8am to 6pm on weekdays, and the emergency line covers the rest.
What we do, step by step
Your trading hours come first. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. Once we are in, the area is sheeted and anything that has to be off is turned off and cooled, and the work 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 Merle Common.
- We look at the unit and the plant area during the survey.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- Coils and trays are cleaned and the condensate drain cleared.
- The unit is closed up and handed back, with a report to follow.
Getting ready for the visit
- Make sure equipment near the work can be switched off and left to cool
- Name a contact who can let us in at the agreed time
- Dig out any earlier paperwork for the system
How to get a quote
To help us quote: the address, the type of site and when it’s open, a few pictures and the last certificate or report, if there is one. Then ring 0345 646 2711 or send us an email.
Related advice
AHU cleaning in Merle Common: local notes
Merle Common’s nearest hospital, Tandridge Priory, is about 2.1 miles north. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale. About 19 miles out from central London, Merle Common is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site.
Healthcare buildings such as Tandridge Priory, about 2.1 miles north, depend on their ventilation; if you manage a surgery, clinic or care home near Merle Common, yours matters too.
Merle Common is about 6 miles south-east of Caterham, in Surrey. Merle Common gets the same approach as every site we work on: diagnosis first, a fixed price, out-of-hours working where necessary and a written report with pictures. Merle Common is one of 395 places in Surrey where we work for commercial clients. There’s also a page for London, roughly 19 miles from Merle Common.
Postcode districts we cover here for AHU cleaning: RH8. We also cover the places around Merle Common: Crowhurst (1 mile south-west), Troy Town (2 miles south-east), Hurst Green (2 miles north-west), Pains-Hill (2 miles north) and Crowhurst Lane End (2 miles south-west). Within a short drive, we also cover Epsom (14 miles north-west), Horley (8 miles west), Redhill (8 miles west), Ewell (15 miles north-west), Reigate (9 miles west) and Caterham (6 miles north-west).
Near you in Merle Common
In Merle Common, that means kitchens and buildings near Oxted School. The closest station to Merle Common is Hurst Green station, about 1.4 miles north. Nearby you’ll also find Tandridge Priory (2.1 miles north) and Haxted Watermill Museum (2.5 miles south). Green spaces nearby include Botley Hill and Bay Pond.
When to call us in Merle Common
Air handling units are typically tucked away on roofs, in plant rooms or above ceilings, so they’re easy to forget about. Months can pass without anyone looking inside.
These are the problems we see most often:
- Intake sections clogged with outdoor debris
- Air handling units never cleaned inside
- Plant that needs cleaning after a refit
- Filters that are clogged or overdue
For schools like Holland Junior School, the holidays are the usual time to inspect and clean ventilation.
Before you book anyone
- What hours they’ll be on site
- Proof of accreditation you can verify
- What insurance they carry
- Whether the price is fixed
Places near Merle Common
What else we do in Merle Common
What your team can do, and what needs us
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. That’s our job.
When your team notices a problem between visits, such as dripping grease, a noisy fan, a smell or a filter that will not come clean, they should report it rather than try to fix it. We’ll take a look and give you a fixed quote.
Why act early in Merle Common
Standing water in a drain tray does not 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. Rural sites can’t always move to another kitchen or room when something fails.
One small site or a whole estate, the quote is built the same way: what needs doing, how we get to it and when. You’ll have a fixed price before work begins.
Why book with us
- CHAS, SafeContractor and ISO 9001
- A single point of contact for sites across the South East and London
- We diagnose before we treat
- Fully insured
Take a look at how cleaning jobs are priced and our accreditations.
Keeping the system healthy
How long the results last depends on use and care. Here’s what we suggest:
- File each AHU report in the maintenance log
- Don’t store bins or materials near the intake
- Report stiff or damaged access doors
- Change filters on schedule and log each change
The ducts served by the unit may need attention too. Cleaning the unit and ducts together gives the best result, and we can quote for both.
Make the drain tray part of every maintenance visit. Catching a slow drain early stops standing water building up.
Fixed quotes for AHU cleaning in Merle Common
You’ll get a fixed price before work begins. It takes into account:
- What state the system is in
- A single visit or a regular plan
- Site requirements such as sign-in and permits
- Where the site is and how we reach it
What you pay reflects the actual work. That is why every job is surveyed first, and the price is agreed before work begins.
What we need to know
A few details help us quote accurately. With your enquiry, please include:
- Problems your staff have spotted
- Wide pictures of the system and the area around it
- Detail shots of panels, filters and grilles
- When the site is open and when it’s quiet
The quickest way to a quote is to send pictures: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Add the site type and your opening hours, and we can price many jobs without a visit.