Surrey · Air handling unit cleaning
Air handling unit cleaning in Charlwood, Surrey
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Charlwood, surveyed first and signed off with a written report and pictures. Ask us for a fixed quote.
- Intake sections clogged with outdoor debris
- Dirty filters cutting the airflow
- Dirty fans and fan housings
How we handle AHU cleaning in Charlwood
We clean air handling units for buildings in Charlwood and across Surrey, working to TR19® Air, in offices, schools, hospitals, care homes and retail. Units are cleaned when the site can spare them, often evenings, overnight or weekends. The work covers drain trays, dampers and louvres and internal panels, and the jobs we see most are filters that are clogged or overdue and stale or musty smells from the ventilation.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
The report is your system’s health record: dated, with photos, and showing what was done. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal and sits alongside the report.
- Location
- Charlwood (RH6)
- Region
- Surrey
- Paperwork
- Photo report after every visit
- Quote
- Fixed quote, typically within a working day
- Working hours
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
Different parts, different methods
Fans and fan sections
Dust on a fan impeller adds weight and wear. A clean fan runs more smoothly.
Rooftop and plant room units
Units outside are exposed to weather and windblown debris. We clean the intake and first stage of filters along with the rest.
Looking after it afterwards
No system stays clean for ever, but care slows the build-up. Our tips:
- Do not store bins or materials near the intake
- Report musty smells from the vents right away
- Diary the inspection date recommended in the report
- Keep filter changes on time and recorded
If the ductwork hasn’t been cleaned, consider it next. A clean unit feeding dirty ducts only solves half the problem, and we can quote for both.
Make the drain tray part of every maintenance visit. A drain that is cleared early never gets to the slime stage.
AHU cleaning in Charlwood: local notes
Food Standards Agency data includes about 3 hotels and B&Bs across Charlwood and its immediate surroundings (about a mile and a half). Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Langley Green Hospital is the nearest hospital, about 2.2 miles south-east of Charlwood. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale. Charlwood, about 24 miles from central London, is within our usual area. Evening, overnight and weekend visits are all possible.
If you run a surgery, dental practice or care home near Charlwood, clean ventilation matters as much to you as to a hospital like Langley Green Hospital (about 2.2 miles south-east).
Charlwood is about 3 miles south-west of Horley, in Surrey. If you need AHU cleaning in Charlwood, it’s easy to get a fixed quote: please ring 0345 646 2711 or email us. Our area covers London and the South East, Charlwood included. Across Surrey, we cover 395 places, Charlwood among them. We also work in Guildford, about 16 miles from Charlwood.
We cover every part of the RH6 postcode area for AHU cleaning and the roads nearby. AHU cleaning is available to premises on The Street, Yew Tree Road and Rectory Lane and the roads around them. If your site is just outside Charlwood, we cover Russ Hill (1 mile south-west), Norwood Hill (2 miles north), Cudworth (2 miles west), Ifieldwood (2 miles south) and Ifield (2 miles south). We also work in nearby towns such as Epsom (13 miles north), Horley (3 miles north-east), Redhill (6 miles north-east), Ewell (14 miles north), Reigate (6 miles north) and Caterham (11 miles north-east).
Around Charlwood
We work in commercial kitchens and buildings around The Half Moon pub and Edolph's Copse, among other places. For rail, the closest station is Ifield station, roughly 2.8 miles south of the centre. Other landmarks nearby include Crawley Museum (3.1 miles south-east) and County Mall (3.4 miles south-east). Green spaces nearby include Tilgate Lake.
Nearby places to Charlwood
What else we do in Charlwood
The process
At the end of the visit, someone from your team can look over the work with us. We point out anything that couldn’t be reached or needs a follow-up, and it goes on the report too. The visit takes anything from half a day for one small unit to several shifts for a plant room full of them. Rural roads and tight entrances are worth telling us about before a visit to Charlwood.
- First the unit is surveyed, from photos or a visit, and the scope agreed.
- We arrange the shutdown with your staff and sheet the area.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- Standing water and slime come out of the tray and the drain is checked.
- We close up the unit and send the certificate and before and after photos.
How to prepare
- Let us know about permits to work or site inductions
- Let us know how we reach the system, including roofs, risers and plant rooms
- Dig out any earlier paperwork for the system
Getting a quote
The quickest way to a quote is to send photos: the system from a couple of angles, plus any access panels or hatches. Add the site type and your opening hours, and many jobs can be priced from that alone.
Read more
For landlords and multi-site operators
Managing agents often deal with us directly. Send the address, what’s needed and how access works, and we will send a fixed quote.
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 each one has its own record.
What affects the cost of AHU cleaning
Before we fix a price, we need to know a few things. We check:
- Where the site is and how we reach it
- Any permits to work or inductions
- The times the site is available
- What state the system is in
The cost depends on how big the system is, the condition it’s in and access to every part of it. We give you a fixed price before we start, so you know where you stand.
What to send for a quote
When you call or email, these details help:
- Problems your staff have spotted
- The site address and the type of premises
- Your opening hours and when the area is out of use
- Wide pictures of the system and the area around it
For a fixed quote, ring 0345 646 2711 or drop us a line and tell us the type of site, your opening hours and roughly what the system looks like. Photos and the last report, if you have one, make the quote quicker. We typically come back within one working day.
Signs you need AHU cleaning in Charlwood
It matters for two reasons: the unit supplies the air people breathe, and a dirty unit has to work harder. For anyone working, learning or staying in a building in Charlwood, that is air they breathe for hours at a time.
Signs it’s time to call us include:
- Odours coming through the supply air
- Leaves and litter drawn into the unit
- Plant that needs cleaning after a refit
- Fan sections that haven’t been cleaned in years
Wherever a school like Charlwood Village Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
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 paperwork you get at the end
- Whether inaccessible sections are listed on the report
Why it’s worth doing now in Charlwood
Dirt left in an air handling unit does not stay in the unit. It’s carried through the ductwork and out of the grilles, which is why the unit and the ducts are best cleaned together. Rural sites cannot always move to another kitchen or room when something fails.
Combining work into one visit or one programme often makes better use of the time. Mention every system or site you need covered, and you’ll get one fixed quote.
Why us?
- We diagnose before we treat
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- We are fully insured
- Ventilation hygiene specialists since 2009
See what affects the cost and our accreditations and certificates.
Charlwood: your questions answered
Can you work in Charlwood outside opening hours?
Yes, out-of-hours work is a big part of what we do. The work in Charlwood can fit around your hours. Your opening times are the first thing we ask for.
Is Charlwood within the area you cover?
Yes, we work in villages as well as towns, and Charlwood is covered. Let us know about access, parking and anything unusual about getting there when you book.
What should I send you?
Only a few details: where it is, what kind of site, when it’s open and the access. Photos and the last report help too. Then call 0345 646 2711 or email us.
What happens to the waste?
It leaves the site with us when we go. While we work, it’s kept contained so the area stays clean.
Can you price the work without visiting?
Normally, yes. Send a few wide pictures plus close-ups of panels, filters or grilles, and a fixed quote normally follows within one working day. Some sites still need a visit, and we’ll say so.
Do you clean the ductwork as well?
Yes. Ductwork is cleaned through access panels, with anything inaccessible recorded, with new panels fitted where needed.
How much notice do you need?
It depends on the time you need and how big the job is. Tell us your preferred dates when you ask for a quote, and for anything urgent, ring our 24/7 emergency line.
How long does an AHU clean take?
Expect it to take anything from half a day for one small unit to several shifts for a plant room full of them. The unit’s size and condition make the biggest difference, and we will confirm the time when we quote.