Essex · Air handling unit cleaning
Stones Green AHU cleaning
Air handling unit cleaning for businesses, landlords and public buildings in Stones Green. CHAS, SafeContractor and ISO 9001, and fully insured.
- Leaves and litter drawn into the unit
- Air handling units never cleaned inside
- Dirty coils holding back the airflow
Different parts, different methods
Filters
Filters are the first line of defence in the unit. As part of the clean, filters are checked and cleaned or replaced as agreed, and clean the filter housing.
Fans and fan sections
Every bit of air passes the fan, so a dirty fan sends dirt downstream. We clean the impeller, housing and surrounding section.
AHU cleaning in Stones Green
Drain trays under cooling coils are meant to empty. If the outlet blocks, standing water and slime build up, right in the path of the air going into the building. Clearing and cleaning the tray is central to every AHU clean. The work covers supply and extract fans, heating and cooling coils and filter sections, and common reasons people get in touch are rooms that smell stuffy when the system runs and coils clogged with dust and debris.
Work in a small place like Stones Green starts with agreeing access and timings, and the ventilation is inspected, cleaned and recorded the same as anywhere.
Duct Doctor has been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Place
- Stones Green (CO12)
- Region
- Essex
- Records
- Photo report after every visit
- Quote
- A fixed price before we start
- Hours
- Nights, weekends or holidays to suit you
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
Stones Green questions
Can you come to Stones Green after we close?
Yes, out-of-hours work is a big part of what we do. It means the site in Stones Green keeps running as normal. Your opening times are the first thing we ask for.
Can you get to a site in Stones Green?
Yes, we work in villages as well as towns, and Stones Green is covered. Let us know about access, parking and anything unusual about getting there when you book.
Is there a survey before the work?
Yes. Photos often do the job, and larger or hidden systems get a visit.
How long does an AHU clean take?
Expect it to take one overnight shift for many single units, with bigger plant phased. The unit’s size and condition make the biggest difference, and we’ll confirm the time when we quote.
Do you do ventilation duct cleaning too?
Yes. Ductwork is cleaned through access panels, and any sections we can’t reach are noted in the report, and new panels can be fitted.
How much notice should we give?
Earlier is better, particularly for night and weekend visits. Quotes normally come back within one working day, and there’s a 24/7 line for emergencies.
Which kinds of sites do you work on?
Any commercial site with kitchens or ventilation, from a single café to a large school. Hotels, schools, care homes, offices, shops and leisure sites are all part of our work.
What about areas you cannot get to?
Anything we cannot reach goes on the report, with a note of where it is, and we tell you what would make it reachable, such as extra access panels in ductwork.
What a clean will not put right
Before you book, it helps to know what’s not included:
- Breakdowns that need a mechanical engineer
- Leaking heating or cooling coils
- Ductwork downstream of the unit, which is a separate clean
If you’re not sure, just call us on 0345 646 2711 or email us and we will give you a straight answer.
Parts of the system we cover
- Dampers and louvres
- Heating and cooling coils
- Supply and extract fans
- Filter sections
- Drain trays
- Internal panels
Stones Green buildings and their air
At about 60 miles from central London, Stones Green sits well inside the area we cover. Visits are booked around your hours, evenings and weekends included.
For schools like Wix and Wrabness Primary School, the holidays are the usual time to inspect and clean ventilation.
Stones Green is about 5 miles south-west of Harwich, in Essex. If you need AHU cleaning in Stones Green, please give us a ring on 0345 646 2711 or drop us a line for a fixed quote. Our area covers London and the South East, including Stones Green. Stones Green is one of 644 places in Essex where we work for commercial clients. Chelmsford is in our area too, around 30 miles away.
Work in CO12 follows the same survey, fixed quote and written report as everywhere else we cover. If you need AHU cleaning at premises on Stone's Green Road and Colchester Road or anywhere close by, our technicians can take on the work. Neighbouring places we cover for AHU cleaning include Oak Corner (1 mile south-east), Beaumont (1 mile south-east), Tendring Green (2 miles west), Tendring Heath (2 miles west) and Tendring (2 miles south-west). We also work in nearby towns such as Colchester (11 miles west), Clacton-on-Sea (7 miles south), Harwich (5 miles north-east), Camulodunum (12 miles west), Greenstead (9 miles west) and Wivenhoe (8 miles west).
Around Stones Green
For rail, the closest station is Wrabness station, roughly 3 miles north of the centre. For a walk, there’s Oakfield Wood.
What your team can do, and what needs us
Staff cleaning and specialist work aren’t the same thing. Wiping filters daily and washing them weekly keeps the visible parts in order, but grease that has passed the filters is out of reach. Reaching it takes a specialist with the right equipment.
When your team notices a problem between visits, like drips, unusual noise, smells or damaged filters, it’s best reported rather than tackled in-house. We can diagnose it and quote.
Landlords, agents and facilities managers
We work for landlords, managing agents and facilities managers as well as the people running the site. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
If you look after several sites, we can plan visits across the whole estate and price them together. Each site gets its own report and photos, so records stay tidy.
Between visits
Good habits slow the build-up between visits. Our tips:
- Don’t store bins or materials near the intake
- Diary the inspection date recommended in the report
- File each AHU report in the maintenance log
- Report stiff or damaged access doors
If the ductwork hasn’t been cleaned, consider it next. A clean unit feeding dirty ducts only solves half the problem, and we can survey both.
Make sure access doors and panels on the unit open easily. If a section is hard to get into, it tends not to get checked.
Nearby places to Stones Green
What else we do in Stones Green
Signs you need AHU cleaning in Stones Green
Whatever surrounds a building in Stones Green, the air drawn into its AHU carries dust, pollen and debris. Most of it lands at the intake and the first stage of filters, and some travels further into the unit.
Signs it’s time to call us include:
- Units needing a clean before a new tenant or handover
- Blocked condensate drains and slimy trays
- Plant that has been serviced but not cleaned
- Dust built up on fan impellers
In Stones Green, we look inside the system before deciding what needs cleaning.
What to look for in a quote
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- Whether a written report and photos are included
- Whether they recommend a next date
- What happens if part of the system can’t be accessed
How it works
The first job on site is protection: sheeting goes over floors and surfaces close to the work. After that, the system is made safe and the work begins. The work on site takes from a few hours for a compact unit to a day or more for a large one, and the area is cleaned down before we leave. We agree a date with you, plan the drive to Stones Green and turn up when the site is quiet.
- 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.
- We close every panel, hand the unit back and send the report and certificate.
Getting ready for the visit
- Name a contact who can let us in at the agreed time
- Let us know when the site is closed or quiet
- Tell us about site rules, permits or sign-in
Get a fixed quote
Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in photos, get a survey first. Either way, you get a fixed price before we start.