Essex · Air handling unit cleaning
Coxtie Green AHU cleaning
Professional AHU cleaning in and around Coxtie Green, timed so the site keeps working and signed off in writing with photos.
- Blocked condensate drains and slimy trays
- Dust built up on fan impellers
- Air handling units with blocked filters
Different parts, different methods
Rooftop and plant room units
Rooftop units take the weather, and intakes can collect leaves and debris. We clean the intake and first stage of filters along with the rest.
Filters
What’s on the filters is a good clue to what’s further in. They’re photographed before and after for your records.
AHU cleaning in Coxtie Green, done properly
We clean the parts of the unit where dirt and moisture gather: filters, coils, drain trays, fans and the internal panels. You get a TR19® certificate and a photo report showing the unit before and after. Typical jobs include rooms that smell stuffy when the system runs and debris and leaves in the fresh air intake, on filter sections, heating and cooling coils and dampers and louvres.
For a building in or near Coxtie Green, access is agreed in advance and the visit is planned around the journey.
The report is your system’s health record: dated, with pictures, and showing what was done. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal, ready for your insurer.
- Location
- Coxtie Green (CM14)
- Region
- Essex
- Paperwork
- Photo report after every visit
- Price
- A fixed quote up front
- When we work
- Evenings, overnight and weekends; 24/7 emergencies
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
What AHU cleaning can’t fix
Not every problem is solved by AHU cleaning, and we’d rather say so up front. It doesn’t solve:
- Leaking heating or cooling coils
- Dirty ducts beyond the unit itself
- A system that is undersized for the building
If in doubt, ring 0345 646 2711 or drop us a line and we’ll say what we think.
What the work covers
- Heating and cooling coils
- Supply and extract fans
- Drain trays
- Filter sections
- Internal panels
- Dampers and louvres
What AHU cleaning looks like in Coxtie Green
The FSA’s food hygiene register lists about 3 schools, colleges and universities and about 6 caring premises (care homes, nurseries and hospitals) with registered kitchens or food service across Coxtie Green and its immediate surroundings (about a mile and a half). Buildings like these often rely on mechanical ventilation, which TR19® Air covers. Coxtie Green, about 18 miles from central London, is within our usual area. The visit is fixed around your opening hours, not ours. The nearest hospital to Coxtie Green is Brentwood Community Hospital, about 2.7 miles south-east. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
For schools like Becket Keys Church of England School, the holidays are the usual time to inspect and clean ventilation.
Coxtie Green is about 2 miles north-west of Brentwood, in Essex. Coxtie Green gets the same approach as every site we work on: a survey first, a fixed quote, work timed around your hours and a report with pictures. Our area takes in 644 places across Essex, from busy centres to quieter spots. There’s also a page for Chelmsford, roughly 12 miles from Coxtie Green.
Here we cover the CM14 postcode area for AHU cleaning. Whether your site is on Coxtie Green Road and Warwick Place or anywhere close by, we can help. Neighbouring places we cover for AHU cleaning include Bentley (1 mile north), Navestock Side (1 mile north), Horseman Side (1 mile west), St Vincent's Hamlet (1 mile south-west) and South Weald (1 mile south). Larger places within reach include Chelmsford (12 miles north-east), Basildon (10 miles south-east), Harlow (11 miles north-west), Billericay (7 miles east), Rayleigh (15 miles east) and Loughton (8 miles west).
Landmarks near Coxtie Green
In Coxtie Green, that means kitchens and buildings near The White Horse pub and Weald Country Park. The closest station to Coxtie Green is Brentwood station, roughly 2.6 miles south-east of the centre. Nearby you’ll also find Brentwood Community Hospital (2.7 miles south-east). Not far away are Warley Place.
The process
On the day, we arrive at the time agreed with you, which is often after service, overnight or at a weekend. Anything that needs to be off for the work is switched off and left to cool before we start, and the area around the work is covered and protected. On site, it takes a single shift for a typical unit, longer for large or heavily soiled ones. Somewhere as small as Coxtie Green, the date and timings are agreed with you well before the day.
- We start with a survey of the unit and a fixed quote for the work.
- We arrange the shutdown with your staff and sheet the area.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- Drain trays are cleared and cleaned and the outlet checked.
- You get a TR19® certificate and a photo report.
Preparing for the visit
- Make sure equipment near the work can be switched off and left to cool
- Let us know about permits to work or site inductions
- Arrange a key holder or contact on site
How to get a quote
Every quote begins with a look at the system, either from pictures and details you send or from a site visit. Then we send a fixed price so you know the cost before we start.
Read more
Do you need AHU cleaning in Coxtie Green?
Cooling coils create condensation, and that water has to go somewhere. If the drain tray outlet blocks or the tray doesn’t fall properly, water stands in it, and that’s where slime and odours start.
Any of these means the system needs a check-up:
- Units that have only ever had filter changes
- Air handling units with blocked filters
- Intake sections clogged with outdoor debris
- Condensate trays that will not empty
If you run a surgery, dental practice or care home near Coxtie Green, clean ventilation matters as much to you as to a hospital like Brentwood Community Hospital (about 2.7 miles south-east).
What to look for in a quote
- Whether the quote is based on a survey or photos
- How areas they can’t reach will be recorded
- What’s included in the scope, part by part
- Which accreditations they hold, and whether you can check them
Questions from Coxtie Green
Do you work in villages like Coxtie Green?
Yes, we work in villages as well as towns, and Coxtie Green is covered. Just mention lanes, gates or anything else about the site when you book.
Do you work at weekends in Coxtie Green?
Yes, out-of-hours work is a big part of what we do. The site is handed back ready to open. When you call us on 0345 646 2711 or email us, mention when the site is quiet.
How long does an AHU clean take?
Cleaning takes from a few hours for a compact unit to a day or more for a large one. Bigger units can be phased, so ring 0345 646 2711, or email photos to talk it through.
Can you clean the ducts connected to the AHU?
Yes. We reach the ducts through access panels, with anything inaccessible recorded, with new panels fitted where necessary.
Will the ventilation be off while you clean?
Yes. The unit has to be shut down and isolated before it’s opened. We agree the timing with your site team.
When should our AHU next be cleaned?
There’s no single answer; it comes down to the building and the unit. Regular inspection shows when it’s due, and we will suggest an interval after the first clean.
Where does the waste go?
It leaves the site with us when we go. During the work, it’s contained so the area stays clean.
What about areas you cannot get to?
The report shows them clearly. In ductwork, new access panels are often the answer, which we can install.
What affects the quote in Coxtie Green
We do not publish a price list, because sites vary so much. What we look at:
- Parking and loading at the site
- One-off work versus a regular cycle
- How easy every part is to reach
- The scale of the work
Several systems or sites on one quote can make for a more efficient booking. Mention every system or site you need covered and we’ll price it together.
What we need to know
What to send for a quote:
- Any symptoms, from odd noises to smells or leaks
- The postcode and the type of business
- Your opening hours and when the area is out of use
- A few general shots of the system
Here’s what helps us quote: the address, the type of site and when it’s open, a few pictures and any previous report or certificate. Once you have those, call us on 0345 646 2711, or send details by email.
Looking after it afterwards
So the system stays in good health:
- Clear leaves and litter away from the intake
- Book the next check in line with the report
- Keep the certificate and photo report with the plant records
- Note any water around the unit or leaks below it
The report suggests a date for the next inspection or clean, taking into account how dirty it was. TR19® Air is risk-based, so the interval depends on the unit and how the building is used.
Do not let leaves, litter or stored materials build up near the fresh air intake. Anything around the intake is likely to be drawn in.
What staff can safely do
Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. Leave those to us.
Staff cleaning and specialist work aren’t the same thing. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but they do not reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.