Essex · Air handling unit cleaning
Air handling unit cleaning in Watch House Green, Essex
AHU cleaning for Watch House Green and the surrounding area: diagnosis first, then a fixed quote, the work and a report with photos. Call for a fixed quote.
- Odours coming through the supply air
- Dirty coils holding back the airflow
- Drain trays holding standing water
AHU cleaning in Watch House Green
No two plant rooms are the same, whether it’s a compact unit in a ceiling void or a big unit on the roof. We look at the unit first, from pictures or a site visit, and send you a fixed quote, so you know where you stand. If you’re dealing with stale or musty smells from the ventilation and dirty filters cutting the airflow, we can help, from supply and extract fans, dampers and louvres and heating and cooling coils onwards.
Somewhere as small as Watch House Green, ducted ventilation is usually limited to a school, a care home, a surgery or a converted business building, wherever there is one, but those that do need it inspected and cleaned like any other.
Our accreditations include CHAS, SafeContractor and ISO 9001, and we are fully insured. On top of that, we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Location
- Watch House Green (CM6)
- Wider area
- Essex
- Reporting
- Photo report after every visit
- Quote
- A fixed price before we start
- Working hours
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Last updated
- 30 October 2026
What a clean won’t put right
We’d rather tell you now than book work that will not help, so these are the things it will not cover:
- A system that is undersized for the building
- Faulty motors, drives or bearings
- Building management system faults
Not sure which it is? You can ring 0345 646 2711, or email photos and we will tell you honestly.
What the work covers
- Supply and extract fans
- Drain trays
- Heating and cooling coils
- Dampers and louvres
- Internal panels
- Filter sections
Between visits
To keep the system working properly between visits:
- Diary the inspection date recommended in the report
- Stick to the filter change plan
- Keep inspection doors on the unit in good order
- Keep the area around the fresh air intake clear
Photos in the report cover the filters, coils, drain tray, fan and casing, and note any part we couldn’t get to. Any defects we noticed, like a leaking tray or damaged lining, are listed.
Don’t let leaves, litter or stored materials build up near the fresh air intake. What’s near the intake ends up in the unit.
How it works
We are used to working while the site is closed. Evenings, nights and weekends are when much of our work happens, so a kitchen or building can carry on as usual the next day. On site, the work takes from a few hours for a compact unit to a day or more for a large one. Pictures of the system and its access let us plan the work in Watch House Green before we set off.
- We agree a shutdown window that suits the building.
- We take before photos of each section of the unit.
- We work through the unit from the intake to the outlet.
- The fan and drain tray are cleaned and the drain checked.
- We take after photos and issue the certificate and report.
Before we arrive
- Arrange a key holder or contact on site
- Tell us where we can park and unload
- Let us know when the site is closed or quiet
Get a fixed quote
Some systems can be priced from pictures; others need a survey. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, you get a fixed price before we start.
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Towns and villages near Watch House Green
What else we do in Watch House Green
Managing agents and facilities teams in Watch House Green
Multi-site operators often want one contractor and one number. We work across London and the South East, so visits at different addresses can be planned together and kept to a regular schedule.
Keeping records across a portfolio is half the battle. Every visit ends with a dated report and pictures, ready to show insurers, fire officers or EHOs.
Ventilation in Watch House Green buildings
There are about 5 schools, colleges and universities and about 3 caring premises (care homes, nurseries and hospitals) on the FSA’s food hygiene register in and around Watch House Green, up to about a mile and a half out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Braintree Community Hospital is the nearest hospital, about 3.8 miles east of Watch House Green. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. At about 34 miles from central London, Watch House Green sits well inside the area we cover. We work evenings, overnight and at weekends, so the visit fits around the site.
Braintree Community Hospital, about 3.8 miles east, is the nearest hospital to Watch House Green, and healthcare sites of every size need their supply air kept clean.
Watch House Green is about 5 miles west of Braintree, in Essex. Anywhere in CM6, we can take on AHU cleaning. Watch House Green is one of 644 places in Essex we cover for commercial clients. Our Chelmsford page covers sites nearby (9 miles or so).
Our technicians cover all of the CM6 postcode area for AHU cleaning and the roads nearby. You’ll find streets such as Watch House Green, Ravens Crescent and Oxney Villas, and we cover them all for AHU cleaning. Neighbouring places we cover for AHU cleaning include Bannister Green (1 mile south-east), Felsted (1 mile south-west), Causeway End (1 mile south-west), Blake End (1 mile north-east) and Little Dunmow (2 miles west). Further out, we also cover Chelmsford (9 miles south), Braintree (5 miles east), Maldon (13 miles south-east), Witham (9 miles south-east), Saffron Walden (14 miles north-west) and Halstead (10 miles north-east).
Landmarks near Watch House Green
Locally, jobs take us to businesses close to The Three Horseshoes pub. The nearest railway station is Braintree station, roughly 4.5 miles east of the centre. Other landmarks nearby include Braintree Community Hospital (3.8 miles east). Open spaces near Watch House Green include Phyllis Currie Nature Reserve.
When to call us in Watch House Green
Filters that aren’t changed or cleaned on time clog up, cutting airflow and sometimes letting dirty air bypass them altogether. Then the rest of the unit takes the load.
If you notice any of these, it’s worth a diagnosis:
- Blocked condensate drains and slimy trays
- Air handling units never cleaned inside
- Odours coming through the supply air
- Plant that needs cleaning after a refit
Classrooms and halls at schools such as Felsted Primary School are easiest to work in when pupils are away.
What your quote should include
- Whether the quote shows VAT
- Whether they recommend a next date
- Whether the figure could change on the day
- Whether the quote is based on a survey or pictures
Questions from Watch House Green
Do you cover smaller places like Watch House Green?
Yes. Villages and rural sites across the South East are part of our work, Watch House Green included. The journey is planned ahead, so a few details about the route help.
Can you clean school ventilation in Watch House Green during the holidays?
Yes, holiday work suits schools best. With about 5 schools and colleges on the FSA’s register within roughly a mile and a half of Watch House Green, it pays to plan holiday dates ahead. Just call us on 0345 646 2711 or email us with your term dates and we will plan around them.
Do you have a 24/7 line?
Yes, 24/7. Office hours are Monday to Friday, 8am to 6pm, and the emergency line covers the rest.
How far ahead should we book?
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.
What’s TR19?
A BESA specification in two main parts: TR19® Grease for kitchen extracts and TR19® Air for supply and extract systems. It isn’t law, but it’s the benchmark.
What happens if you can’t reach some of it?
We never leave them off the paperwork. You will know exactly which parts weren’t reached and why, along with a quote to put access in.
Can you clean without disrupting the building?
Yes. Evening, overnight and weekend work is all possible, so the building keeps running in the day.
Do you clean the ductwork as well?
Yes. We clean supply and extract ductwork to TR19® Air as well. Cleaning the unit and ducts together often makes sense, and we can survey both on the same visit.
In-house cleaning or a specialist?
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.
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. Leave those to us.
Why deal with it now?
A slimy drain tray only gets worse. 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. A planned visit to Watch House Green is easier to arrange than an emergency callout.
What you pay depends on the size of the system, the condition it’s in and access to every part of it. We give you a fixed price before any work starts, so you know where you stand.
Why Watch House Green businesses choose us
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
- We’re fully insured
- CHAS, SafeContractor and ISO 9001
- Evenings, overnight and weekends, plus 24/7 emergency callout
Take a look at how cleaning jobs are priced and how to check a contractor.