Essex · Air handling unit cleaning
Moulsham AHU cleaning
AHU cleaning for commercial sites in Moulsham and across Essex. CHAS, SafeContractor and ISO 9001, and fully insured.
- Odours coming through the supply air
- Dust built up on fan impellers
- Dirty coils holding back the airflow
AHU cleaning in Moulsham
Coils are where a lot of the dirt ends up. Dirt on the fins holds back air and makes the unit work harder to do the same job. We clean coils with methods suited to their condition, taking care not to damage the fins. If you have dirty filters cutting the airflow and dirty coils holding back the airflow, we can put it right, from dampers and louvres, supply and extract fans and heating and cooling coils onwards.
Smaller buildings around Moulsham often keep their ventilation units in a roof void or plant cupboard, out of sight and easy to overlook. Every unit, large or small, has filters, coils and a drain tray to keep clean.
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, and we have been trading since 2009.
- Where
- Moulsham (CM2, CM1)
- Wider area
- Essex
- Records
- Photo report after every visit
- Quotes
- Fixed quote, typically within a working day
- Working hours
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What AHU cleaning looks like in Moulsham
Food Standards Agency records list about 35 schools, colleges and universities, about 28 care, childcare and hospital premises and about 5 hotels, B&Bs and guest houses registered as food businesses within 1.5 miles or so of the middle of Moulsham. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. Moulsham is about 29 miles from central London, well within the area we cover across London and the South East. Evening, overnight and weekend visits are all possible. Chelmsford and Essex Hospital is the nearest hospital, about 0.7 miles south-west of Moulsham. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
If you manage shops or offices close to Chelmsford station, a TR19® Air inspection shows whether the ductwork needs cleaning. Classrooms and halls at schools such as Our Lady Immaculate Catholic Primary School are easiest to work in when pupils are away.
Moulsham is about 1 mile south-west of Chelmsford, in Essex. Wherever you are in the CM2 postcode area, we can carry out AHU cleaning at your premises. Across Essex, we cover 644 places, Moulsham among them.
Our technicians cover all of CM2 and CM1 for AHU cleaning and the roads nearby. AHU cleaning is available to premises on Elm Road, York Road and Lady Lane and the roads around them. Main roads around Moulsham include the A1060 and A1099, which makes travel easy for AHU cleaning. If your site is just outside Moulsham, we cover Chelmsford (1 mile north-east), Widford (1 mile south-west), Patching (2 miles north), Writtle (2 miles west) and Chignall St James (3 miles north-west). Within a short drive, we also cover Basildon (11 miles south), Braintree (11 miles north), Harlow (15 miles west), Brentwood (10 miles south-west), Maldon (9 miles east) and Canvey Island (15 miles south).
Around Moulsham
In Moulsham, that means kitchens and buildings near Moulsham High School, Chelmsford College and Oaklands Park and the streets around them. Nearby too are Our Lady Immaculate Church (less than half a mile north) and The Anchor Public House (under half a mile north-east). The nearest railway station is Chelmsford station, roughly 0.6 miles north. Nearby you’ll also find Bond Street Chelmsford (0.6 miles north-east) and Peter Edwards Museum And Library (less than half a mile north). Green spaces nearby include Newland Grove.
Also near Moulsham
What else we do in Moulsham
Multi-site and managed buildings
Running several sites is easier with one contractor. We work across London and the South East, so visits at different addresses can be planned together and kept on a regular cycle.
Whether it’s one building or many, the standard is the same: diagnosis, a fixed price, work booked around your hours and a written report with photos.
What affects the cost of AHU cleaning
The quote reflects the site in front of us. We consider:
- Access, including roofs, risers and ceiling voids
- The scale of the work
- The condition of the system
- Travel, parking and unloading
The cost depends on how big the system is, what state it’s in and access to every part of it. You get a fixed price before we start, so there are no surprises.
Asking for a quote
To help us quote quickly, please include:
- Where the site is and what kind of site it is
- Photos showing the whole system and its surroundings
- Any access panels or hatches you can see
- Where the plant sits or the system leaves the building, such as a roof or outside wall
Photos are the quickest way to a quote: the system from a couple of angles, plus any access panels or hatches. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.
What AHU cleaning can’t fix
AHU cleaning cannot fix everything, and we’ll tell you before we start. It does not solve:
- Leaking heating or cooling coils
- Breakdowns that need a mechanical engineer
- Dirty ducts beyond the unit itself
Not sure which it is? You can phone us on 0345 646 2711 or send us an email and we will tell you honestly.
Where we work
- Dampers and louvres
- Heating and cooling coils
- Internal panels
- Drain trays
- Filter sections
- Supply and extract fans
Staff cleaning versus specialist work
Away from the kitchen, the in-house job is mainly checking: keeping grilles clear, noting unusual noise or smells and logging filter changes. The inside of ducts and units needs 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 cannot safely do is clean inside the ductwork, the fan or the risers, and that is where we come in.
FAQs for Moulsham
Can you come to Moulsham after we close?
Yes, we can come after you close and finish before you open. The site is handed back ready to open. Your opening times are the first thing we ask for.
Can a school’s ventilation in Moulsham be done out of term time?
Yes, and it’s the easiest time to do it. There are about 35 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Moulsham. You can phone us on 0345 646 2711 or email us with the dates the site is empty.
What do you need from me for a quote?
Where the site is, what it is and when it’s open, along with a few photos and any previous report.
How often should an air handling unit be cleaned?
Under TR19® Air, cleaning is led by inspection and risk rather than a set calendar. Each report suggests when the unit should next be looked at.
What do you do to protect the area?
Floors and surfaces near the work are sheeted before work begins, and anything we remove is contained. At the end, the area is cleaned down.
How long will the unit be out of action?
Expect it to take anything from half a day for one small unit to several shifts for a plant room full of them. Size, layout and how dirty it is decide the rest, and the quote will give you a clear idea.
Do you clean the ductwork as well?
Yes. Ductwork is cleaned through access panels, and any sections we cannot reach are noted in the report, with new panels fitted where necessary.
Is a quote from photos possible?
Normally, yes. Send a few wide photos plus close-ups of panels, filters or grilles, and a fixed quote typically follows within one working day. Some sites still need a visit, and we will say so.
Do you need AHU cleaning in Moulsham?
It matters for two reasons: air quality, since the unit feeds occupied rooms, and performance, since dirt makes it strain. For the people using the building every day, that is the air they breathe for hours on end.
Look out for any of the following:
- Intake sections clogged with outdoor debris
- Dirty filters cutting the airflow
- Condensate trays that will not empty
- Stale or musty smells from the ventilation
Healthcare buildings such as Chelmsford and Essex Hospital, about 0.7 miles south-west, depend on their ventilation; if you manage a surgery, clinic or care home near Moulsham, yours matters too.
Questions to ask before you book
- Whether inaccessible sections are listed on the report
- What paperwork you get at the end
- Whether the whole system is included, or only the parts that are easy to reach
- When the next visit should be, and why
The process
Night work is normal for us. A lot of visits happen overnight or at weekends, so the site can open as normal afterwards. On site, the work takes from a few hours for a compact unit to a day or more for a large one. We plan the journey to Moulsham and bring what the job is likely to need.
- First the unit is surveyed, from pictures or a visit, and the scope agreed.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- Filters are dealt with as agreed, and the coils, fan and casing cleaned.
- We clean out the drain tray and make sure it drains.
- You get a TR19® certificate and a photo report.
How to prepare
- Arrange a key holder or contact on site
- Allow time for equipment near the work to be turned off and cool down
- Mention any parking or loading restrictions
Get a fixed quote
To help us quote: the address, the type of site and when it’s open, a few photos and any previous report or certificate. Then ring 0345 646 2711, or email photos.
Advice
Looking after it afterwards
No system stays clean for ever, but care slows the build-up. Our tips:
- Report water on the plant room floor
- Flag stale or damp smells in the supply air
- Make sure the unit’s access doors open easily
- Look at the condensate drain whenever the unit is serviced
Keep filter changes on schedule between cleans, as that does more than anything to keep the unit clean. Record each change in the maintenance log.
Keep the area around the intake clear. What’s near the intake ends up in the unit.