Essex · Air handling unit cleaning
AHU Cleaning in Holton St Mary
One call covers cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Holton St Mary: survey, fixed quote, work and sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Dirty filters cutting the airflow
- Fan sections that haven’t been cleaned in years
- Coils clogged with dust and debris
AHU cleaning in Holton St Mary
Units vary a lot in size, age and layout, from a small ceiling-mounted unit to a large rooftop plant. We look at the unit first, from pictures or a site visit, and give you a fixed quote, so you know where you stand. We’re often asked to deal with units that have only ever had filter changes and dirty fans and fan housings, on drain trays, heating and cooling coils and internal panels.
In rural areas, ventilation units are often in roof voids or outbuildings, where filters and drain trays get forgotten.
The paperwork matters as much as the work. You get a written report with photos after every visit, covering the work done, any areas we couldn’t access and a recommended next date. File it in your maintenance log so it’s ready for an insurer, fire officer or EHO.
- Location
- Holton St Mary (CO7)
- Wider area
- Essex
- Reporting
- Report and pictures after the visit
- Quotes
- Fixed quote, usually within a working day
- When we work
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
What the work involves, part by part
Rooftop and plant room units
Ceiling-mounted and compact units are cleaned too. The space underneath is protected with sheeting first.
Internal casing and panels
Damaged internal linings or loose panels can shed material into the air. We note any we find in the report.
Keeping the system healthy
Looking after the system between visits is straightforward, and it makes the next visit easier:
- Book the next check in line with the report
- Clear leaves and litter away from the intake
- Report stiff or damaged access doors
- Note any water around the unit or leaks below it
We recommend when the unit should next be inspected or cleaned, based on what we found. Under TR19® Air the timing is set by inspection and risk, not a fixed calendar.
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.
Common problems we fix in Holton St Mary
Air handling units are normally tucked away on roofs, in plant rooms or above ceilings, so they’re easy to forget about. It’s easy for a long time to go by without anyone opening the panels.
Signs it’s time to call us include:
- Dirty filters cutting the airflow
- Condensate trays that won’t empty
- Stale or musty smells from the ventilation
- Units needing a clean before a new tenant or handover
Classrooms and halls at schools such as East Bergholt High School are easiest to work in when pupils are away.
Questions to ask before you book
- Whether the quote is based on a survey or pictures
- What insurance they carry
- Proof of accreditation you can verify
- Whether inaccessible sections are listed on the report
When it’s something else
Not every problem is solved by AHU cleaning, and we’ll tell you before any work starts. It will not put right:
- Problems with the unit’s controls or sensors
- The supply and extract ducts, quoted separately
- Breakdowns that need a mechanical engineer
If you are not sure, just give us a ring on 0345 646 2711 or drop us a line and we will give you a straight answer before booking.
What the work covers
- Heating and cooling coils
- Dampers and louvres
- Filter sections
- Internal panels
- Supply and extract fans
- Drain trays
What your team can do, and what needs us
In-house cleaning and specialist cleaning do different jobs. 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.
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. That’s our job.
What we do, step by step
There’s very little for your team to do on the day. Someone lets us in at the agreed time and shows us where everything is, and we take it from there. Before we leave, the area is tidied and the paperwork follows. Somewhere like Holton St Mary, lanes, gates and parking are worth mentioning in advance.
- First the unit is surveyed, from photos 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, coils, fan section and casing are cleaned in turn.
- We clean out the drain tray and make sure it drains.
- You get a TR19® certificate and a photo report.
How to prepare
- Find the previous report, if there is one
- Let us know about parking and loading
- Let us know about permits to work or site inductions
Getting a 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, the quote is fixed before any work is booked.
Related advice
Places near Holton St Mary
What else we do in Holton St Mary
Your questions about AHU cleaning in Holton St Mary
Do you work at weekends in Holton St Mary?
Yes. We work evenings, overnight and at weekends. Your customers, staff or residents in Holton St Mary needn’t be disturbed. Your opening times are the first thing we ask for.
Do you offer AHU cleaning in Holton St Mary?
Yes. Our area runs across London and the South East, Holton St Mary included. You can phone us on 0345 646 2711, or send details by email and tell us what needs doing.
What happens to the waste?
It leaves the site with us at the end of the visit. While we work, it’s kept contained to keep the area clean.
How long does it take to clean an air handling unit?
The work takes half a day to a full day per unit, with large plant planned over several shifts. Bigger units can be phased, and you can call 0345 646 2711, or send details by email to plan it.
Do you have a 24/7 line?
Yes. There’s a 24/7 emergency line, for problems that can’t wait. Ring any time and tell us what’s happened.
Is a quote from photos possible?
Usually, yes. Send wide shots, close-ups of any access panels and anything that worries you, and we normally come back within one working day. If pictures are not enough, we’ll survey first.
What is TR19?
TR19® is BESA’s specification for ventilation hygiene. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
What types of premises do you cover?
Any site with a kitchen or a ventilation system to look after, from a single café to a large school. Hotels, schools, care homes, offices, shops and leisure sites are all part of our work.
What AHU cleaning looks like in Holton St Mary
We cover Holton St Mary, about 58 miles from central London, as part of our work across London and the South East. The visit is fixed around your opening hours, not ours.
For buildings in and around Holton St Mary, TR19® Air cleaning starts with an inspection.
Holton St Mary is in Essex. If you need AHU cleaning in Holton St Mary, it’s easy to get a fixed quote: please call us on 0345 646 2711 or send us an email. Our area covers London and the South East, including Holton St Mary. Holton St Mary is one of 644 places in Essex we cover for AHU cleaning. Our Chelmsford page covers sites nearby, about 28 miles away.
We work across the CO7 postcode area for AHU cleaning and the roads nearby. You will find streets such as Hadleigh Road and Rose Acre, all of which we cover for AHU cleaning. We also cover the places around Holton St Mary: Higham (2 miles south-west), Stratford St Mary (2 miles south-west), Dedham (3 miles south), Withermarsh Green (3 miles west) and Thorington Street (3 miles west). Further out, we also cover Colchester (8 miles south-west), Clacton-on-Sea (15 miles south-east), Harwich (12 miles east), Camulodunum (9 miles south-west), Greenstead (8 miles south) and Wivenhoe (9 miles south).
Local landmarks in Holton St Mary
The nearest railway station is Manningtree station, about 3.6 miles south-east. Nearby you’ll also find The Munnings Museum (2.9 miles south) and Little Wenham Castle (1.9 miles north-east). For a walk, there’s Cattawade Marshes.
What affects the quote in Holton St Mary
Your quote is based on your site. We take into account:
- Site rules, permits and inductions
- The condition of the system
- Where the site is and how we reach it
- How big the system is
One small site or a whole estate, the quote is built the same way: the work involved, the access and the timing. The price is fixed before we start.
What we need to know
Before you ask for a quote, gather:
- Your last certificate, test record or report
- Wide photos of the system and the area around it
- When the site is open and when it’s quiet
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
Here’s what helps us quote: where the site is, what it is and its opening hours, photos of the system and the last certificate or report, if there is one. Then call us on 0345 646 2711, or send details by email.