Essex · Air handling unit cleaning
Air handling unit cleaning in Mundon, Essex
We cover Mundon for cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces. Fixed quotes, work around your opening hours and photo reports as standard.
- Leaves and litter drawn into the unit
- Dirty fans and fan housings
- Rooms that smell stuffy when the system runs
Leave it or put it right?
Standing water in a drain tray does not clear itself. Leave it and you risk overflows, leaks into the space below and odours carried round the building. Clearing it now is a much smaller job. Rural sites can’t always move to another kitchen or room when something fails.
Leaving it longer rarely makes the work cheaper. Build-up, wear and faults tend to get worse, not better, and a neglected system can mean more work. If you are unsure, call us on 0345 646 2711, or email photos and we’ll give you an honest view and a fixed quote.
What you get with us
- Survey first, then a fixed quote
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Work around your opening hours, with 24/7 emergency cover
- Fixed quotes, normally within one working day
About our AHU cleaning in Mundon
An air handling unit is the heart of a building’s ventilation: air is pulled in, filtered, conditioned and sent out through the ducts. Anything that collects inside the unit can end up in the rooms it serves, so cleaning the unit matters as much as cleaning the ducts. Common call-outs are for plant that needs cleaning after a refit and units that have only ever had filter changes, on drain trays, internal panels and supply and extract fans.
For a building in or near Mundon, access is agreed in advance and the visit is planned around the journey.
Insurers, fire officers and environmental health officers all look at records. So every job comes with a written report and pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Where
- Mundon (CM9)
- Region
- Essex
- Records
- Written report with pictures
- Price
- A fixed price before work begins
- Hours
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Mundon: your questions answered
Do you work at weekends in Mundon?
Yes, evening, overnight and weekend work is normal for us. The work in Mundon can fit around your hours. Let us know the hours you’re closed and we’ll book within them.
Do you offer AHU cleaning in Mundon?
Yes. Our area runs across London and the South East, Mundon included. To start, give us a ring on 0345 646 2711, or email photos with a few pictures of the system.
How long does an AHU clean take?
Typically the clean takes anything from half a day for one small unit to several shifts for a plant room full of them. We plan the shutdown around that, out of hours if needed.
Do you give a certificate after the clean?
Yes. You get a TR19® certificate plus before and after photos. They’re worth keeping with the plant records.
Are you fully insured?
Yes. We are fully insured, and we can share the details when you need them.
How much does AHU cleaning cost?
We don’t publish prices, because the cost depends on the job: how big it is, what state it’s in, how we reach it and the working hours. We fix the price before work begins.
How often do AHUs need cleaning?
It depends on the unit, the filters and how the building is used. Inspection tells you when cleaning is needed, and the report recommends a next date.
What does TR19 mean?
BESA’s ventilation hygiene specification, with two parts that matter most here: TR19® Grease for kitchen extract systems and TR19® Air for general ventilation. It is not legislation, but it’s the standard people check against.
Ventilation in Mundon buildings
We cover Mundon, about 37 miles from central London, as part of our work across London and the South East. Evening, overnight and weekend visits are all possible.
An inspection comes first for any ventilation job around Mundon, so the cleaning matches what’s there.
Mundon is about 3 miles south of Maldon, in Essex. From the centre of Mundon to the outskirts, we cover AHU cleaning for every kind of premises, from a single unit to a large public building. Mundon is one of 644 places in Essex we cover for AHU cleaning. You can also see our page for Chelmsford, roughly 10 miles from Mundon.
Work in CM9 follows the same survey, fixed quote and written report as everywhere else we cover. That includes premises on Main Road, Wood Lane and Parsonage Chase and the roads around them. We also cover the places around Mundon: Latchingdon (2 miles south-east), Maylandsea (2 miles east), Mayland (3 miles east), Althorne (3 miles south-east) and Ostend (5 miles south-east). Larger places within reach include Chelmsford (10 miles west), Basildon (13 miles south-west), Braintree (15 miles north-west), Maldon (3 miles north), Canvey Island (13 miles south-west) and Billericay (13 miles west).
Landmarks near Mundon
In Mundon, that means kitchens and buildings near The White Horse Public House and the streets around them. For rail, the closest station is North Fambridge station, about 3 miles south of the centre. Open spaces near Mundon include Northey Island.
Between visits
How long the results last depends on use and care. Here’s what we suggest:
- Keep the certificate and photo report with the plant records
- Clear leaves and litter away from the intake
- Do not ignore odours coming through the grilles
- Make sure condensate is draining away
Restart the unit with your site team or maintenance contractor once we have finished. Check the drain tray is emptying over the first few days to confirm water is draining away.
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.
Nearby places to Mundon
Also in Mundon
For landlords and multi-site operators
Running several sites is easier with one contractor. We cover South East England and London, so visits at different addresses can be planned together and kept to a regular schedule.
Keeping records across a portfolio is half the battle. Each visit ends with a dated report and pictures, ready to show insurers, fire officers or EHOs.
In-house cleaning or a specialist?
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but hidden parts of the system still need specialist attention.
Away from the kitchen, the in-house job is mainly checking: keeping grilles clear, noting unusual noise or smells and logging filter changes. Cleaning inside ducts and units is specialist work.
What happens on the day
When we arrive, we check the system against the survey or the pictures you sent. Anything unexpected is raised with you before we go further. After that, the work takes half a day to a full day per unit, with large plant planned over several shifts. Somewhere as small as Mundon, the date and timings are agreed with you well before the day.
- We agree a shutdown window that suits the building.
- Before cleaning, each section is photographed.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- The fan and drain tray are cleaned and the drain checked.
- We take after photos and issue the certificate and report.
Preparing for the visit
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Move anything stored near the system
- Let us know about permits to work or site inductions
Get a fixed quote
To get a fixed quote, give us a ring on 0345 646 2711 or send us an email with the site type, your trading hours and a short description of the system. A few photos and your last certificate or report help a lot. We typically come back within one working day.
Related advice
When it’s something else
We’d rather tell you now than book work that will not help, so here are the limits:
- Damaged coils beyond cleaning
- Mechanical faults with motors, belts or bearings
- Airflow problems caused by the system’s design
If in doubt, call 0345 646 2711 or drop us a line and we will say what we think.
What the work covers
- Dampers and louvres
- Drain trays
- Supply and extract fans
- Filter sections
- Internal panels
- Heating and cooling coils
What we are called out for in Mundon
Most units live out of sight on roofs, in plant rooms or in ceiling voids and are rarely seen by anyone but maintenance staff. Months can pass without anyone looking inside.
Any of these means the system needs a check-up:
- Intake sections clogged with outdoor debris
- Filters that are clogged or overdue
- Coils clogged with dust and debris
- Units needing a clean before a new tenant or handover
In Mundon, supply and extract ducts are cleaned along with the units that serve them.
Questions to ask before you book
- Whether they’re fully insured
- When they can work, and whether that is outside your opening hours
- Whether the whole system is included, or only the parts that are easy to reach
- How VAT is shown on the quote