Essex · Air handling unit cleaning
Air handling unit cleaning in High Ongar, Essex
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces for businesses, landlords and public buildings in High Ongar. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Fan sections that haven’t been cleaned in years
- Stale or musty smells from the ventilation
- Air handling units never cleaned inside
AHU cleaning around High Ongar
The FSA’s food hygiene register lists about 3 schools, colleges and universities and about 4 hospitals, care homes and childcare premises with registered kitchens or food service within about 1.5 miles of central High Ongar. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. High Ongar is about 21 miles from central London, well within the area we cover across London and the South East. We work evenings, overnight and at weekends, so the visit fits around the site.
An inspection comes first for any ventilation job around High Ongar, so the cleaning matches what’s there.
High Ongar is about 6 miles north of Brentwood, in Essex. From the centre of High Ongar to the outskirts, we cover AHU cleaning for every kind of premises, from a single unit to a large public building. High Ongar is one of 644 towns, villages and districts in Essex where we work for commercial clients. For sites nearby, see our Chelmsford page (10 miles or so).
Every address in CM5 is within our area for AHU cleaning, from the main roads to the quietest streets. If you need AHU cleaning at premises on The Street, Mill Lane and Millfield or anywhere close by, we can help. We also cover Chipping Ongar (1 mile west), Shelley (1 mile north-west), Norton Mandeville (1 mile north-east), King Street (1 mile east) and Greensted (2 miles west). Larger places within reach include Chelmsford (10 miles east), Basildon (12 miles south-east), Harlow (8 miles north-west), Brentwood (6 miles south), Billericay (9 miles south-east) and Loughton (9 miles south-west).
Around High Ongar
We work in commercial kitchens and buildings around Red Lion Public House and The Ongar Academy and the streets around them. Nearby you’ll also find Willingale Doe (3.7 miles north-east).
AHU cleaning in High Ongar
No two plant rooms are the same, from a small ceiling-mounted unit to a large rooftop plant. Every job starts with a survey, from pictures or on site, followed by a fixed quote before any cleaning starts. Typical jobs include stale or musty smells from the ventilation and drain trays holding standing water, across filter sections, dampers and louvres and supply and extract fans.
For a building in or near High Ongar, access is agreed in advance and the visit is planned around the journey, and the ventilation is inspected, cleaned and recorded the same as anywhere.
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.
- Place
- High Ongar (CM5)
- Region
- Essex
- Reporting
- Report and photos after the visit
- Quote
- A fixed price before work begins
- When we work
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
What happens on the day
Your staff do not need to do much on the day. A contact on site lets us in at the agreed time and points us to the system, and the rest is down to us. Before we leave, the area is tidied and the paperwork follows. A quick note on how to find the site and where to park makes a visit to High Ongar run smoothly.
- We look at the unit and the plant area during the survey.
- The area is protected and the unit made safe.
- Dirt and debris are removed from each section.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
Before we arrive
- Tell us the best time to work, such as after service or at a weekend
- Allow time for equipment near the work to be turned off and cool down
- Mention any locked doors, roof access or ceiling voids
Get a fixed 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.
Related advice
Managing agents and facilities teams in High Ongar
When the building owner and the occupier are different, the lease normally sets out who maintains what. We can quote either party and send the paperwork to whoever needs it.
For anyone managing more than one site, we can schedule visits across all of them on one quote. Each site gets its own report and pictures, so records stay tidy.
When to call us in High Ongar
No filter stops everything. The fine dust that passes the filters lands on the coils, the fan and the internal panels, building up layer by layer.
Common reasons sites call us include:
- Intake sections clogged with outdoor debris
- Rooms that smell stuffy when the system runs
- Plant that has been serviced but not cleaned
- Dirty fans and fan housings
For schools like High Ongar Primary School, the holidays are the usual time to inspect and clean ventilation.
Comparing quotes
- What paperwork you get at the end
- Whether they’re fully insured
- Whether inaccessible sections are listed on the report
- Which accreditations they hold, and whether you can check them
Questions from High Ongar
Can you clean school ventilation in High Ongar during the holidays?
Yes. The holidays are the usual time for school work. The FSA’s register shows about 3 schools and colleges with food registrations within roughly a mile and a half of High Ongar. You can phone us on 0345 646 2711 or send us an email with the dates the site is empty.
Can you get to a site in High Ongar?
Yes, we work in villages as well as towns, and High Ongar is covered. Photos of the system and directions to the site help us plan the visit.
What does AHU cleaning cost?
Every site is different, so each gets its own fixed quote. To get one, call us on 0345 646 2711 or email us and tell us about the site and its opening hours.
Do you survey before quoting?
Yes. For many sites, photos and a few details are enough, and larger or hidden systems get a visit.
How long does it take to clean an air handling unit?
As a guide, it takes half a day to a full day per unit, with large plant planned over several shifts. The shutdown is planned to fit, including evenings or weekends.
Do you clean the ductwork as well?
Yes, the ductwork, grilles and diffusers the unit serves. The survey shows whether the ducts need cleaning now.
When should our AHU next be cleaned?
Under TR19® Air, cleaning is led by inspection and risk rather than a set calendar. We recommend a next date in each report.
Can one contract cover all our sites?
Yes. You deal with one contact for every site across London and the South East, with visits on a regular schedule.
What AHU cleaning cannot fix
It’s worth knowing the limits before booking:
- Ventilation that was badly designed in the first place
- Faulty motors, drives or bearings
- Coils that are corroded or leaking and need replacing
Not sure which it is? You can call 0345 646 2711 or send us an email and we’ll tell you honestly.
What the work covers
- Filter sections
- Dampers and louvres
- Drain trays
- Supply and extract fans
- Internal panels
- Heating and cooling coils
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. That is our job.
In-house cleaning and specialist cleaning do different jobs. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but grease that has passed the filters is out of reach. Reaching it takes a specialist with the right equipment.
What affects the cost of AHU cleaning
The survey tells us what the work involves. We look at:
- A single visit or a regular plan
- The condition we find in the survey
- Whether we need access equipment or extra panels
- The size of the system
Every site is different, so we price each one individually. Size, access, the condition of the system and when we can work all make a difference.
Asking for a quote
There’s no need for technical detail. It helps if you can send:
- How we’d reach plant on a roof or in a plant room
- Any access panels or hatches you can see
- A few general shots of the system
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
We do not publish a price list, because no two systems are the same. We look at your system first, from photos or on a visit, and then give you a fixed quote. To start, give us a ring on 0345 646 2711 or use the quote form.
Also near High Ongar
What else we do in High Ongar
Part by part
Internal casing and panels
Loose or damaged linings inside a unit can break up into the airstream. We note any we find in the report.
Drain trays
Older trays can corrode and start leaking. Their condition goes into the report with photos so you can decide on any repairs.