Essex · Air handling unit cleaning
Start Hill AHU cleaning
Cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Start Hill, surveyed first and signed off with a written report and photos. Call for a fixed quote.
- Units that have only ever had filter changes
- Leaves and litter drawn into the unit
- Dirty fans and fan housings
Multi-site and managed buildings
We also work for facilities teams across offices, schools and healthcare in Start Hill and across Essex. Work can be phased by floor, building or site around the people who use them.
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements, and we will send a fixed quote.
About our AHU cleaning in Start Hill
No two plant rooms are the same, 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 before any cleaning starts. The work covers dampers and louvres, supply and extract fans and filter sections, and people most often call us about fan sections that haven’t been cleaned in years and plant that needs cleaning after a refit.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, where filters and drain trays get forgotten.
The report is your system’s health record: a dated account with pictures of everything we did. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal and sits alongside the report.
- Place
- Start Hill (CM22)
- Wider area
- Essex
- Reporting
- Photo report after each visit
- Price
- A fixed price before we start
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
Between visits
Looking after the system between visits is straightforward, and it makes the next visit easier:
- Don’t ignore odours coming through the grilles
- Book the next check in line with the report
- Keep the certificate and photo report with the plant records
- Change filters on schedule and log each change
Restart the unit with your site team or maintenance contractor once we’ve finished. Check the drain tray is emptying over the first few days to confirm water is draining away.
Regular filter changes are the best protection an AHU has. Once filters clog, dirt starts getting past them.
Nearby places to Start Hill
What else we do in Start Hill
Common problems we fix in Start Hill
Dirt in an AHU matters in two ways: air quality, since the unit feeds occupied rooms, and performance, since dirt makes it strain. For the people using the building every day, that’s the air they breathe for hours on end.
Keep an eye out for these warning signs:
- Odours coming through the supply air
- Plant that has been serviced but not cleaned
- Condensate trays that will not empty
- Air handling units due a clean after building work
Healthcare buildings such as Herts and Essex Hospital, about 1.6 miles west, depend on their ventilation; if you manage a surgery, clinic or care home near Start Hill, yours matters too.
Before you book anyone
- Whether the figure could change on the day
- How areas they can’t reach will be recorded
- Proof of accreditation you can verify
- What records you’ll receive afterwards
In-house cleaning or a specialist?
In-house cleaning and specialist cleaning do different jobs. Wiping filters daily and washing them weekly keeps the visible parts in order, but they do not reach the grease that builds up further in. That part needs specialist access and equipment.
When your team notices a problem between visits, such as dripping grease, a noisy fan, a smell or a filter that will not come clean, it’s best reported rather than tackled in-house. We can diagnose it and quote.
Why deal with it now?
When the unit is clean, less dirt reaches the ducts, so the whole system stays cleaner for longer. It also means the next inspection has less to find. Somewhere as small as Start Hill, losing a kitchen or building to a fault is felt by everyone who uses it.
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we will explain each part.
What you get with us
- We diagnose before we treat
- Full insurance on every job
- In business since 2009
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease
Read what affects the cost or our accreditations.
Your questions about AHU cleaning in Start Hill
Do you cover smaller places like Start Hill?
Yes. Start Hill is within the area we cover across London and the South East. Photos of the system and directions to the site help us plan the visit.
Can a school’s ventilation in Start Hill be done out of term time?
Yes, holiday work suits schools best. Food Standards Agency records list about 5 schools, colleges and universities with registered kitchens within about a mile and a half of Start Hill. Just ring 0345 646 2711, or email photos with your term dates and we will plan around them.
Are you accredited?
CHAS, SafeContractor, ISO 9001 and BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. We are fully insured and have been trading since 2009.
Do you work with multi-site operators?
Yes. You deal with one contact for every site in our area, with visits on a regular schedule.
Do you have a 24/7 line?
Yes. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line and we’ll talk you through the next steps.
Do you clean the ductwork as well?
Yes, the ductwork, grilles and diffusers the unit serves. We will tell you after the survey whether the ducts need it.
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 from a few hours for a compact unit to a day or more for a large one. The shutdown is planned to fit, out of hours if needed.
Ventilation in Start Hill buildings
Food Standards Agency data includes about 5 schools, colleges and universities and about 7 hotels and B&Bs across Start Hill and its immediate surroundings (about a mile and a half). Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. About 1.6 miles west of Start Hill is Herts and Essex Hospital, the nearest hospital. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. Start Hill is about 29 miles from central London, well within the area we cover across London and the South East. A survey and a fixed quote come first, then the visit at a time that suits you.
If you manage a school such as Birchwood High School, ventilation cleaning is best booked for the holidays.
Start Hill is about 2 miles east of Bishop's Stortford, in Essex. We carry out AHU cleaning for commercial premises of every kind in Start Hill and the rest of Essex. Start Hill is one of 644 places in Essex we cover for commercial clients. For sites nearby, see our Chelmsford page (15 miles or so).
Our technicians cover all of the CM22 postcode area for AHU cleaning and the roads nearby. AHU cleaning is available to premises on Start Hill and Provenance Close and nearby roads. Other places close to Start Hill include Bedlar's Green (1 mile south), Takeley Street (2 miles east), Burton End (2 miles north), Takeley (2 miles east) and Smith's Green (3 miles east). Within a short drive, we also cover Chelmsford (15 miles south-east), Braintree (15 miles east), Harlow (8 miles south-west), Saffron Walden (11 miles north), Waltham Abbey (15 miles south-west) and Great Dunmow (6 miles east).
Landmarks near Start Hill
We work in commercial kitchens and buildings around The Three Willows pub and the streets around them. The nearest railway station is Bishops Stortford station, about 1.9 miles west. Well-known places in the area include House On The Hill Toy Museum (2.4 miles north) and Moated mound (4.5 miles west). Open spaces near Start Hill include Portingbury Hills and Rushy Mead.
What affects the quote in Start Hill
Some jobs are bigger than they look, and some smaller. The main factors:
- The times the site is available
- How easy every part is to reach
- How big the system is
- One-off work versus a regular cycle
The cost 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 there are no surprises.
What to send for a quote
To help us quote quickly, send us:
- Your opening hours and when the area is out of use
- Any access panels or hatches you can see
- Wide pictures of the system and the area around it
- The paperwork from the last visit, if you have it
Some systems can be priced from photos; others need a survey. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before work begins.
What happens on the day
Protection comes first: sheeting goes over floors and surfaces close to the work. After that, the system is made safe and the work begins. It takes anything from half a day for one small unit to several shifts for a plant room full of them, and we clear up before we go. Seeing the system in pictures first means the trip to Start Hill can be planned properly.
- We agree a shutdown window that suits the building.
- We take before photos of each section of the unit.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- We finish with the fan section and the drain tray.
- We take after pictures and issue the certificate and report.
How to prepare
- Let us know how we reach the system, including roofs, risers and plant rooms
- Let us know when the site is closed or quiet
- Name a contact who can let us in at the agreed time
How to get a quote
The quickest way to a quote is to send photos: 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 we can price many jobs without a visit.