Hertfordshire · Air handling unit cleaning
AHU Cleaning in Green Tye
For cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Green Tye, one call is all it takes, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Dirty fans and fan housings
- Plant that needs cleaning after a refit
- Dirty filters cutting the airflow
AHU cleaning in Green Tye, done properly
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 photos or a site visit, and give you a fixed quote, so you know where you stand. The work covers dampers and louvres, drain trays and supply and extract fans, and common reasons people get in touch are dirty fans and fan housings and air handling units due a clean after building work.
Work in a small place like Green Tye starts with agreeing access and timings.
The paperwork matters as much as the work. Each visit is written up with pictures, listing what was done, anything we couldn’t reach and when the next visit is due. File it in your maintenance log so it’s ready for an insurer, fire officer or EHO.
- Place
- Green Tye (SG10)
- Wider area
- Hertfordshire
- Records
- Report and photos after the visit
- Price
- A fixed quote up front
- Hours
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Reviewed
- 30 October 2026
Keeping the system healthy
Good habits slow the build-up between visits. Our tips:
- Book the next check in line with the report
- Note any water around the unit or leaks below it
- Do not store bins or materials near the intake
- Make sure the unit’s access doors open easily
Photos in the report cover the filters, coils, drain tray, fan and casing, and note any part we couldn’t get to. It also notes faults we spotted, such as damaged panels or a blocked drain.
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.
The process
Your trading hours come first. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. When the team arrives, the work area is protected and the relevant equipment is switched off to cool, and the work takes from a few hours for a compact unit to a day or more for a large one. Somewhere as small as Green Tye, the date and timings are agreed with you well before the day.
- We agree a shutdown window that suits the building.
- We take before pictures of each section of the unit.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- The fan and drain tray are cleaned and the drain checked.
- After photos are taken and the certificate issued.
How to prepare
- Tell us about site rules, permits or sign-in
- Tell us where we can park and unload
- Let us know when the site is closed or quiet
Getting a quote
Some systems can be priced from pictures; others need a survey. 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.
Advice
Different parts, different methods
Filters
Dirty filters cut airflow and let dirt slip past their frames. The filter section is cleaned so new or cleaned filters sit properly.
Internal casing and panels
Damaged internal linings or loose panels can shed material into the air. Anything like that is recorded with photos.
Landlords, agents and facilities managers
Managing agents often deal with us directly. Send the address, what’s needed and how access works, and we’ll send a fixed quote.
We work for landlords, managing agents and facilities managers as well as the people running the site. Where a system serves more than one tenant, such as a shared riser, it helps to agree who arranges the work, and we’re happy to quote for all of it.
Places near Green Tye
What else we do in Green Tye
Staff cleaning versus specialist work
Logging matters as much as cleaning. A dated log of in-house cleaning and checks shows an inspector that the system is looked after between visits, alongside our reports.
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.
Why act early in Green Tye
Standing water in a drain tray does not clear itself. Left alone, it can overflow, leak into the plant area or ceiling below and spread smells through the system. Dealing with it early keeps the clean straightforward. Equipment tucked in a roof space or outbuilding near Green Tye rarely gets looked at unless someone books it.
What you pay depends on the size of the system, what state it’s in and how easy it is to reach. You get a fixed price before any work starts, so there are no surprises.
Why book with us
- Out-of-hours work and a 24/7 emergency line
- Fully insured
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- One contact for all your sites in London and the South East
Read our cost guide or how to check a contractor.
Questions from Green Tye
Can the work in Green Tye be done at night or at weekends?
Yes, evening, overnight and weekend work is normal for us. The work in Green Tye can fit around your hours. Tell us your opening hours when you ask for a quote.
Can a school’s ventilation in Green Tye be done out of term time?
Yes. The holidays are the usual time for school work. The FSA’s register shows about 2 schools and colleges with food registrations within roughly a mile and a half of Green Tye. You can call us on 0345 646 2711, or send details by email with the dates the site is empty.
Can you clean the ducts connected to the AHU?
Yes, supply and extract ducts, grilles and diffusers. The survey shows whether the ducts need cleaning now.
How much does AHU cleaning cost?
The cost depends on the size of the system, its condition, access and timing. Ask us for a fixed quote, normally ready within one working day.
Can you fix a faulty AHU?
Motors, belts, controls and coils that need repair are a job for your maintenance contractor. We will flag anything we notice during the clean.
What do you do with what you remove?
It’s contained and taken away. Grease, debris and waste water are collected as the work goes on, so it doesn’t spread.
How much notice should we give?
Book as early as you can for planned work, especially if the next clean or test is due soon. For emergencies, we take calls 24/7.
Is there a report after cleaning?
Yes. You receive a certificate and a report showing each section before and after, with any faults we noticed.
AHU cleaning around Green Tye
Green Tye’s nearest hospital, Herts and Essex Hospital, is about 3.6 miles north-east. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. About 25 miles out from central London, Green Tye is part of the South East area we work across. We work evenings, overnight and at weekends, so the visit fits around the site.
For buildings in and around Green Tye, TR19® Air cleaning starts with an inspection. Hospitals such as Herts and Essex Hospital (about 3.6 miles north-east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Green Tye are no different.
Green Tye is about 3 miles south-west of Bishop's Stortford, in Hertfordshire. Wherever you are in the SG10 postcode area, we cover AHU cleaning for commercial sites. Green Tye is one of 381 places in Hertfordshire where we work for AHU cleaning. For sites nearby, see our Chelmsford page, about 18 miles away.
We cover every part of SG10 for AHU cleaning and the roads nearby. Other places close to Green Tye include Hadham Cross (1 mile west), Much Hadham (1 mile north-west), Nether Street (2 miles south-west), Hadham Ford (2 miles north) and Widford (2 miles south-west). Within a short drive, we also cover Stevenage (13 miles west), Bishop's Stortford (3 miles north-east), Welwyn Garden City (13 miles west), Hoddesdon (8 miles south-west), Cheshunt (11 miles south-west) and Hatfield (15 miles west).
Near you in Green Tye
For rail, the closest station is Bishops Stortford station, roughly 3.2 miles north-east. A little further out are Herts and Essex Hospital (3.6 miles north-east) and Henry Moore Studios and Gardens (0.8 miles south-west). Open spaces near Green Tye include Thorley Wash nature reserve.
How we price AHU cleaning
There’s no set price list, because sites vary so much. The quote depends on:
- One-off work versus a regular cycle
- Travel, parking and unloading
- Site requirements such as sign-in and permits
- When the work can happen, such as evenings, overnight or weekends
A single site or a whole portfolio, we price it on the same basis: what needs doing, how we get to it and when. The price is fixed before we start.
Asking for a quote
Photos and a few facts are often enough to price the work. Send what you can of the following:
- The times we could work without disrupting the site
- Detail shots of panels, filters and grilles
- Problems your staff have spotted
- Photos showing the whole system and its surroundings
For AHU cleaning in Green Tye, call us on 0345 646 2711 or drop us a line. Tell us what kind of premises it is and when it’s open, plus photos or the previous report if they’re to hand. A fixed quote normally follows within one working day.