Hertfordshire · Air handling unit cleaning
Thundridge AHU cleaning
AHU cleaning in Thundridge, surveyed first and signed off with a written report and photos. Ask us for a fixed quote.
- Air handling units never cleaned inside
- Fan sections that haven’t been cleaned in years
- Stale or musty smells from the ventilation
How the job changes from site to site
Filters
Every AHU relies on its filters to catch dust before it reaches the coils. As part of the clean, filters are checked and cleaned or replaced as agreed, and the housing around them is cleaned too.
Drain trays
Older trays can corrode and start leaking. Their condition goes into the report with photos so you can decide on any repairs.
AHU cleaning for kitchens and businesses in Thundridge
A cooling coil drips condensate into a tray that should drain away. If the outlet blocks, standing water and slime build up, in the airstream that feeds the building. Cleaning and clearing it is a key part of the job. The work covers filter sections, drain trays and internal panels, and people most often call us about air handling units due a clean after building work and coils clogged with dust and debris.
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.
Nothing is signed off by word of mouth: a dated report with pictures of the work, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. Any parts we couldn’t reach are recorded on it too.
- Place
- Thundridge (SG12)
- Wider area
- Hertfordshire
- Paperwork
- Photo report after every visit
- Price
- Fixed quote, usually within a working day
- Working hours
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
Why deal with it now?
Tenants, auditors and owners may want proof that the air handling plant is kept clean. A TR19® certificate and photo report give you that, ready to show anyone who asks. Equipment tucked in a roof space or outbuilding near Thundridge rarely gets looked at unless someone books it.
Whatever the type of site, the quote works the same way: the size of the job, access, condition and working hours. Call for a fixed quote and we will explain each part.
What you get with us
- Fixed quotes, usually within one working day
- One contact for all your sites in London and the South East
- Full insurance on every job
- Trading since 2009
Read how cleaning jobs are priced and how to check a contractor.
Landlords, agents and facilities managers
Running several sites is easier with one contractor. We cover South East England and London, so a run of sites can go into one programme and kept to a regular schedule.
We regularly work with managing agents. Send the address, what’s needed and how access works and we’ll come back with a fixed quote.
Common questions in Thundridge
Will you come out to Thundridge?
Yes, we work in villages as well as towns, and Thundridge is covered. Just mention lanes, gates or anything else about the site when you book.
Do you work overnight in Thundridge?
Yes, we can come after you close and finish before you open. That way a site in Thundridge does not have to lose a day’s trading. Tell us your opening hours when you ask for a quote.
Can you come out in an emergency?
Yes, any time. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line and we will talk you through the next steps.
Are you insured?
Yes. We carry full insurance, and we have been trading since 2009.
Can one contract cover all our sites?
Yes. Send the list of sites and the work at each and you will get one fixed quote.
How far ahead should we book?
It depends on the time you need and how big the job is. Mention your preferred dates with your enquiry, and for anything urgent, ring our 24/7 emergency line.
What’s TR19?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It covers how systems are inspected, cleaned and checked and expects a risk-based approach.
How long does it take to clean an air handling unit?
Typically the clean takes a single shift for a typical unit, longer for large or heavily soiled ones. The shutdown is planned to fit, including evenings or weekends.
Signs you need AHU cleaning in Thundridge
Cooling coils create condensation, and that water has to go somewhere. If the drain tray outlet blocks or the tray does not fall properly, water stands in it, and slime and smells soon follow.
Signs it’s time to call us include:
- Dirty filters cutting the airflow
- Condensate trays that won’t empty
- Intake sections clogged with outdoor debris
- Air handling units never cleaned inside
Wherever a school like Thundridge Church of England Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
What to look for in a quote
- Whether the quote shows VAT
- Whether a written report and pictures are included
- Whether the quote is based on a survey or pictures
- If the quote is a fixed price or an estimate
What we do, step by step
We turn up at the time agreed with you, which is often after service, overnight or at a weekend. Equipment that has to be off is switched off and allowed to cool first, and the area around the work is covered and protected. The work itself takes anything from half a day for one small unit to several shifts for a plant room full of them. Visits to a village like Thundridge are booked in advance, at a time that suits whoever runs the site.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- We clean the coils and clear the tray and drain.
- We close every panel, hand the unit back and send the report and certificate.
Getting ready for the visit
- Clear loose items from the work area
- Plan for cooking equipment or plant to be off before we arrive
- Arrange a key holder or contact on site
How to get a quote
For AHU cleaning in Thundridge, give us a ring on 0345 646 2711 or email us. Tell us what kind of premises it is and when it’s open, plus photos or the previous report if they’re to hand. We usually send a fixed quote within one working day.
Advice
What AHU cleaning looks like in Thundridge
The FSA’s food hygiene register lists about 7 schools, colleges and universities, about 3 caring premises (care homes, nurseries and hospitals) and about 3 hotels and B&Bs with registered kitchens or food service within about 1.5 miles of central Thundridge. Busy, occupied buildings like these are where clean supply air matters most. About 23 miles out from central London, Thundridge is part of the South East area we work across. The visit is fixed around your opening hours, not ours. About 3.6 miles south-west of Thundridge is Hertford County Hospital, the nearest hospital. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.
Hospitals such as Hertford County Hospital (about 3.6 miles south-west) show how much a building can rely on clean ventilation, and smaller healthcare sites near Thundridge are no different.
Thundridge is about 1 mile north of Ware, in Hertfordshire. Across the SG12 area, we cover AHU cleaning for commercial sites. We cover 381 places across Hertfordshire, large and small. There’s also a page for London, about 23 miles away.
Work in SG12 follows the same survey, fixed quote and written report as everywhere else we cover. We cover sites on Woodlands Road, Cold Christmas Lane and Ducketts Wood and the roads around them. Close by, we work in Wadesmill (1 mile north), Cold Christmas (1 mile east), High Cross (1 mile north), Ware (1 mile south) and Tonwell (2 miles west). Further out, we also cover Stevenage (8 miles north-west), St Albans (14 miles south-west), Bishop's Stortford (8 miles east), Welwyn Garden City (7 miles west), Harpenden (14 miles west) and Hitchin (13 miles north-west).
Landmarks near Thundridge
Typical jobs here are in premises near Sow & Pigs pub and The Chauncy School and the streets around them. The closest station to Thundridge is Ware station, about 1.8 miles south. Other landmarks nearby include Hertford County Hospital (3.6 miles south-west) and Barrowfield (2.5 miles south). Not far away are King's Meads.
Towns and villages near Thundridge
Other services in Thundridge
What staff can safely do
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, they should report it rather than try to fix it. We can diagnose it and quote.
Staff cleaning doesn’t replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but hidden parts of the system still need specialist attention.
What AHU cleaning cannot fix
Not every problem is solved by AHU cleaning, and we’d rather say so up front. It doesn’t solve:
- Building management system faults
- Ventilation that was badly designed in the first place
- Leaking heating or cooling coils
If you’re not sure, just call us on 0345 646 2711 or use the quote form and we will give you a straight answer.
What we work on in Thundridge
- Supply and extract fans
- Heating and cooling coils
- Filter sections
- Drain trays
- Internal panels
- Dampers and louvres