Hertfordshire · Air handling unit cleaning
Air handling unit cleaning in Gosmore, Hertfordshire
For cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Gosmore, one call is all it takes: survey, fixed quote, work and sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Plant that has been serviced but not cleaned
- Rooms that smell stuffy when the system runs
- Coils clogged with dust and debris
Gosmore: your questions answered
Do you clean school ventilation in Gosmore in the holidays?
Yes, and it’s the easiest time to do it. Food Standards Agency records list about 13 schools, colleges and universities with registered kitchens within about a mile and a half of Gosmore. You can call us on 0345 646 2711 or email us with the dates the site is empty.
Can you work in Gosmore outside opening hours?
Yes, we can come after you close and finish before you open. It means the site in Gosmore keeps running as normal. Just give us a ring on 0345 646 2711, or send details by email with your opening times and we’ll plan around them.
Do you repair air handling units?
Mechanical repairs to the unit are for your HVAC maintenance contractor. We’ll flag anything we notice during the clean.
Do you offer maintenance contracts?
Yes. Scheduled maintenance plans are part of what we do, set at the interval the system needs. The report from each visit recommends the next date.
Is a quote from photos possible?
Yes, for many jobs. Send a few wide pictures plus close-ups of panels, filters or grilles, and we typically come back within one working day. If photos are not enough, we’ll survey first.
Do you work with multi-site operators?
Yes. We work across South East England and London, so we can schedule a run of sites as one programme. Each site gets its own report and photos.
Which sectors do you work in?
We work for restaurants, pubs, hotels, schools, colleges, hospitals, care homes, offices and shops, plus food production and leisure sites.
What do you do with what you remove?
It leaves the site with us at the end of the visit. While we work, it’s kept contained so the area stays clean.
AHU cleaning in Gosmore, done properly
Think of an AHU clean as a full check-up for the ventilation. Every section is opened, cleaned and photographed, so you can see the unit’s condition for yourself. If you have leaves and litter drawn into the unit and plant that needs cleaning after a refit, we can help, from supply and extract fans, drain trays and heating and cooling coils onwards.
Rural buildings with mechanical ventilation, such as care homes and country hotels, often keep their units in roof spaces or outbuildings, which makes them easy to overlook.
The sign-off is always in writing: a dated report with photos of the work, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. It shows what was done and what, if anything, couldn’t be reached.
- Place
- Gosmore (SG4)
- Wider area
- Hertfordshire
- Reporting
- Written report with pictures
- Price
- Fixed quote, typically within a working day
- Hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
Landlords, agents and facilities managers
When the building owner and the occupier are different, the lease normally sets out who maintains what. We’re happy to deal with either side and send the paperwork to whoever needs it.
Multi-site operators often want one contractor and one number. We cover South East England and London, so a run of sites can go into one programme and kept on a regular cycle.
Keeping the system healthy
No system stays clean for ever, but care slows the build-up. Our tips:
- Stick to the filter change plan
- Keep the certificate and photo report with the plant records
- Flag stale or damp smells in the supply air
- Report water on the plant room floor
You receive a TR19® certificate and a photo report after the clean. Keep both with the building’s maintenance records.
Regular filter changes are the best protection an AHU has. Overloaded filters let more dirt through to the coils and fan.
How we price AHU cleaning
The quote reflects the site in front of us. We consider:
- One-off work versus a regular cycle
- What state the system is in
- The number of sites or systems
- The scale of the work
What you pay depends on how big the system is, what state it’s in and how easy it is to reach. You get a fixed price before we start, so there are no surprises.
Helping us quote
A few details help us quote accurately. When you get in touch, it helps to send:
- Problems your staff have spotted
- The postcode and the type of business
- Close-ups of filters, grilles, hatches or access panels
- The times we could work without disrupting the site
Quoting starts with a diagnosis, from your pictures and details or, where that isn’t enough, a survey on site. Then we send a fixed price so you know the cost before work begins.
AHU cleaning around Gosmore
The FSA’s food hygiene register lists about 13 schools, colleges and universities, about 21 care, childcare and hospital premises and about 4 hotels and guest houses with registered kitchens or food service in Gosmore and the streets around it, up to about 1.5 miles out. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. For Gosmore, the closest hospital is Lister Hospital, roughly 2.6 miles east. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. About 31 miles out from central London, Gosmore is part of the South East area we work across. Visits are booked around your hours, evenings and weekends included.
Lister Hospital, about 2.6 miles east, is the nearest hospital to Gosmore, and healthcare sites of every size need their supply air kept clean. Wherever a school like St Ippolyts Church of England Aided Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Gosmore is about 1 mile south of Hitchin, in Hertfordshire. Gosmore gets the same approach as every site we work on: diagnosis first, a fixed price, out-of-hours working where needed and a written report with pictures. Our area takes in 381 places across Hertfordshire, from busy centres to quieter spots. Our Milton Keynes page covers sites nearby, about 22 miles away.
AHU cleaning in SG4 follows the same survey, fixed quote and written report as everywhere else we cover. If you need AHU cleaning at premises on London Road, Mill Lane and Orchard Close or a nearby road, we can help. We also cover the places around Gosmore: St Ippolyts (1 mile east), St Ibbs (1 mile south-east), Sperberry Hill (1 mile south-east), Charlton (1 mile north-west) and Little Almshoe (1 mile south-east). We also work in nearby towns such as Hemel Hempstead (15 miles south-west), Stevenage (4 miles south-east), St Albans (13 miles south), Welwyn Garden City (10 miles south), Harpenden (9 miles south-west) and Hatfield (12 miles south).
Near you in Gosmore
Around Gosmore, our work takes us to kitchens and buildings near St Mary's Church, Butts Close and The Bird in Hand pub. Other local landmarks include Hitchin Girls' School (1.1 miles north) and Kingshott School (0.8 miles north-east). The closest station to Gosmore is Hitchin station, about 1.5 miles north of the centre. A little further out are North Hertfordshire Museum (1.3 miles north) and Wymondley Castle (1.7 miles east). For a walk, there’s Markham's Hill and Purwell Ninesprings.
How it works
A visit follows the same order every time: sheeting and protection first, isolate whatever needs isolating, do the work, tidy up and hand over the paperwork. On site, the work takes anything from half a day for one small unit to several shifts for a plant room full of them. We agree a date with you, plan the drive to Gosmore and turn up when the site is quiet.
- 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.
- We finish with the fan section and the drain tray.
- We take after pictures and issue the certificate and report.
Getting ready for the visit
- Plan for cooking equipment or plant to be off before we arrive
- Make sure someone can let us in and lock up afterwards
- Move anything stored near the system
How to get a quote
Here’s what helps us quote: the address, the type of site and when it’s open, pictures of the system and any previous report or certificate. Once you have those, ring 0345 646 2711, or send details by email.
Related advice
Part by part
Internal casing and panels
Access doors and panels are opened in turn and closed properly afterwards, and check every one is shut.
Rooftop and plant room units
Units outside are exposed to weather and windblown debris. The intake section gets particular attention.
Leave it or put it right?
A light clean now is simpler than a heavy one later. Years of build-up make the job longer and harder, especially where there’s been moisture. It’s simpler to plan the work at Gosmore now than to arrange it in a hurry later.
When the work has to happen, how we reach it and how big the site is can all change the price. Each of those is built into the quote, and the price is fixed before we start.
Why Gosmore businesses choose us
- Accredited under CHAS and SafeContractor, with ISO 9001
- Survey first, then a fixed quote
- One number for every site across the South East and London
- Photo reports with every job
Also near Gosmore
Other services in Gosmore
What AHU cleaning cannot fix
To be straight with you, some problems need a different fix:
- Breakdowns that need a mechanical engineer
- A system that is undersized for the building
- Leaking heating or cooling coils
If in doubt, ring 0345 646 2711, or email photos and we will say what we think.
Parts of the system we cover
- Drain trays
- Heating and cooling coils
- Filter sections
- Dampers and louvres
- Internal panels
- Supply and extract fans