Hertfordshire · Air handling unit cleaning
Air handling unit cleaning in Kimpton, Hertfordshire
One call covers cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Kimpton: survey, fixed quote, work and sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Dust-coated heating and cooling coils
- Air handling units due a clean after building work
- Odours coming through the supply air
How we handle AHU cleaning in Kimpton
Where a building in Kimpton has had little more than filter changes, the coils, fan and casing can be carrying far more dirt than anyone has seen. A full AHU clean takes in the whole unit. Typical jobs include debris and leaves in the fresh air intake and dust built up on fan impellers, on internal panels, dampers and louvres and heating and cooling coils.
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.
We’re CHAS and SafeContractor accredited, we hold ISO 9001 and we are fully insured. On top of that, we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, trading since 2009.
- Location
- Kimpton (SG4)
- Wider area
- Hertfordshire
- Records
- Photo report after each visit
- Quote
- A fixed quote up front
- Working hours
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Checked
- 30 October 2026
Common questions in Kimpton
Can you get to a site in Kimpton?
Yes, we work in villages as well as towns, and Kimpton is covered. A survey first, from pictures or a visit, means we arrive with the right kit.
Can a school’s ventilation in Kimpton be done out of term time?
Yes, and it’s the easiest time to do it. There are about 3 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Kimpton. Send us your term dates when you call us on 0345 646 2711 or use the quote form, and we will fit the work in.
Which parts of an air handling unit do you clean?
All the internal parts the air touches, from the intake and filters through the coils and fan to the outlet. You get a photo report showing each part before and after.
What if parts of the system can’t be reached?
We record them on the report, with photos where possible, and we tell you what would make it reachable, for example new access panels.
Do you offer emergency callouts?
Yes. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line, and we’ll advise on what to do next.
Which accreditations do you hold?
We hold CHAS, SafeContractor and ISO 9001, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Will we get paperwork for the AHU clean?
Yes. You get a TR19® certificate plus before and after pictures. Keep them in the maintenance log.
How long will the unit be out of action?
It takes a single shift for a typical unit, longer for large or heavily soiled ones. Size, layout and how dirty it is decide the rest, and the quote will give you a clear idea.
How it works
We start by comparing what we find with the survey or your photos. If anything is different, we talk it through with the person on site before carrying on. From there, it takes anything from half a day for one small unit to several shifts for a plant room full of them. Seeing the system in pictures first means the trip to Kimpton can be planned properly.
- We look at the unit and the plant area during the survey.
- 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.
- The unit is closed up and handed back, with a report to follow.
Preparing for the visit
- Arrange a key holder or contact on site
- Find the previous report, if there is one
- Let us know about permits to work or site inductions
Get a fixed quote
Here’s what helps us quote: where the site is, what it is and its opening hours, a few pictures and any previous report or certificate. Once you have those, ring 0345 646 2711, or send details by email.
Related advice
What AHU cleaning looks like in Kimpton
The FSA’s food hygiene register lists about 3 schools, colleges and universities with registered kitchens or food service across Kimpton and its immediate surroundings (about a mile and a half). Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. We cover Kimpton, about 26 miles from central London, as part of our work across London and the South East. Evening, overnight and weekend visits are all possible.
In Kimpton, we look inside the system before deciding what needs cleaning.
Kimpton is about 3 miles north-east of Harpenden, in Hertfordshire. For AHU cleaning in and around Kimpton, it’s easy to get a fixed quote: please call us on 0345 646 2711 or drop us a line. Our area covers London and the South East, Kimpton included. Kimpton is one of 381 places in Hertfordshire where we work for commercial clients. Our Milton Keynes page covers sites nearby (24 miles or so).
AHU cleaning in SG4 follows the same survey, fixed quote and written report as everywhere else we cover. We cover sites on High Street, Hampden and Wheelwrights and nearby roads. If your site is just outside Kimpton, we cover Gustard Wood (2 miles south), Whitwell (2 miles north), Ayot St Lawrence (2 miles south-east), Codicote Bottom (2 miles east) and Codicote (3 miles east). Further out, we also cover Watford (14 miles south), Hemel Hempstead (10 miles south-west), Stevenage (6 miles north-east), St Albans (7 miles south), Welwyn Garden City (6 miles south-east) and Harpenden (3 miles south-west).
Around Kimpton
Typical jobs here are in premises near The Boot pub. The closest station to Kimpton is Harpenden station, roughly 3.4 miles south-west. A little further out are Harpenden Museum (3.6 miles south-west). Green spaces nearby include Stocking Springs Wood.
Part by part
Heating and cooling coils
Because cooling coils run wet, the dirt on them tends to cling. We clean the coil and the tray beneath it together.
Drain trays
Condensate from the coil drips into a tray beneath it. We clear standing water, clean out slime and check the outlet is draining.
What staff can safely do
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. What they cannot safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
Good housekeeping makes our visits easier, not unnecessary. Clean filters and tidy surfaces slow the build-up, but hidden parts of the system still need specialist attention.
Signs you need AHU cleaning in Kimpton
No filter stops everything. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
Most sites get in touch when they notice something like this:
- Plant that needs cleaning after a refit
- Dirty fans and fan housings
- Leaves and litter drawn into the unit
- Dirty filters cutting the airflow
If you manage a school such as Kimpton Primary School, ventilation cleaning is best booked for the holidays.
Questions to ask before you book
- Whether the quote shows VAT
- If the quote is a fixed price or an estimate
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- Whether a written report and pictures are included
Keeping the system healthy
Aftercare is simple, and it makes the next visit easier:
- Make sure condensate is draining away
- Keep inspection doors on the unit in good order
- Keep the certificate and photo report with the plant records
- Clear leaves and litter away from the intake
When we’ve closed the unit up, it can be restarted with your site team. Keep an eye on the condensate drain over the next few days to make sure it stays clear.
Keep the area around the intake clear. What’s near the intake ends up in the unit.
Towns and villages near Kimpton
More services for Kimpton
What happens if it’s left?
Dirt left in an air handling unit does not stay in the unit. It’s carried through the ductwork and out of the grilles, which is why the unit and the ducts are best cleaned together. Rural sites can’t always move to another kitchen or room when something fails.
Several systems or sites on one quote can make for a more efficient booking. Mention every system or site you need covered, and you’ll get one fixed quote.
Why book with us
- We diagnose before we treat
- One contact for all your sites in London and the South East
- Each visit written up, with pictures
- Accredited under CHAS and SafeContractor, with ISO 9001
Read our cost guide or our accreditations.
When it’s something else
We’d rather tell you now than book work that won’t help, so these are the things it won’t cover:
- Dirty ducts beyond the unit itself
- Leaking heating or cooling coils
- Breakdowns that need a mechanical engineer
If in doubt, call us on 0345 646 2711 or email us and we’ll say what we think before booking.
Where we work
- Filter sections
- Heating and cooling coils
- Dampers and louvres
- Internal panels
- Drain trays
- Supply and extract fans