Kent · Air handling unit cleaning
Air handling unit cleaning in Hersden, Kent
Looking for AHU cleaning in Hersden? We survey first, send you a fixed quote and work around your opening hours, finishing with a written report and photos.
- Dust built up on fan impellers
- Debris and leaves in the fresh air intake
- Plant that needs cleaning after a refit
How we price AHU cleaning
Your quote is based on your site. We consider:
- How big the system is
- Travel, parking and unloading
- How easy every part is to reach
- The times the site is available
No two sites are the same, so we price each one individually. Size, access, the condition of the system and when we can work all play a part.
What we need to know
Photos let us diagnose from a distance. Try to include:
- The paperwork from the last visit, if you have it
- Wide pictures of the system and the area around it
- Close-ups of filters, grilles, hatches or access panels
- How we’d reach plant on a roof or in a plant room
The quickest way to a quote is to send pictures: the system from a couple of angles, plus any access panels or hatches. Add the site type and your opening hours, and many jobs can be priced from that alone.
AHU cleaning in Hersden, done properly
Every supply and extract system relies on the air handling unit at its centre: it draws air in, filters it, heats or cools it and pushes it round the ductwork. Whatever builds up inside it travels with that air, so cleaning the unit matters as much as cleaning the ducts. If you are dealing with blocked condensate drains and slimy trays and dirty fans and fan housings, we can help.
Around a place like Hersden, ventilation systems tend to be in schools, surgeries, care homes and workplaces. Smaller systems still gather dust and need inspecting.
The sign-off is always in writing: a written report, dated and illustrated with pictures, plus a certificate through the BESCA Vent Hygiene Elite portal when the work is a TR19® Grease clean. Any parts we couldn’t reach are recorded on it too.
- Location
- Hersden (CT3)
- Wider area
- Kent
- Records
- Photo report after every visit
- Quotes
- Fixed quote, normally within a working day
- Hours
- Overnight and weekend work, 24/7 emergency callout
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
Managing agents and facilities teams in Hersden
Whether it’s one building or many, the standard is the same: diagnosis, a fixed price, work booked around your hours and a written report with pictures.
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 to a regular schedule.
Also near Hersden
Other services in Hersden
Common questions in Hersden
Do you offer AHU cleaning in Hersden?
Yes. We work across London and the South East, and Hersden is part of that. Get in touch with the details and we will arrange a survey.
Do you work overnight in Hersden?
Yes, out-of-hours work is a big part of what we do. The site is handed back ready to open. Let us know the hours you are closed and we will book within them.
Do you clean the ductwork as well?
Yes. Ductwork is cleaned through access panels, with anything inaccessible recorded, with new panels fitted where necessary.
Do you offer emergency callouts?
Yes, any time. 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.
What’s included in an AHU clean?
Filters, coils, drain trays, the fan and the internal surfaces are all covered. What happens to the filters is agreed when we quote.
Can one contract cover all our sites?
Yes. Send the list of sites and the work at each and you’ll get one fixed quote.
What do you need from me for a quote?
A short description and a few pictures, with the address and opening hours. If we need more, we’ll ask.
Where does the waste go?
Waste is contained during the work and removed when we leave, including grease, debris and dirty water. None of it is left on site.
What happens if it’s left?
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. A visit arranged in advance is far less disruptive than a callout on a busy day.
Working hours, access and the scale of the site can all change the price. We take each of them into account and give you a fixed price before work begins.
Why choose Duct Doctor in Hersden
- Ventilation hygiene specialists since 2009
- CHAS and SafeContractor accredited, with ISO 9001
- Every job surveyed first
- Work around your opening hours, with 24/7 emergency cover
See what affects the cost and our accreditations.
Ventilation in Hersden buildings
Food Standards Agency records list about 7 care, childcare and hospital premises registered as food businesses within about 1.5 miles of central Hersden. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. For Hersden, the closest hospital is St Martins Hospital, roughly 3.4 miles south-west. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. Hersden, about 56 miles from central London, is within our usual area. The visit is fixed around your opening hours, not ours.
Wherever a school like Hersden Village Primary School has ducted ventilation, a half-term visit keeps the work out of lesson time.
Hersden is about 4 miles south of Herne Bay, in Kent. If you need AHU cleaning in Hersden, it’s easy to get a fixed quote: please give us a ring on 0345 646 2711, or send details by email. Our area covers London and the South East, including Hersden. Hersden is one of 922 places in Kent we cover for AHU cleaning. For sites nearby, see our Maidstone page (28 miles or so).
We work across the CT3 postcode area for AHU cleaning and the roads nearby. Whether your site is on The Firs, The Sycamores and Chequer Tree Close or anywhere close by, we can help. If your site is just outside Hersden, we cover Westbere (1 mile south-west), Stodmarsh (1 mile south-east), Hoath (1 mile north), Knave's Ash (1 mile north) and Sturry (2 miles west). Within a short drive, we also cover Canterbury (4 miles south-west), Margate (11 miles north-east), Dover (14 miles south-east), Ramsgate (11 miles east), Broadstairs (12 miles east) and Whitstable (6 miles north-west).
Local landmarks in Hersden
We work in commercial kitchens and buildings around Frank Montgomery School, Spires Academy and Ye Olde Yew Tree Inn, among other places. The closest station to Hersden is Sturry station, roughly 1.9 miles south-west of the centre. Nearby you’ll also find Canterbury Castle (4.5 miles south-west) and St Martins Hospital (3.4 miles south-west). The countryside around Hersden includes West Blean and Thornden Woods.
When to call us in Hersden
It matters for two reasons: 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.
What we are most often called out for:
- Plant that needs cleaning after a refit
- Filters that are clogged or overdue
- Debris and leaves in the fresh air intake
- Dust built up on fan impellers
If you run a surgery, dental practice or care home near Hersden, clean ventilation matters as much to you as to a hospital like St Martins Hospital (about 3.4 miles south-west).
What to look for in a quote
- Whether they recommend a next date
- Which accreditations they hold, and whether you can check them
- What paperwork you get at the end
- Proof of insurance
The process
Each visit runs to the same pattern: protect the area, make the system safe, do the work, clear away and hand over the paperwork. On site, the work takes one overnight shift for many single units, with bigger plant phased. Visits to a place like Hersden are planned ahead, so we arrive with what the survey says the job needs.
- First the unit is surveyed, from pictures or a visit, and the scope agreed.
- The unit is shut down with your site team and the area protected.
- Filters, coils, fan section and casing are cleaned in turn.
- We clean out the drain tray and make sure it drains.
- A TR19® certificate and photo report follow the clean.
Before we arrive
- Dig out any earlier paperwork for the system
- Let us know about parking and loading
- Agree a time when the area can be out of use
How to get a quote
There’s no standard price list, because no two systems are the same. Instead, we look at your site first, from photos or a survey, then send a fixed quote. To get going, phone us on 0345 646 2711, or email photos.
Advice
Part by part
Rooftop and plant room units
Smaller units in ceiling voids are part of the work as well. We protect the area below before opening them.
Heating and cooling coils
Cooling coils stay damp in use, so dirt on them can turn sticky. We clean the coil and the tray beneath it together.
What staff can safely do
Staff cleaning and specialist work are not the same thing. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but grease that has passed the filters is out of reach. That part needs specialist access and equipment.
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but the parts you can’t see still need a specialist at the right interval.