Medway · Air handling unit cleaning
Air handling unit cleaning in Capstone, Medway
AHU cleaning for businesses, landlords and public buildings in Capstone. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Units needing a clean before a new tenant or handover
- Air handling units never cleaned inside
- Blocked condensate drains and slimy trays
About our AHU cleaning in Capstone
No two plant rooms are the same, whether it’s a compact unit in a ceiling void or a big unit on the roof. Every job starts with a survey, from photos or on site, followed by a fixed quote before any cleaning starts. If you’re dealing with dirty fans and fan housings and dirty coils holding back the airflow, we can help.
For a building in or near Capstone, access is agreed in advance and the visit is planned around the journey, and the ventilation is inspected, cleaned and recorded the same as anywhere.
A written report with photos follows each visit, so there’s a dated record of the work. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Where
- Capstone (ME7)
- Wider area
- Medway
- Paperwork
- Written report with photos
- Quote
- A fixed quote up front
- Hours
- After hours by arrangement; emergencies any time
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
What happens if it’s left?
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. Clearing it now is a much smaller job. Equipment tucked in a roof space or outbuilding near Capstone rarely gets looked at unless someone books it.
When the work has to happen, how we reach it and how big the site is all affect the cost. We take each of them into account and give you a fixed price before any work starts.
Why choose Duct Doctor in Capstone
- A written report with pictures after every visit
- Trading since 2009
- Full insurance on every job
- CHAS and SafeContractor accredited, with ISO 9001
Take a look at our cost guide and our accreditations.
How it works
We work around your opening hours, not the other way round. 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. A quick note on how to find the site and where to park makes a visit to Capstone run smoothly.
- First we agree when the unit can be switched off, including evenings or weekends.
- 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 photos and issue the certificate and report.
Preparing for the visit
- Tell us the best time to work, such as after service or at a weekend
- Allow time for equipment near the work to be turned off and cool down
- Let us know about parking and loading
Getting a quote
Getting a quote does not take long. Call or email with a few details and you will usually have a fixed price within one working day. Where a survey is needed, we arrange a time that suits the site.
Advice
Capstone buildings and their air
The FSA’s food hygiene register lists about 12 schools, colleges and universities and about 20 care, childcare and hospital premises with registered kitchens or food service across Capstone and its immediate surroundings (about a mile and a half). Busy, occupied buildings like these are where clean supply air matters most. Capstone, about 30 miles from central London, is within our usual area. Evening, overnight and weekend visits are all possible. Medway Maritime Hospital is the nearest hospital, about 1.7 miles north-west of Capstone. Clean air matters most where people are unwell, and that is as true in a care home as in a hospital.
Healthcare buildings such as Medway Maritime Hospital, about 1.7 miles north-west, depend on their ventilation; if you manage a surgery, clinic or care home near Capstone, yours matters too.
Capstone is about 1 mile south-west of Gillingham, in Medway. Whatever kind of site you run in Capstone, AHU cleaning is something we can help with. Visits can be booked for evenings, overnight or weekends so trading isn’t interrupted. Capstone is one of 68 towns, villages and districts in Medway where we work for commercial clients. Maidstone is in our area too, around 6 miles away.
Postcode districts we cover here for AHU cleaning: ME7. Close by, we work in Darland (1 mile north), Hale (1 mile north-west), Hempstead (1 mile south-east), Gillingham (1 mile north-east) and Chatham (1 mile west). Larger places within reach include Rochester (4 miles north-west), Strood (4 miles north-west), Hoo St Werburgh (5 miles north), Rochester Riverside (3 miles north-west), Peters Village (4 miles west) and Brompton (3 miles north-west).
Landmarks near Capstone
Typical jobs here are in premises near Chatham Grammar School for Girls, The Star pub and The Robert Napier School, among other places. The closest station to Capstone is Gillingham (Kent) station, about 2 miles north. A little further out are Medway Maritime Hospital (1.7 miles north-west) and Pentagon Shopping Centre (2.3 miles north-west). Green spaces nearby include Burham Down and Blue Bell Hill.
Also in Capstone
Do you need AHU cleaning in Capstone?
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.
What we’re most often called out for:
- Coils clogged with dust and debris
- Odours coming through the supply air
- Debris and leaves in the fresh air intake
- Dust built up on fan impellers
Classrooms and halls at schools such as Hempstead Infant School are easiest to work in when pupils are away.
What to look for in a quote
- Whether the work can be done while the site is closed
- If they look at the system before pricing
- Whether the whole system is included, or only the parts that are easy to reach
- Proof of accreditation you can verify
Looking after it afterwards
Think of this as the after-treatment advice, short and simple:
- Diary the inspection date recommended in the report
- Make sure the unit’s access doors open easily
- Do not ignore odours coming through the grilles
- Change filters on schedule and log each change
Photos in the report cover the filters, coils, drain tray, fan and casing, and note any part we couldn’t get to. Any defects we noticed, like a leaking tray or damaged lining, are listed.
Make the drain tray part of every maintenance visit. Catching a slow drain early stops standing water building up.
Capstone: your questions answered
Do you work at weekends in Capstone?
Yes, we can come after you close and finish before you open. It means the site in Capstone keeps running as normal. Let us know the hours you’re closed and we’ll book within them.
Is Capstone within the area you cover?
Yes, smaller places are covered as well as towns. Let us know about access, parking and anything unusual about getting there when you book.
What does AHU cleaning cost?
It depends on the site, so we quote each one individually. To get one, call us on 0345 646 2711, or email photos with the site type, opening hours and a few photos.
Do you work with multi-site operators?
Yes. You deal with one contact for every site across London and the South East, with visits on a regular schedule.
Are you insured?
Yes. We’re fully insured, and we can share the details when you need them.
When should our AHU next be cleaned?
Inspection under TR19® Air decides it. A hard-working unit, or one serving a hospital or care home, may need cleaning more often.
Do you need to switch the unit off?
Yes. The unit has to be shut down and isolated before it’s opened. The shutdown is planned with whoever runs the building.
Do you offer maintenance contracts?
Yes. Regular plans can run on 3, 6 or 12-monthly cycles, to suit the system and how it’s used.
When something else is needed
A few issues sit outside what this work can do:
- Dirty ducts beyond the unit itself
- Coils that are corroded or leaking and need replacing
- Controls and BMS settings that run the unit
If in doubt, give us a ring on 0345 646 2711, or send details by email and we’ll say what we think before you book.
What we work on in Capstone
- Dampers and louvres
- Filter sections
- Internal panels
- Supply and extract fans
- Drain trays
- Heating and cooling coils
Multi-site and managed buildings
We work for landlords, managing agents and facilities managers as well as the people running the site. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we are happy to quote for all of it.
Running several sites is easier with one contractor. We work across London and the South East, so visits at different addresses can be planned together and kept to a regular schedule.
What affects the cost of AHU cleaning
Before we fix a price, we need to know a few things. We check:
- When the work can happen, such as evenings, overnight or weekends
- Travel, parking and unloading
- Whether it’s a one-off visit or part of a schedule
- Access, including roofs, risers and ceiling voids
Whatever the type of site, the quote works the same way: how much there is, how we reach it, what state it’s in and when we can work. Call for a fixed quote and we’ll go through it with you.
What we need to know
When you contact us, these details help:
- Your opening hours and when the area is out of use
- Close-ups of filters, grilles, hatches or access panels
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- The paperwork from the last visit, if you have it
Every quote begins with a look at the system, from your pictures and details or, where that is not enough, a survey on site. Then we send a fixed price so you know the cost before any work starts.