Greater London · Air handling unit cleaning
AHU Cleaning in Sidcup
Professional AHU cleaning in and around Sidcup, timed so the site keeps working and signed off in writing with photos.
- Dirty fans and fan housings
- Stale or musty smells from the ventilation
- Air handling units with blocked filters
AHU cleaning in Sidcup
Units vary a lot in size, age and layout, from a small ceiling-mounted unit to a large rooftop plant. Every job starts with a survey, from photos or on site, followed by a fixed quote before any cleaning starts. The work covers drain trays, dampers and louvres and heating and cooling coils, and common reasons people get in touch are air handling units with blocked filters and dirty fans and fan housings.
London offices and flats often have ductwork added through successive refits, leaving sections that are hard to reach and seldom cleaned. In Sidcup, as elsewhere, cleaning starts with an inspection of what’s there.
The paperwork matters as much as the work. You get a written report with photos after every visit, covering the work done, any areas we couldn’t access and a recommended next date. Keep it with your fire safety records so it’s to hand when an insurer or inspector asks.
- Where
- Sidcup (DA14, DA15, SE9, DA5)
- Wider area
- Greater London
- Paperwork
- Report and photos after the visit
- Price
- A fixed price before work begins
- Hours
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Updated
- 30 October 2026
How we price AHU cleaning
Your quote is based on your site. We take into account:
- A single visit or a regular plan
- What state the system is in
- Whether we need access equipment or extra panels
- Where the site is and how we reach it
Leaving it longer rarely makes the work cheaper. Build-up, wear and faults tend to get worse, not better, and a neglected system can mean more work. If you are not sure what’s needed, call us on 0345 646 2711 or drop us a line and we will give you an honest view and a fixed quote.
What to send for a quote
Photos and a few facts are often enough to price the work. Useful things to send:
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- A few general shots of the system
- Where the site is and what kind of site it is
- Any previous report or certificate
Want a quote for AHU cleaning? Please call 0345 646 2711 or send us an email and tell us about the site. We’ll talk you through the work and give you a fixed quote before anything is booked.
Nearby places to Sidcup
Also in Sidcup
When something else is needed
We’d rather tell you now than book work that won’t help, so these are the things it won’t cover:
- Breakdowns that need a mechanical engineer
- Dirty ducts beyond the unit itself
- Controls and BMS settings that run the unit
Not sure which it is? You can give us a ring on 0345 646 2711 or send us an email and we will tell you honestly.
Where we work
- Dampers and louvres
- Drain trays
- Heating and cooling coils
- Supply and extract fans
- Internal panels
- Filter sections
Landlords, agents and facilities managers
For anyone managing more than one site, we can schedule visits across all of them on one quote. Every building has its own written report, so records stay tidy.
Records are where multi-site compliance often slips. Each visit produces a dated report with pictures, ready to show insurers, fire officers or EHOs.
Questions from Sidcup
Do you work at weekends in Sidcup?
Yes, nights and weekends are routine for us. It means the site in Sidcup keeps running as normal. Your opening times are the first thing we ask for.
Do you do school ventilation cleaning in Sidcup in the summer holidays?
Yes, holiday work suits schools best. With about 29 schools and colleges on the FSA’s register within roughly a mile and a half of Sidcup, it pays to plan holiday dates ahead. Send us your term dates when you give us a ring on 0345 646 2711 or email us, and we’ll fit the work in.
What does TR19 mean?
BESA’s ventilation hygiene specification in two main parts: TR19® Grease for kitchen extracts and TR19® Air for supply and extract systems. It is not legislation, but it’s the standard people check against.
Can you come out in an emergency?
Yes, day and night, every day of the year. Office hours are Monday to Friday, 8am to 6pm, and the emergency line covers the rest.
How do you keep the site clean during the work?
Protection goes down first: floor sheeting and covers over nearby surfaces and equipment. We tidy up and take our waste away before we leave.
Can you fix a faulty AHU?
AHU cleaning is what we offer here, not mechanical repairs. Any faults we notice are recorded for your maintenance team to follow up.
What information do you need?
Only a few details: the address, the site type, your opening hours and how we reach the system. Photos and any previous paperwork make it quicker. Then give us a ring on 0345 646 2711 or email us.
How long will the unit be out of action?
The work takes a single shift for a typical unit, longer for large or heavily soiled ones. Large plant can be split over several shifts, and you can give us a ring on 0345 646 2711 or drop us a line to plan it.
What staff can safely do
Your own staff can handle the daily basics: wiping down canopy surfaces, cleaning filters and keeping a simple log. Inside the ducts, risers and fan is specialist work, which is where we come in.
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, they should report it rather than try to fix it. We can diagnose it and quote.
What AHU cleaning looks like in Sidcup
Going by the FSA’s register, there are about 29 schools, colleges and universities and about 56 care, childcare and hospital premises serving food within about 1.5 miles of central Sidcup. Busy, occupied buildings like these are where clean supply air matters most. Sidcup’s nearest hospital, Queen Mary's Hospital, is about 1 mile south. Clean air matters most where people are unwell, and that’s as true in a care home as in a hospital. Ventilation cleaning in London buildings is usually planned for evenings or weekends.
If you manage shops or offices close to Sidcup station, a TR19® Air inspection shows whether the ductwork needs cleaning. If you run a surgery, dental practice or care home near Sidcup, clean ventilation matters as much to you as to a hospital like Queen Mary's Hospital (about 1 mile south).
Sidcup is about 3 miles north of Orpington, in Greater London. Whether your site is in the middle of Sidcup or further out, we cover AHU cleaning for every kind of premises, from a single unit to a large public building. Sidcup is one of 764 places in Greater London where we work for AHU cleaning. We also work in London, about 10 miles from Sidcup.
Work in DA14, DA15, SE9 and DA5 is surveyed, quoted and booked the same way as anywhere else. That includes premises on Station Road, High Street and Jubilee Way and the roads around them. Sidcup sits on or near the A211 and A2001, which makes travel easy for evening and night visits. Neighbouring places we cover for AHU cleaning include Albany Park (1 mile south), Blendon (1 mile north-east), Foots Cray (1 mile south-east), Bexley (2 miles north-east) and North Cray (2 miles east). Further out, we also cover London (10 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (14 miles west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
What’s near Sidcup
We work in commercial kitchens and buildings around The Alma pub, Waring Park and Chislehurst and Sidcup Grammar School and the streets around them. Sidcup has its own railway station: Sidcup station. Other landmarks nearby include Queen Mary's Hospital (1 mile south) and Broadway Shopping Centre (2.4 miles north-east). The countryside around Sidcup includes Summer Hill and The Tarn.
Keeping the system healthy
Good habits slow the build-up between visits. A few tips:
- Plan the next inspection before the last report gets filed away
- Report water on the plant room floor
- Change filters on schedule and log each change
- Check the drain tray is emptying during routine visits
The ducts served by the unit may need attention too. Cleaning the unit and ducts together gives the best result, and we can survey both.
Check drain trays and condensate drains during routine maintenance. Catching a slow drain early stops standing water building up.
Do you need AHU cleaning in Sidcup?
Filters catch most of the dust, but not all of it. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
What we’re most often called out for:
- Blocked condensate drains and slimy trays
- Air handling units with blocked filters
- Coils clogged with dust and debris
- Plant that has been serviced but not cleaned
If you manage a school such as Birkbeck Primary School, ventilation cleaning is best booked for the holidays.
Comparing quotes
- What hours they’ll be on site
- What’s included in the scope, part by part
- Whether they recommend a next date
- What records you’ll receive afterwards
The process
Your trading hours come first. We book the visit for a time the area is closed, whether that’s an evening, overnight or a weekend. Once we’re in, the area is sheeted and anything that has to be off is turned off and cooled, and the work takes one overnight shift for many single units, with bigger plant phased. Getting kit into a London building takes planning, so let us know where we can load and park in Sidcup.
- First the unit is surveyed, from photos or a visit, and the scope agreed.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- Filters, coils, fan section and casing are cleaned in turn.
- Drain trays are cleared and cleaned and the outlet checked.
- A TR19® certificate and photo report follow the clean.
Preparing for the visit
- Let us know about permits to work or site inductions
- Mention any locked doors, roof access or ceiling voids
- Let us know when the site is closed or quiet
Getting a quote
Photos are the quickest way to a quote: the system from a couple of angles, plus any access panels or hatches. Add the site type and your opening hours, and we can price many jobs without a visit.