Greater London · Air handling unit cleaning
Ruxley AHU cleaning
For cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Ruxley, one call is all it takes, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Units that have only ever had filter changes
- Drain trays holding standing water
- Intake sections clogged with outdoor debris
How we handle AHU cleaning in Ruxley
Coils are where a lot of the dirt ends up. Dirt on the fins holds back air and makes the unit work harder to do the same job. Coils are cleaned carefully, with methods chosen so the fins aren’t flattened. The work covers supply and extract fans, filter sections and dampers and louvres, and the jobs we see most are units that have only ever had filter changes and plant that needs cleaning after a refit.
London buildings often depend on air handling units in plant rooms or on the roof to supply fresh air. In a building in Ruxley, dust and debris build up in the units and ductwork over time.
Duct Doctor has been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Location
- Ruxley (DA14)
- Region
- Greater London
- Paperwork
- Photo report after each visit
- Quote
- A fixed quote up front
- When we work
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
What AHU cleaning cannot fix
It’s worth knowing the limits before booking:
- Leaking heating or cooling coils
- Faulty motors, drives or bearings
- Airflow problems caused by the system’s design
If you are not sure, just call 0345 646 2711, or send details by email and we’ll give you a straight answer before booking.
Where we work
- Dampers and louvres
- Drain trays
- Supply and extract fans
- Filter sections
- Heating and cooling coils
- Internal panels
Leave it or put it right?
If people in a building in Ruxley complain about stuffy or smelly air, the AHU is worth looking at. Cleaning it deals with the cause rather than the symptom. London sites work long hours, and the longer a job is left, the bigger it gets.
The cost depends on the size of the system, the condition it’s in and access to every part of it. You get a fixed price before any work starts, so there are no surprises.
Why Ruxley businesses choose us
- Trading since 2009
- A single point of contact for sites across the South East and London
- A fixed price before any work starts
- CHAS, SafeContractor and ISO 9001
See what affects the cost or our accreditations and certificates.
In-house cleaning or a specialist?
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.
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. Leave those to us.
FAQs for Ruxley
Can you work in Ruxley outside opening hours?
Yes, out-of-hours work is a big part of what we do. Your customers, staff or residents in Ruxley needn’t be disturbed. Just call us on 0345 646 2711 or send us an email with your opening times and we will plan around them.
Do you clean school ventilation in Ruxley in the holidays?
Yes, out-of-term visits are normal for schools. Food Standards Agency records list about 10 schools, colleges and universities with registered kitchens within about a mile and a half of Ruxley. Booking early in the term gives the best choice of holiday dates.
What types of premises do you cover?
Any commercial site with kitchens or ventilation, from a single café to a large school. We work with hotels, schools, care homes, offices, retail and leisure sites.
Can you quote from pictures?
In many cases, yes. Photos of the system and the access, plus your opening hours and last report, are often enough. Where we cannot see enough, we arrange a survey.
How long does it take to clean an air handling unit?
The work takes half a day to a full day per unit, with large plant planned over several shifts. Bigger units can be phased, so call 0345 646 2711, or send details by email to talk it through.
Is there a report after cleaning?
Yes. You receive a certificate and a report showing each section before and after, including anything we think needs attention.
Which parts of an air handling unit do you clean?
All the internal parts the air touches, from intake to discharge, including coils, fan and drain trays. The photo report shows each section before and after.
How much does AHU cleaning cost in Ruxley?
Every site is different, so each gets its own fixed quote. For a quote, call 0345 646 2711 or drop us a line with the site type, opening hours and a few pictures.
Also in Ruxley
How the visit works
At the end of the visit, someone from your team can look over the work with us. We point out anything that couldn’t be reached or needs a follow-up, and the same goes into the written report. All told, the work takes anything from half a day for one small unit to several shifts for a plant room full of them. Security desks and permits-to-work are routine in London, so let us know what your building in Ruxley needs from us.
- First the unit is surveyed, from pictures 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 are dealt with as agreed, and the coils, fan and casing cleaned.
- We clean out the drain tray and make sure it drains.
- You get a TR19® certificate and a photo report.
How to prepare
- Tell us the best time to work, such as after service or at a weekend
- Let us know about permits to work or site inductions
- Allow time for equipment near the work to be turned off and cool down
How to get a quote
Want a quote for AHU cleaning? Please ring 0345 646 2711 or drop us a line with a few details about the site. We will talk you through the work and give you a fixed quote before you commit to anything.
Read more
What the work involves, part by part
Fans and fan sections
Before the fan is touched, the unit is shut down and made safe with your site team.
Internal casing and panels
Access doors and panels are opened in turn and closed properly afterwards before the unit is handed back.
Fixed quotes for AHU cleaning in Ruxley
The diagnosis comes before the price. We look at:
- The number of sites or systems
- The condition we find in the survey
- A single visit or a regular plan
- Any permits to work or inductions
Combining work into one visit or one programme often makes better use of the time. Mention every system or site you need covered and we’ll price it together.
Asking for a quote
You don’t need the technical terms. It helps if you can send:
- How we’d reach plant on a roof or in a plant room
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- Any access panels or hatches you can see
- A few general shots of the system
Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in photos, get a survey first. Either way, the quote is fixed before any work is booked.
AHU cleaning in Ruxley: local notes
There are about 10 schools, colleges and universities and about 23 hospitals, care homes and childcare premises on the FSA’s food hygiene register within about 1.5 miles of central Ruxley. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. Queen Mary's Hospital is the nearest hospital, about 1.3 miles west of Ruxley. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. Getting kit to a London plant room normally means lifts, stairs and an agreed loading slot.
Healthcare buildings such as Queen Mary's Hospital, about 1.3 miles west, depend on their ventilation; if you manage a surgery, clinic or care home near Ruxley, yours matters too.
Ruxley is about 2 miles south-east of Sidcup, in Greater London. We provide AHU cleaning for businesses, landlords and public buildings in Ruxley and the rest of Greater London. Across Greater London, we cover 764 places, and Ruxley is one of them. You can also see our page for London, about 11 miles away.
We cover every part of the DA14 postcode area for AHU cleaning and the roads nearby. We also cover the places around Ruxley: Upper Ruxley (1 mile south-east), Foots Cray (1 mile west), Hockenden (1 mile south-east), North Cray (1 mile north) and Stonehill Green (1 mile east). Larger places within reach include London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), St Pancras (13 miles north-west), Shoreditch (12 miles north-west) and Walthamstow (14 miles north-west).
Local landmarks in Ruxley
Typical jobs here are in premises near Kemnal Technology College, Foots Cray Meadows and Walsingham School and the streets around them. The closest station to Ruxley is Albany Park station, roughly 1.5 miles north of the centre. A little further out are Metropolitan Police Museum (1.8 miles north-west) and Eynsford Castle (4.6 miles south-east). Not far away are The Warren and Summer Hill.
Common problems we fix in Ruxley
Most units live out of sight on roofs, in plant rooms or in ceiling voids, so they’re easy to forget about. It’s easy for a long time to go by without anyone opening the panels.
Clients typically contact us after spotting one of these:
- Coils clogged with dust and debris
- Blocked condensate drains and slimy trays
- Odours coming through the supply air
- Filters that are clogged or overdue
School buildings such as Hope Community School are usually done in the holidays, so classrooms aren’t disturbed.
What to look for in a quote
- Whether inaccessible sections are listed on the report
- Whether they’re fully insured
- If the quote is a fixed price or an estimate
- What records you’ll receive afterwards