Greater London · Air handling unit cleaning
Air handling unit cleaning in Coldharbour, Greater London
We cover Coldharbour for cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces. Fixed quotes, work around your opening hours and photo reports on every job.
- Rooms that smell stuffy when the system runs
- Drain trays holding standing water
- Leaves and litter drawn into the unit
AHU cleaning in Coldharbour, done properly
All the building’s air passes through the fan, so dirt on the impeller and housing gets spread around. We clean the fan section along with the rest of the unit, once the unit has been shut down and isolated. The work covers filter sections, dampers and louvres and drain trays, and common reasons people get in touch are air handling units due a clean after building work and rooms that smell stuffy when the system runs.
London offices and flats often have ductwork added through successive refits, with old runs left behind that are hard to reach. In Coldharbour, as elsewhere, cleaning starts with an inspection of what’s there.
Good records are part of the job. You get a written report with pictures after each 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 ready for an insurer, fire officer or EHO.
- Place
- Coldharbour (SE9, BR7)
- Wider area
- Greater London
- Records
- Report and pictures after the visit
- Quotes
- A fixed price before we start
- When we work
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Checked
- 30 October 2026
Ventilation in Coldharbour buildings
Going by the FSA’s register, there are about 21 schools, colleges and universities and about 32 hospitals, care homes and childcare premises serving food across Coldharbour and its immediate surroundings (about a mile and a half). Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. In London, ventilation plant is often on the roof or below ground, so the work is usually done out of hours. About 1.3 miles north of Coldharbour is Eltham Community Hospital, the nearest hospital. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.
If you manage offices or shops near Mottingham station, their ventilation can be inspected and cleaned out of hours. Eltham Community Hospital, about 1.3 miles north, is the nearest hospital to Coldharbour, and healthcare sites of every size need their supply air kept clean.
Coldharbour is about 4 miles north-west of Orpington, in Greater London. We provide AHU cleaning for businesses, landlords and public buildings in Coldharbour and the rest of Greater London. Our area takes in 764 places across Greater London, from busy centres to quieter spots. Our London page covers sites nearby, about 8 miles away.
Our technicians cover all of SE9 and BR7 for AHU cleaning and the roads nearby. Whether your site is on Green Lane, Horley Road and Dorset Road or a nearby road, we can help. We also cover Mottingham (1 mile west), Chinbrook (1 mile west), New Eltham (1 mile north-east), Eltham (1 mile north) and Middle Park (1 mile north-west). Larger places within reach include London (8 miles north-west), City of Westminster (11 miles north-west), Marylebone (10 miles north-west), Kensington (12 miles north-west), St Pancras (10 miles north-west) and Shoreditch (9 miles north-west).
Local landmarks in Coldharbour
Typical jobs here are in premises near Elmstead Wood and St Thomas More Catholic Comprehensive School and the streets around them. The closest station to Coldharbour is Mottingham station, about 0.6 miles north of the centre. Well-known places in the area include The Glades (2.4 miles south-west) and Metropolitan Police Museum (2.2 miles east). The countryside around Coldharbour includes The Tarn and Summer Hill.
Staff cleaning versus specialist work
If your staff spot something between visits, such as dripping grease, a noisy fan, a smell or a filter that won’t come clean, they should report it rather than try to fix it. We will take a look and give you a fixed quote.
Some jobs should never be done in-house: 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.
Towns and villages near Coldharbour
More services for Coldharbour
How it works
Your staff do not need to do much on the day. Someone lets us in at the agreed time and shows us where everything is, and we take it from there. Before we leave, the area is tidied and the paperwork follows. Security desks and permits-to-work are routine in London, so let us know what your building in Coldharbour needs from us.
- The survey covers the unit, its access and how it can be shut down.
- The area is protected and the unit made safe.
- 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
- Agree a time when the area can be out of use
- Allow time for equipment near the work to be turned off and cool down
- Clear the space around the work
Ask for a quote
Getting a quote does not take long. Send a few details and photos, and we usually reply with a fixed quote within one working day. Where a survey is needed, we arrange a time that suits the site.
Advice
When something else is needed
We’d rather tell you now than book work that will not help, so here are the limits:
- Ventilation that was badly designed in the first place
- Damaged coils beyond cleaning
- Problems with the unit’s controls or sensors
If in doubt, phone us on 0345 646 2711 or use the quote form and we’ll say what we think.
What the work covers
- Heating and cooling coils
- Internal panels
- Filter sections
- Dampers and louvres
- Supply and extract fans
- Drain trays
Keeping the system healthy
A little care between visits keeps the system in better shape. Our advice:
- Plan the next inspection before the last report gets filed away
- Flag stale or damp smells in the supply air
- Do not store bins or materials near the intake
- Look at the condensate drain whenever the unit is serviced
The report shows each section of the unit before and after, along with anything we couldn’t reach. Any defects we noticed, like a leaking tray or damaged lining, are listed.
Check drain trays and condensate drains during routine maintenance. A drain that is cleared early never gets to the slime stage.
What affects the quote in Coldharbour
The price is fixed before any work begins. It’s based on:
- How big the system is
- What state the system is in
- Whether it’s a one-off visit or part of a schedule
- The number of sites or systems
Every site is different, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all play a part.
Asking for a quote
A few details help us quote accurately. With your enquiry, please include:
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- Where the site is and what kind of site it is
- When the site is open and when it’s quiet
- Any access panels or hatches you can see
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 we can price many jobs without a visit.
Different parts, different methods
Filters
Filter condition tells you a lot about the rest of the unit. We photograph them for the report.
Fans and fan sections
Before the fan is touched, the unit is shut down and made safe in agreement with the site.
What we’re called out for in Coldharbour
An overdue filter loads up with dirt, which cuts the airflow and can let air slip round the filter. After that, the coils and fan collect what the filter should have caught.
Most sites get in touch after spotting something like this:
- Odours coming through the supply air
- Air handling units due a clean after building work
- Filters that are clogged or overdue
- Dirty fans and fan housings
For schools like Mottingham Primary School, the holidays are the usual time to inspect and clean ventilation.
Comparing quotes
- Whether the quote is based on a survey or pictures
- Which accreditations they hold, and whether you can check them
- How areas they cannot reach will be recorded
- What paperwork you get at the end
Coldharbour questions
Can you come to Coldharbour after we close?
Yes, evening, overnight and weekend work is normal for us. Your customers, staff or residents in Coldharbour needn’t be disturbed. Just give us a ring on 0345 646 2711 or send us an email with your opening times and we will plan around them.
What do you need to know about parking in Coldharbour?
Parking and loading in London need planning, so tell us about bays, permits and building rules when you book. Where restrictions apply in the day, an evening or overnight visit usually gets round them.
How long does it take to clean an air handling unit?
The work takes anything from half a day for one small unit to several shifts for a plant room full of them. Large plant can be split over several shifts, so ring 0345 646 2711 or use the quote form to talk it through.
Do you survey before quoting?
Yes. Photos often do the job, while bigger or harder-to-see systems are surveyed on site.
When should our AHU next be cleaned?
There’s no single answer; it comes down to the building and the unit. Inspection tells you when cleaning is needed, and we’ll suggest an interval after the first clean.
What happens if you can’t reach some of it?
They’re listed in the report, never skipped quietly. The report says which parts couldn’t be reached and why, and we can quote to improve the access.
Are you insured?
Yes. Full insurance covers our work and have been trading since 2009.
Can you look after several sites?
Yes. Tell us the addresses and what each needs and we will quote them together.