Greater London · Air handling unit cleaning
Mottingham AHU cleaning
Looking for AHU cleaning in Mottingham? We survey first, give you a fixed quote and work around your opening hours, then sign off with a report and photos.
- Dirty filters cutting the airflow
- Dirty fans and fan housings
- Blocked condensate drains and slimy trays
What staff can safely do
Some jobs should never be done in-house: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. That is our job.
Logging matters as much as cleaning. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, next to our reports.
AHU cleaning for kitchens and businesses in Mottingham
Think of an AHU clean as a full check-up for the ventilation. We look inside each section, clean what we find and record it with photos, so you can see the unit’s condition for yourself. We’re often asked to deal with debris and leaves in the fresh air intake and dirty coils holding back the airflow, across supply and extract fans, heating and cooling coils and dampers and louvres.
Across London, offices, hotels, schools and healthcare buildings rely on mechanical ventilation, much of it supplied through air handling units on roofs or in basements. In a building in Mottingham, dust and debris build up in the units and ductwork over time.
The paperwork matters as much as the work. Each visit is written up with photos, covering the work done, any areas we couldn’t access and a recommended next date. File it in your maintenance log so it’s to hand when an insurer or inspector asks.
- Location
- Mottingham (SE9, SE12, BR1)
- Wider area
- Greater London
- Paperwork
- Photo report after every visit
- Quote
- A fixed quote up front
- When we work
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
How the visit works
Every visit runs to the same pattern: sheeting and protection first, 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. For a job in Mottingham, tell us about loading bays, permits, lifts and roof access when you book.
- We start with a survey of the unit and a fixed quote for the work.
- We arrange the shutdown with your staff and sheet the area.
- We clean or change the filters as agreed, then clean the coils, fan and internal panels.
- We clean out the drain tray and make sure it drains.
- We close up the unit and send the certificate and before and after pictures.
Before we arrive
- Find the previous report, if there is one
- Tell us about site rules, permits or sign-in
- Let us know how we reach the system, including roofs, risers and plant rooms
Getting a quote
Here’s what helps us quote: where the site is, what it is and its opening hours, pictures of the system and any previous report or certificate. Then ring 0345 646 2711, or send details by email.
Advice
Why deal with it now?
Leave an AHU uncleaned and the dirt does not stay put. It’s carried through the ductwork and out of the grilles, so cleaning the ducts without the unit only goes so far. Shared walls, risers and roofs mean a problem at one London site seldom stays put.
What you pay reflects the actual work. That’s why we survey first, from pictures or on site, and why the quote is fixed before any work starts.
What you get with us
- CHAS, SafeContractor and ISO 9001
- Work around your opening hours, with 24/7 emergency cover
- Photo reports with every job
- Ventilation hygiene specialists since 2009
Take a look at our cost guide or our accreditations.
Part by part
Internal casing and panels
Dust settles on every internal surface of the unit. Each section is cleaned from the intake through to the outlet.
Fans and fan sections
The fan section is cleaned with the unit switched off and isolated in agreement with the site.
Honest limits
It’s worth knowing the limits before booking:
- Building management system faults
- The supply and extract ducts, quoted separately
- Airflow problems caused by the system’s design
If in doubt, phone us on 0345 646 2711 or email us and we’ll say what we think.
What the work covers
- Supply and extract fans
- Dampers and louvres
- Filter sections
- Drain trays
- Internal panels
- Heating and cooling coils
Keeping the system healthy
Think of this as the after-treatment advice, in brief:
- Watch for drips or damp patches near the plant
- Plan the next inspection before the last report gets filed away
- Keep the area around the fresh air intake clear
- Flag stale or damp smells in the supply air
You receive a TR19® certificate and a photo report after the clean. They belong in the plant or maintenance log.
Keep the unit’s doors and panels in working order. Sections that are awkward to open are the ones that get skipped.
What affects the cost of AHU cleaning
Your quote is based on your site. We take into account:
- Travel, parking and unloading
- The number of sites or systems
- Working hours and out-of-hours timing
- A single visit or a regular plan
Putting the work off seldom saves money. Problems in a system tend to grow, and a neglected system can mean more work. If you are not sure what’s needed, ring 0345 646 2711 or email us for straight advice and a fixed quote.
Asking for a quote
You don’t need the technical terms. Just send:
- Your last certificate, test record or report
- Any symptoms, from odd noises to smells or leaks
- How we’d reach plant on a roof or in a plant room
- Wide pictures of the system and the area around it
Photos are enough for some jobs, while others need a look on site. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before work begins.
Also near Mottingham
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Mottingham: your questions answered
Is parking a problem for work in Mottingham?
Tell us where a van can stop near your site in Mottingham, and about any building rules on loading. If the building has a loading slot system, we will book into it.
Do you work overnight in Mottingham?
Yes, evening, overnight and weekend work is normal for us. That way a site in Mottingham doesn’t have to lose a day’s trading. Your opening times are the first thing we ask for.
What is TR19?
A BESA specification in two main parts: TR19® Grease for kitchen extracts and TR19® Air for supply and extract systems. It isn’t legislation, but it’s the standard people check against.
Can you come out in an emergency?
Yes, any time. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line, and we’ll advise on what to do next.
What if parts of the system can’t be reached?
We record them on the report, with pictures where possible, and we explain what access is needed, such as extra access panels in ductwork.
Do you give a certificate after the clean?
Yes. Every clean comes with a TR19® certificate and a photo report. They’re worth keeping with the plant records.
Which parts of an air handling unit do you clean?
Filters, coils, drain trays, the fan and the internal surfaces are all covered. What happens to the filters is agreed when we quote.
Is Mottingham in your area?
Yes. Our area takes in London and the counties of South East England, Mottingham included.
Ventilation in Mottingham buildings
There are about 21 schools, colleges and universities and about 35 care, childcare and hospital premises on the FSA’s food hygiene register in and around Mottingham, up to about a mile and a half out. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. The nearest hospital to Mottingham is Eltham Community Hospital, about 1.3 miles north-east. 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 usually means lifts, stairs and an agreed loading slot.
School buildings such as Marvels Lane Primary School are normally done in the holidays, so classrooms are not disturbed. If you run a surgery, dental practice or care home near Mottingham, clean ventilation matters as much to you as to a hospital like Eltham Community Hospital (about 1.3 miles north-east). If you manage shops or offices close to Grove Park station, a TR19® Air inspection shows whether the ductwork needs cleaning.
Mottingham is about 1 mile south-west of Eltham, in Greater London. Across the SE9 area, we can take on AHU cleaning. Mottingham is one of 764 towns, villages and districts in Greater London we cover for commercial clients. There’s also a page for London, roughly 7 miles from Mottingham.
Postcode districts we cover here for AHU cleaning: SE9, SE12 and BR1. Local streets include Horley Road, Dorset Road and Albert Road, and we cover them all for AHU cleaning. Close by, we work in Chinbrook (1 mile south-west), Grove Park (1 mile west), Coldharbour (1 mile east), Middle Park (1 mile north) and Horn Park (1 mile north-west). Further out, we also cover London (7 miles north-west), City of Westminster (10 miles north-west), Marylebone (10 miles north-west), Kensington (11 miles north-west), St Pancras (9 miles north-west) and Shoreditch (8 miles north-west).
Around Mottingham
In Mottingham, that means kitchens and buildings near Colfe's School, Chinbrook Meadows and Haberdashers' Aske's Knights Academy. Mottingham’s nearest station is Grove Park station, roughly 0.7 miles west of the centre. A little further out are Greenwich Castle (3.5 miles north-west) and Prefab Museum (1.7 miles west). Green spaces nearby include Summer Hill and The Tarn.