Greater London · Air handling unit cleaning
Welling AHU cleaning
Looking for AHU cleaning in Welling? We diagnose first, fix the price and book the work around your hours, finishing with a written report and photos.
- Debris and leaves in the fresh air intake
- Fan sections that haven’t been cleaned in years
- Units that have only ever had filter changes
AHU cleaning in Welling
Our AHU cleaning covers sites in Welling and the rest of Greater London, in buildings such as offices, schools, healthcare sites and shops. The work is timed around when the system can be switched off, including evenings, nights and weekends. Typical jobs include leaves and litter drawn into the unit and units needing a clean before a new tenant or handover, on dampers and louvres, heating and cooling coils and internal panels.
Many London buildings have had their ventilation extended and altered through several fit-outs, with old runs left behind that are hard to reach. In Welling, as elsewhere, cleaning starts with an inspection of what’s there.
We’re CHAS and SafeContractor accredited, we hold ISO 9001 and we are fully insured. On top of that, we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we’ve been trading since 2009.
- Location
- Welling (DA16, DA15, DA6)
- Wider area
- Greater London
- Reporting
- Written report with pictures
- Quotes
- Fixed quote, usually within a working day
- When we work
- When your site is closed, plus a 24/7 line
- Telephone
- 0345 646 2711
- Reviewed
- 30 October 2026
What AHU cleaning looks like in Welling
Food Standards Agency records list about 34 schools, colleges and universities and about 73 care, childcare and hospital premises registered as food businesses in Welling and the streets around it, up to about 1.5 miles out. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. London plant rooms are often on roofs or in basements reached through occupied floors. Bexley Hospital is the nearest hospital, about 0.9 miles east of Welling. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
Workplaces around Welling station with an air handling unit need the filters, coils and drain tray looked at, as well as the ducts. Healthcare ventilation, from large hospitals like Bexley Hospital (about 0.9 miles east) to small clinics, depends on clean filters, coils and ducts.
Welling is about 9 miles east of London, in Greater London. Wherever you are in the DA16 postcode area, we can carry out AHU cleaning at your premises. We cover 764 places across Greater London, from busy centres to quieter spots. Our London page covers sites nearby, about 9 miles away.
Postcode districts we cover here for AHU cleaning: DA16, DA15 and DA6. If you need AHU cleaning at premises on Days Lane, Hook Lane and Lyme Road or a nearby road, our technicians can take on the work. Welling sits on or near the A207, which makes travel easy for AHU cleaning. Neighbouring places we cover for AHU cleaning include Crook Log (1 mile east), Blendon (1 mile south-east), Upton (1 mile east), Bexleyheath (1 mile east) and West Heath (1 mile north-east). Further out, we also cover London (9 miles west), City of Westminster (12 miles west), Marylebone (12 miles west), Kensington (14 miles west), St Pancras (11 miles north-west) and Shoreditch (9 miles north-west).
Near you in Welling
Locally, jobs take us to businesses close to Nags Head pub, Danson Park and Bexley Grammar School and the streets around them. The nearest railway station is Welling station, about 0.5 miles north-west of the centre. Other landmarks nearby include Greenwich Castle (5 miles west) and Broadway Shopping Centre (1.6 miles east). Open spaces near Welling include The Tarn and Summer Hill.
Welling questions
Can ventilation in schools around Welling be cleaned out of term?
Yes, out-of-term visits are normal for schools. The FSA’s register shows about 34 schools and colleges with food registrations within roughly a mile and a half of Welling. Send us your term dates when you ring 0345 646 2711 or email us, and we’ll fit the work in.
Can the work in Welling be done at night or at weekends?
Yes. We work evenings, overnight and at weekends. The site is handed back ready to open. Just call 0345 646 2711 or use the quote form with your opening times and we will plan around them.
Can you price the work without visiting?
Yes, where the photos show enough. Otherwise, we book a survey at a time that suits the site, then a fixed quote.
Can you look after several sites?
Yes. Our area covers London and the South East, so sites at different addresses can be planned together as one programme. Each site gets its own report and photos.
Do you do ventilation duct cleaning too?
Yes. We clean supply and extract ductwork to TR19® Air as well. It’s often worth doing both at once, and we can survey both on the same visit.
What accreditations do you have?
We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
Do you offer emergency callouts?
Yes, 24/7. Our office is open from 8am to 6pm on weekdays, and the emergency line covers the rest.
What’s TR19?
TR19® is BESA’s specification for ventilation hygiene. Since 2019, TR19® Grease has been a standalone specification for grease in kitchen extract systems, and TR19® Air covers general supply and extract systems.
What a clean won’t put right
To be straight with you, there are a few things this work will not fix:
- Ventilation that was badly designed in the first place
- Leaking heating or cooling coils
- Controls and BMS settings that run the unit
Not sure which it is? You can call us on 0345 646 2711, or send details by email and we’ll tell you honestly.
What the work covers
- Internal panels
- Drain trays
- Dampers and louvres
- Supply and extract fans
- Filter sections
- Heating and cooling coils
Why it’s worth doing now in Welling
Tenants, auditors and owners may want proof that the air handling plant is kept clean. Our certificate and photo report give you clear evidence, for audits, tenants or your own peace of mind. Planning ahead in Welling lets you pick a quiet night rather than lose a busy one.
We do not list prices on the website, because the cost depends on the site in front of us. Call for a fixed quote, and we will talk you through it.
Why Welling businesses choose us
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Survey first, then a fixed quote
- A fixed price before any work starts
- Ventilation hygiene specialists since 2009
Take a look at what affects the cost and our accreditations and certificates.
What the work involves, part by part
Rooftop and plant room units
Many AHUs sit on roofs or in plant rooms with limited access. We plan safe access as part of the survey so the quote reflects it.
Fans and fan sections
Dust on a fan impeller adds weight and wear. Cleaning keeps it running as intended.
What happens on the day
Every visit runs to the same pattern: sheeting and protection first, isolate whatever needs isolating, do the work, clear away and leave you the report. On site, the work takes from a few hours for a compact unit to a day or more for a large one. Managed blocks in London often need contractors booked in ahead, and we are happy to deal with the agent directly for a site in Welling.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- Coils and trays are cleaned and the condensate drain cleared.
- The unit is closed up and handed back, with a report to follow.
Getting ready for the visit
- Tell us where we can park and unload
- Mention any locked doors, roof access or ceiling voids
- Tell us about site rules, permits or sign-in
How to get a quote
Some systems can be priced from pictures; others need a survey. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, you get a fixed price before work begins.
Related advice
Towns and villages near Welling
Other services in Welling
Do you need AHU cleaning in Welling?
An overdue filter loads up with dirt, cutting airflow and sometimes letting dirty air bypass them altogether. Then the rest of the unit takes the load.
Any of these means the system needs a check-up:
- Fan sections that haven’t been cleaned in years
- Rooms that smell stuffy when the system runs
- Plant that needs cleaning after a refit
- Dirty coils holding back the airflow
Classrooms and halls at schools such as Danson Primary School are easiest to work in when pupils are away.
What your quote should include
- Whether a written report and photos are included
- What’s included in the scope, part by part
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- Whether they’re fully insured
Multi-site and managed buildings
Where a tenant occupies the premises but the landlord owns the building, the lease normally sets out who maintains what. We’re happy to deal with either side, and the report can go to both.
Running several sites is easier with one contractor. We work across London and the South East, so a run of sites can go into one programme and kept to a regular schedule.
What your team can do, and what needs us
Staff cleaning and specialist work are not the same thing. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but they don’t reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.
Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they can’t safely do is clean inside the ductwork, the fan or the risers, and that’s where we come in.