Greater London · Air handling unit cleaning
Balham AHU cleaning
One call covers AHU cleaning in Balham, from survey to sign-off. Fully insured, with CHAS, SafeContractor and ISO 9001.
- Blocked condensate drains and slimy trays
- Dirty filters cutting the airflow
- Intake sections clogged with outdoor debris
What we do, step by step
There’s very little for your team to do on the day. A contact on site lets us in at the agreed time and points us to the system, and we take it from there. Before we leave, the area is tidied and the paperwork follows. In Balham, as across London, we typically work overnight or at weekends and hand the site back ready to open.
- First we agree when the unit can be switched off, including evenings or weekends.
- Before cleaning, each section is photographed.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- The fan and drain tray are cleaned and the drain checked.
- We take after photos and issue the certificate and report.
Before we arrive
- Mention any sign-in, permit or induction we need
- Name a contact who can let us in at the agreed time
- Tell us where we can park and unload
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 photos, get a survey first. Either way, the quote is fixed before any work is booked.
Related advice
About our AHU cleaning in Balham
Drain trays under cooling coils are meant to empty. If the outlet blocks, standing water and slime build up, in the airstream that feeds the building. Clearing and cleaning the tray is central to every AHU clean. If you are dealing with intake sections clogged with outdoor debris and air handling units never cleaned inside, we can put it right.
Many London buildings have had their ventilation extended and altered through several fit-outs, leaving sections that are hard to reach and seldom cleaned. An inspection first shows where cleaning is needed in a building in Balham.
Insurers, fire officers and environmental health officers all look at records. That is why every job is written up in a report with pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Where
- Balham (SW12, SW17, SW4)
- Wider area
- Greater London
- Paperwork
- Photo report after every visit
- Quote
- Fixed quote, usually within a working day
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
Nearby places to Balham
More services for Balham
Different parts, different methods
Heating and cooling coils
Dirt on a coil slows the air and makes it harder for the coil to heat or cool. Cleaning restores the open path through the fins.
Internal casing and panels
Access doors and panels are opened in turn and closed properly afterwards before the unit is handed back.
When to call us in Balham
Planned maintenance often covers belts, motors and filters but not cleaning. That means a unit can tick every service box and still be carrying years of dirt.
Clients normally contact us when they notice one of these:
- Dust-coated heating and cooling coils
- Fan sections that haven’t been cleaned in years
- Filters that are clogged or overdue
- Rooms that smell stuffy when the system runs
School buildings such as Ravenstone Primary School are usually done in the holidays, so classrooms aren’t disturbed.
Before booking anyone
- What records you will receive afterwards
- Whether VAT is included
- Whether a survey comes first
- What hours they’ll be on site
Why it’s worth doing now in Balham
A clogged coil or dirty fan makes the unit work harder for the same airflow. That means more wear on the motor and rooms that feel less fresh, and a planned clean is far less disruptive than a breakdown. London sites work long hours, and the longer a job is left, the bigger it gets.
Kitchens, offices, schools and hospitals are all priced the same way: how much there is, how we reach it, what state it’s in and when we can work. Call for a fixed quote and we will go through it with you.
Why us?
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Ventilation hygiene specialists since 2009
- A single point of contact for sites across the South East and London
- Fully insured
Read our cost guide or how to check a contractor.
Staff cleaning versus specialist work
In-house cleaning and specialist cleaning do different jobs. A daily filter wipe and a weekly filter wash keep grease down at the front of the system, but grease that has passed the filters is out of reach. Reaching it takes a specialist with the right equipment.
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’ll take a look and send you a fixed quote.
Multi-site and managed buildings
If you look after several sites, we can plan visits across the whole estate and price them together. Each site gets its own report and photos, so each one has its own record.
Multi-site operators often want one contractor and one number. We work across London and the South East, so a run of sites can go into one programme and kept on a regular cycle.
Ventilation in Balham buildings
The FSA’s food hygiene register lists about 40 schools, colleges and universities, about 88 hospitals, care homes and childcare premises and about 9 hotels and B&Bs with registered kitchens or food service in and around Balham, 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. For Balham, the closest hospital is St James' Hospital, roughly 0.5 miles west. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale. Many London buildings have had their ductwork altered through several fit-outs, so an inspection comes first.
If you manage offices or shops near Balham station, their ventilation can be inspected and cleaned out of hours. St James' Hospital, about 0.5 miles west, is the nearest hospital to Balham, and healthcare sites of every size need their supply air kept clean.
Balham is about 2 miles south-west of Stockwell, in Greater London. Wherever you are in the SW12 postcode area, we cover AHU cleaning for commercial sites. Across Greater London, we cover 764 places, and Balham is one of them.
Work in SW12, SW17 and SW4 is surveyed, quoted and booked the same way as anywhere else. AHU cleaning is available to premises on Lynn Road, Weir Road and Byrne Road and the roads around them. Nearby, we also carry out AHU cleaning in Grange Mills (1 mile north-east), Hyde farm estate (1 mile east), Clapham Park (1 mile north-east), Streatham Park (1 mile south-east) and Tooting Bec (1 mile south-west). We also work in nearby towns such as London (5 miles north-east), City of Westminster (5 miles north), Marylebone (5 miles north), Kensington (4 miles north-west), St Pancras (6 miles north) and Shoreditch (7 miles north-east).
Around Balham
We work in commercial kitchens and buildings around Oak Lodge School, Wandsworth Common and The Bedford pub, among other places. Balham has its own railway station: Balham station. Nearby you will also find St James' Hospital (0.5 miles west) and London Sewing Machine Museum (0.6 miles south-west). The countryside around Balham includes Knight's Hill and Battersea Park Lake.
What affects the cost of AHU cleaning
The price is fixed before any work begins. It takes into account:
- The size of the system
- Access, including roofs, risers and ceiling voids
- The times the site is available
- 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 unsure, give us a ring on 0345 646 2711 or email us and we will give you an honest view and a fixed quote.
What we need to know
When you contact us, it’s useful to have:
- Your opening hours and when the area is out of use
- Any previous report or certificate
- The roof, plant room or outside wall the system runs to
- Any access panels or hatches you can see
We don’t publish a price list, because every site is different. Instead, we look at your site first, from pictures or a survey, and then send you a fixed quote. To get going, give us a ring on 0345 646 2711, or email photos.
FAQs for Balham
Can you work in Balham outside opening hours?
Yes, we can come after you close and finish before you open. The work in Balham can fit around your hours. Tell us your opening hours when you ask for a quote.
Is parking a problem for work in Balham?
We plan it in advance, so let us know about loading bays, permits and access rules at the building. If the building has a loading slot system, we will book into it.
What accreditations do you have?
BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001. We’ve been trading since 2009 and we’re fully insured.
Are you insured?
Yes, fully. CHAS and SafeContractor accreditation sit alongside it, for sites that check contractor safety.
What’s TR19?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It covers how systems are inspected, cleaned and checked and expects a risk-based approach.
Do you offer emergency callouts?
Yes. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line and we’ll talk you through the next steps.
Can you look after several sites?
Yes. Send the list of sites and the work at each and you will get one fixed quote.
What happens to the waste?
We contain it and take it with us. We collect grease, debris and waste water as we go, so it does not spread.