Greater London · Air handling unit cleaning
AHU Cleaning in Herne Hill
Professional AHU cleaning in and around Herne Hill, timed so the site keeps working and signed off in writing with pictures.
- Condensate trays that will not empty
- Air handling units with blocked filters
- Plant that needs cleaning after a refit
Different parts, different methods
Heating and cooling coils
Because cooling coils run wet, the dirt on them tends to cling. We clean the coil and the tray beneath it together.
Fans and fan sections
Every bit of air passes the fan, so a dirty fan sends dirt downstream. The impeller, its housing and the fan chamber are cleaned.
About our AHU cleaning in Herne Hill
Our AHU cleaning covers sites in Herne Hill 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. The work covers filter sections, drain trays and internal panels, and people most often call us about drain trays holding standing water and units needing a clean before a new tenant or handover.
In London, plant rooms are often in basements or on roofs reached through occupied floors, so work in Herne Hill is often done in the evening or at weekends. Parking and loading are agreed with the building in advance.
The paperwork matters as much as the work. Each visit is written up with pictures, 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
- Herne Hill (SE22, SW2, SE24)
- Region
- Greater London
- Paperwork
- Written report with photos
- Quote
- Fixed quote, typically within a working day
- Hours
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
Between visits
After the visit, a few habits help the work last:
- Do not ignore odours coming through the grilles
- Report water on the plant room floor
- File each AHU report in the maintenance log
- Stick to the filter change plan
Stick to the filter change schedule, because good filters protect everything downstream. Record each change in the maintenance log.
Make the drain tray part of every maintenance visit. A drain that is cleared early never gets to the slime stage.
How we price AHU cleaning
A fixed price needs a few facts first. We look at:
- The times the site is available
- Any permits to work or inductions
- Whether we need access equipment or extra panels
- The size of the system
What you pay depends on how big the system is, the condition it’s in and how easy it is to reach. You get a fixed price before any work starts, so there are no surprises.
Asking for a quote
To help us quote quickly, please include:
- The times we could work without disrupting the site
- Your last certificate, test record or report
- Any symptoms, from odd noises to smells or leaks
- Wide pictures of the system and the area around it
Every quote begins with a look at the system, either from pictures and details you send or from a site visit. After that, you get a fixed price for the work so you know the cost before work begins.
When it’s something else
It’s worth knowing the limits before booking:
- Controls and BMS settings that run the unit
- Breakdowns that need a mechanical engineer
- A system that’s undersized for the building
Not sure which it is? You can ring 0345 646 2711 or drop us a line and we will tell you honestly.
What we work on in Herne Hill
- Drain trays
- Dampers and louvres
- Internal panels
- Supply and extract fans
- Heating and cooling coils
- Filter sections
Multi-site and managed buildings
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, which may be the employer, owner, landlord, FM or managing agent. With shared responsibility, good records help everyone.
Multi-site operators often want one contractor and one number. We cover South East England and London, so a run of sites can go into one programme and kept on a regular cycle.
Your questions about AHU cleaning in Herne Hill
What do you need to know about parking in Herne Hill?
London parking can be tight, so details of loading bays and permits help. Working overnight, as we often do in London, usually makes it simpler.
Do you do school ventilation cleaning in Herne Hill in the summer holidays?
Yes, holiday work suits schools best. With about 70 schools and colleges on the FSA’s register within roughly a mile and a half of Herne Hill, it pays to plan holiday dates ahead. Just call us on 0345 646 2711 or use the quote form with your term dates and we’ll plan around them.
How long does an AHU clean take?
As a guide, it takes one overnight shift for many single units, with bigger plant phased. The shutdown is planned to fit, out of hours if needed.
What if parts of the system cannot be reached?
Anything we cannot reach goes on the report, with photos where possible, and we explain what access is needed, for example new access panels.
Can you clean without disrupting the building?
Yes, if daytime working is not practical. Tell us when the unit can go off and we’ll work to that.
Do you need to switch the unit off?
Yes. The unit has to be shut down and isolated before it’s opened. The shutdown is planned with whoever runs the building.
What is TR19?
It’s BESA’s specification and the benchmark insurers, fire officers and EHOs look to. It sets out inspection, cleaning and record keeping, and it takes a risk-based approach.
When should our AHU next be cleaned?
Under TR19® Air, cleaning is led by inspection and risk rather than a set calendar. We recommend a next date in each report.
What we do, step by step
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. Getting kit into a London building takes planning, so let us know where we can load and park in Herne Hill.
- We survey the unit from photos or on site and agree what’s included.
- We arrange the shutdown with your staff and sheet the area.
- Filters, coils, fan section and casing are cleaned in turn.
- 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
- Name a contact who can let us in at the agreed time
- Let us know about permits to work or site inductions
- Mention any locked doors, roof access or ceiling voids
Get a fixed quote
We don’t publish a price list, because every site is different. Instead, we look at your site first, from photos or a survey, then send a fixed quote. To get going, give us a ring on 0345 646 2711 or email us.
Related advice
Towns and villages near Herne Hill
Also in Herne Hill
In-house cleaning or a specialist?
Staff cleaning and specialist work aren’t the same thing. Wiping filters daily and washing them weekly keeps the visible parts in order, but they don’t reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings call for the right kit, training and safe access. That’s our job.
Ventilation in Herne Hill buildings
There are about 70 schools, colleges and universities, about 58 caring premises (care homes, nurseries and hospitals) and about 5 hotels, B&Bs and guest houses on the FSA’s food hygiene register within roughly a mile and a half of the centre of Herne Hill. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Herne Hill’s nearest hospital, Dulwich Community Hospital, is about 0.6 miles north-east. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. Ventilation cleaning in London buildings is normally planned for evenings or weekends.
Classrooms and halls at schools such as Judith Kerr Primary School are easiest to work in when pupils are away. Hospitals such as Dulwich Community Hospital (about 0.6 miles north-east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Herne Hill are no different. If you manage offices or shops near North Dulwich station, their ventilation can be inspected and cleaned out of hours.
Herne Hill is about 3 miles south of London, in Greater London. If you need AHU cleaning in Herne Hill, it’s easy to get a fixed quote: please call 0345 646 2711 or email us. We work across South East England and London, Herne Hill included. Our Greater London coverage runs to 764 places, Herne Hill among them.
We cover every part of the SE22, SW2 and SE24 postcode area for AHU cleaning and the roads nearby. That includes premises on Jelf Road, Dewey Lane and Talma Road and the roads around them. With the A204 and A2214 close by, Herne Hill is simple for us to get to at any hour. Close by, we work in Dulwich Village (1 mile south-east), East Dulwich (1 mile north-east), Dulwich (1 mile south-east), Denmark Hill (1 mile north) and Camberwell (1 mile north). Larger places within reach include London (3 miles north), City of Westminster (5 miles north-west), Marylebone (5 miles north-west), Kensington (6 miles north-west), St Pancras (5 miles north) and Shoreditch (5 miles north).
What’s near Herne Hill
Around Herne Hill, our work takes us to kitchens and buildings near The Charter School, Half Moon pub and Belair Park. There’s a railway station in Herne Hill itself: North Dulwich station. Other landmarks nearby include Surrey Quays Shopping Centre (3.5 miles north-east) and House of Dreams Museum (0.7 miles north-east). For a walk, there’s Battersea Park Lake and Knight's Hill.