Greater London · Air handling unit cleaning
Air handling unit cleaning in Netherne on-the-Hill, Greater London
AHU cleaning for Netherne on-the-Hill and the surrounding area: diagnosis first, then a fixed quote, the work and a report with pictures. Ask us for a fixed quote.
- Stale or musty smells from the ventilation
- Dirty coils holding back the airflow
- Condensate trays that will not empty
How we handle AHU cleaning in Netherne on-the-Hill
Units vary a lot in size, age and layout, whether it’s a compact unit in a ceiling void or a big unit on the roof. Every job starts with a survey, from pictures or on site, followed by a fixed quote before any cleaning starts. The work covers heating and cooling coils, dampers and louvres and drain trays, and people most often call us about air handling units due a clean after building work and coils clogged with dust and debris.
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 Netherne on-the-Hill.
Accreditations are easy to claim and worth checking. Ours are BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Place
- Netherne on-the-Hill (CR5)
- Wider area
- Greater London
- Paperwork
- Written report with photos
- Quote
- A fixed quote up front
- When we work
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Updated
- 30 October 2026
What AHU cleaning can’t fix
AHU cleaning can’t fix everything, and we’ll tell you before work begins. It won’t put right:
- Airflow problems caused by the system’s design
- Faulty motors, drives or bearings
- Leaking heating or cooling coils
Not sure which it is? You can call 0345 646 2711, or email photos and we will tell you honestly.
What the work covers
- Supply and extract fans
- Drain trays
- Dampers and louvres
- Internal panels
- Heating and cooling coils
- Filter sections
What happens if it’s left?
Facilities teams are often asked for evidence that the ventilation is looked after. A TR19® certificate and photo report give you that, for audits, tenants or your own peace of mind. A building in Netherne on-the-Hill may have flats or offices above and alongside, and a fault in the system can affect them too.
Kitchens, offices, schools and hospitals are all priced the same way: the size of the job, access, condition and working hours. Ask for a fixed quote and we’ll go through it with you.
Why book with us
- Each visit written up, with pictures
- Accredited under CHAS and SafeContractor, with ISO 9001
- Every job surveyed first
- Trading since 2009
Take a look at how cleaning jobs are priced or our accreditations and certificates.
Other services in Netherne on-the-Hill
AHU cleaning around Netherne on-the-Hill
There are about 7 schools, colleges and universities and about 7 care, childcare and hospital premises on the FSA’s food hygiene register within 1.5 miles or so of the middle of Netherne on-the-Hill. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. St Lawrence's Hospital is the nearest hospital, about 1.9 miles east of Netherne on-the-Hill. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. London plant rooms are often on roofs or in basements reached through occupied floors.
If you run a surgery, dental practice or care home near Netherne on-the-Hill, clean ventilation matters as much to you as to a hospital like St Lawrence's Hospital (about 1.9 miles east). Classrooms and halls at schools such as Coulsdon Sixth Form College are easiest to work in when pupils are away.
Netherne on-the-Hill is about 2 miles south of Coulsdon, in Greater London. Sites in Netherne on-the-Hill get the same service as everywhere we cover: diagnosis first, a fixed price, out-of-hours working where needed and a written report with photos. Our Greater London coverage runs to 764 places, Netherne on-the-Hill among them. We also work in London, about 14 miles from Netherne on-the-Hill.
We cover every part of CR5 for AHU cleaning and the streets around it. If you need AHU cleaning at premises on The Village Square, Rookery Mead and Netherne Lane or a nearby road, our technicians can take on the work. Neighbouring places we cover for AHU cleaning include Hooley (1 mile west), Merstham (2 miles south), Chaldon (2 miles south-east), South Merstham (2 miles south) and Gatton (2 miles south-west). Larger places within reach include London (14 miles north), City of Westminster (15 miles north), Kensington (15 miles north), Brompton (14 miles north), Stockwell (12 miles north) and Orpington (12 miles north-east).
Landmarks near Netherne on-the-Hill
In Netherne on-the-Hill, that means kitchens and buildings near Shabden Park. The nearest railway station is Coulsdon South station, about 1.6 miles north. Nearby you will also find The Belfry (3.8 miles south) and East Surrey Museum (2.9 miles east). For a walk, there’s South London Downs National Nature Reserve and Colley Hill.
Different parts, different methods
Drain trays
Drain trays can rust and leak over time. We record their condition with photos so repairs can be planned.
Internal casing and panels
Loose or damaged linings inside a unit can break up into the airstream. Anything like that is recorded with pictures.
Netherne on-the-Hill: your questions answered
Do you work at weekends in Netherne on-the-Hill?
Yes. We work evenings, overnight and at weekends. The work in Netherne on-the-Hill can fit around your hours. Your opening times are the first thing we ask for.
How do you handle parking and loading in Netherne on-the-Hill?
Tell us where a van can stop near your site in Netherne on-the-Hill, and about any building rules on loading. Much of our London work is done overnight, which helps.
Which kinds of sites do you work on?
Restaurants and pubs, hotels, schools and colleges, hospitals and care homes, offices and retail, plus food production and leisure sites.
What information do you need?
Where the site is, what it is and when it’s open, along with a few photos and any previous report.
Can you price the work without visiting?
Yes, where the photos show enough. If not, a site survey comes first, then a fixed quote.
Can you look after several sites?
Yes. Our area covers London and the South East, so we can schedule a run of sites as one programme. Every site has its own report.
What accreditations do you have?
Our accreditations are CHAS, SafeContractor and ISO 9001, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
Do you survey before quoting?
Yes, always. Diagnosis comes before treatment: the survey shows what needs doing and what access we need and the fixed quote is built on it.
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. Where responsibility is shared, records matter even more.
For anyone managing more than one site, we can schedule visits across all of them on one quote. Each site gets its own report and photos, so records stay tidy.
Keeping the system healthy
Good habits slow the build-up between visits. A few tips:
- Keep the certificate and photo report with the plant records
- Check the drain tray is emptying during routine visits
- Do not store bins or materials near the intake
- Watch for drips or damp patches near the plant
When we have closed the unit up, it can be restarted with your site team. Check the drain tray is emptying over the first few days to confirm water is draining away.
Regular filter changes are the best protection an AHU has. Once filters clog, dirt starts getting past them.
What affects the cost of AHU cleaning
Before we fix a price, we need to know a few things. We look at:
- How easy every part is to reach
- When the work can happen, such as evenings, overnight or weekends
- The number of sites or systems
- Parking and loading at the site
Leaving it longer rarely makes the work cheaper. Problems in a system tend to grow, which can make the next visit longer. If you are not sure what’s needed, call us on 0345 646 2711, or send details by email for straight advice and a fixed quote.
What to send for a quote
We can often survey from pictures. The most useful are:
- The times we could work without disrupting the site
- How we’d reach plant on a roof or in a plant room
- Photos showing the whole system and its surroundings
- The postcode and the type of business
There’s no standard price list, because every site is different. We look at your system first, from pictures or on a visit, then send a fixed quote. To start, give us a ring on 0345 646 2711 or use the quote form.
How it works
At the end of the visit, someone from your team can look over the work with us. Anything we couldn’t reach or that needs attention is pointed out there and then, and it goes on the report too. The visit takes half a day to a full day per unit, with large plant planned over several shifts. Getting kit into a London building takes planning, so let us know where we can load and park in Netherne on-the-Hill.
- We look at the unit and the plant area during the survey.
- 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.
- We close every panel, hand the unit back and send the report and certificate.
Getting ready for the visit
- Agree a time when the area can be out of use
- Find the previous report, if there is one
- Arrange a key holder or contact on site
Ask for a quote
Need a price for AHU cleaning? Please give us a ring on 0345 646 2711, or send details by email with a few details about the site. We’ll talk you through the work and give you a fixed quote before anything is booked.