Greater London · Air handling unit cleaning
AHU Cleaning in Sanderstead
One call covers cleaning of air handling units, including filters, coils, drain trays, fans and internal surfaces in Sanderstead: survey, fixed quote, work and sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Units needing a clean before a new tenant or handover
- Dirty coils holding back the airflow
- Debris and leaves in the fresh air intake
How we handle AHU cleaning in Sanderstead
An air handling unit is the heart of a building’s ventilation: air is pulled in, filtered, conditioned and sent out through the ducts. Anything that collects inside the unit can end up in the rooms it serves, which is why we clean the unit itself, not just the ducts. The work covers drain trays, filter sections and heating and cooling coils, and common reasons people get in touch are intake sections clogged with outdoor debris and dirty fans and fan housings.
London offices and flats often have ductwork added through successive refits, leaving sections that are hard to reach and seldom cleaned. An inspection first shows where cleaning is needed in a building in Sanderstead.
A written report with pictures follows every visit, so you have a record of what was done and when. Kitchen extract cleaning to TR19® Grease is certificated through the BESCA Vent Hygiene Elite portal.
- Where
- Sanderstead (CR2, CR8)
- Region
- Greater London
- Paperwork
- Report and pictures after the visit
- Price
- A fixed price before we start
- Hours
- Evenings, overnight and weekends; 24/7 emergencies
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Part by part
Filters
Filter condition tells you a lot about the rest of the unit. They’re photographed before and after for your records.
Rooftop and plant room units
Smaller units in ceiling voids are part of the work as well. We protect the area below before opening them.
AHU cleaning around Sanderstead
Food Standards Agency data includes about 16 schools, colleges and universities and about 50 caring premises (care homes, nurseries and hospitals) within about 1.5 miles of central Sanderstead. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. In London, ventilation plant is often on the roof or below ground, so the work is usually done out of hours. About 1.4 miles west of Sanderstead is Purley War Memorial Hospital, the nearest hospital. Clean air matters most where people are unwell, and that is as true in a care home as in a hospital.
If you run a surgery, dental practice or care home near Sanderstead, clean ventilation matters as much to you as to a hospital like Purley War Memorial Hospital (about 1.4 miles west). If you run an office near Riddlesdown station, its supply ductwork can gather dust for years before anyone looks inside. For schools like Gresham Primary School, the holidays are the usual time to inspect and clean ventilation.
Sanderstead is about 2 miles east of Purley, in Greater London. If you need AHU cleaning in Sanderstead, it’s easy to get a fixed quote: please phone us on 0345 646 2711 or send us an email. We work across South East England and London, Sanderstead included. Our Greater London coverage runs to 764 places, Sanderstead among them. For sites nearby, see our London page (11 miles or so).
Here we cover the CR2 and CR8 postcode area for AHU cleaning. That includes premises on Hyde Road, Brian Avenue and Sundown Avenue and nearby roads. Main roads around Sanderstead include the A2022, so getting to you is simple for AHU cleaning. Neighbouring places we cover for AHU cleaning include Riddlesdown (1 mile south-west), Kenley (1 mile south-west), South Croydon (1 mile north-west), Selsdon (1 mile north-east) and Hamsey Green (1 mile south-east). Further out, we also cover London (11 miles north), City of Westminster (13 miles north), Marylebone (13 miles north), Kensington (12 miles north-west), St Pancras (13 miles north) and Shoreditch (13 miles north).
Local landmarks in Sanderstead
Around Sanderstead, our work takes us to kitchens and buildings near Selsdon Park Hotel, Littleheath Woods and Riddlesdown Collegiate and the streets around them. The closest station to Sanderstead is Riddlesdown station, about 0.8 miles west. Other landmarks nearby include Purley War Memorial Hospital (1.4 miles west) and Croydon Airport Visitor Centre (2.1 miles north-west). Not far away are Duppas Hill and Foxley Wood.
Aftercare tips
Aftercare is simple, and it helps at the next visit:
- Don’t store bins or materials near the intake
- Check the drain tray is emptying during routine visits
- Report stiff or damaged access doors
- Note any water around the unit or leaks below it
The report suggests a date for the next inspection or clean, based on what we found. Under TR19® Air the timing is set by inspection and risk, not a fixed calendar.
Make the drain tray part of every maintenance visit. Catching a slow drain early stops standing water building up.
What AHU cleaning can’t fix
Some problems need a different service or another trade:
- Breakdowns that need a mechanical engineer
- A system that is undersized for the building
- Problems with the unit’s controls or sensors
Not sure which it is? You can call 0345 646 2711, or send details by email and we will tell you honestly.
What the work covers
- Heating and cooling coils
- Internal panels
- Dampers and louvres
- Supply and extract fans
- Filter sections
- Drain trays
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 the rest is down to us. Before we leave, the area is tidied and the paperwork follows. For a job in Sanderstead, tell us about loading bays, permits, lifts and roof access when you book.
- The survey covers the unit, its access and how it can be shut down.
- 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.
How to prepare
- Let us know how we reach the system, including roofs, risers and plant rooms
- Allow time for equipment near the work to be turned off and cool down
- Find the previous report, if there is one
Getting a quote
Here’s what helps us quote: where the site is, what it is and its opening hours, a few pictures and any previous report or certificate. Then give us a ring on 0345 646 2711, or send details by email.
Related advice
Sanderstead questions
Do you work at weekends in Sanderstead?
Yes, nights and weekends are routine for us. It means the site in Sanderstead keeps running as normal. Tell us your opening hours when you ask for a quote.
Does London parking affect a job in Sanderstead?
London parking can be tight, so details of loading bays and permits help. If the building has a loading slot system, we will book into it.
Which kinds of sites do you work on?
All kinds of commercial and public premises: kitchens, offices, schools, healthcare, retail, leisure and food production. Work is timed around how each site runs.
How much notice do you need?
For planned work, earlier is better, especially if the next clean or test is due soon. Emergencies are different, because our line is open 24/7.
What happens to the waste?
Waste is contained during the work and removed when we leave, including grease, debris and dirty water. None of it is left on site.
How do you keep the site clean during the work?
With sheeting and covers, before anything else happens. The work is kept contained and leave the area clean.
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 are fully insured.
How much does AHU cleaning cost?
It depends on the site, so we quote each one individually. To get one, phone us on 0345 646 2711 or send us an email with the site type, opening hours and a few pictures.
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Also in Sanderstead
Fixed quotes for AHU cleaning in Sanderstead
The diagnosis comes before the price. We look at:
- How easy every part is to reach
- Travel, parking and unloading
- The number of sites or systems
- One-off work versus a regular cycle
We don’t list prices on the website, because the cost depends on the site in front of us. Call for a fixed quote, and we’ll talk you through it.
What to send for a quote
You don’t need the technical terms. It helps if you can send:
- Where the site is and what kind of site it is
- Close-ups of filters, grilles, hatches or access panels
- A few general shots of the system
- Any previous report or certificate
There’s no standard price list, because no two systems are the same. We look at your system first, from photos or on a visit, then send a fixed quote. To get going, call us on 0345 646 2711 or use the quote form.
Managing agents and facilities teams in Sanderstead
Managing agents often deal with us directly. Send the address, what’s needed and how access works, and we’ll send a fixed quote.
From a single site to a large estate, you get the same standard: a survey first, a fixed quote, the work timed around the site and a report with pictures.
Leave it or put it right?
Dirty coils and fans make the unit strain to move the same air. That means more wear on the motor and rooms that feel less fresh, and a planned clean is far less disruptive than a breakdown. Shared walls, risers and roofs mean a problem at one London site seldom stays put.
The price reflects the work, not guesswork. That is why we survey first, from photos or on site, and the price is agreed before we start.
Why Sanderstead businesses choose us
- Every job surveyed first
- In business since 2009
- Full insurance on every job
- Member of BESCA Vent Hygiene Elite, cleaning to BESA TR19® Grease