Greater London · Air handling unit cleaning
Air handling unit cleaning in Upper Norwood, Greater London
AHU cleaning in Upper Norwood from ventilation hygiene specialists trading since 2009. Evenings, overnight and weekends, plus a 24/7 emergency line.
- Air handling units with blocked filters
- Plant that needs cleaning after a refit
- Dust built up on fan impellers
What happens if it’s left?
Leave an AHU uncleaned and the dirt does not stay put. It moves on into the ductwork and out into the rooms, so cleaning the ducts without the unit only goes so far. Leaving it on a busy London site only adds to the work.
When the work has to happen, how we reach it and how big the site is can all change the price. We take each of them into account and give you a fixed price before work begins.
Why us?
- Each visit written up, with pictures
- Work around your opening hours, with 24/7 emergency cover
- Fixed quotes from a survey or pictures
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
See what affects the cost and our accreditations.
AHU cleaning for kitchens and businesses in Upper Norwood
Think of an AHU clean as a full check-up for the ventilation. We look inside each section, clean what we find and record it with pictures, so you can see the unit’s condition for yourself. The work covers drain trays, heating and cooling coils and internal panels, and people most often call us about plant that has been serviced but not cleaned and air handling units with blocked filters.
In London, plant rooms are often in basements or on roofs reached through occupied floors, so work in Upper Norwood is often done in the evening or at weekends. Loading and parking are planned with the building first.
We are 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 have been trading since 2009.
- Where
- Upper Norwood (SE19, SE27, SE21)
- Region
- Greater London
- Records
- Photo report after each visit
- Price
- A fixed quote up front
- Working hours
- After hours by arrangement; emergencies any time
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
What the work involves, part by part
Internal casing and panels
Access doors and panels are opened in turn and closed properly afterwards, and check every one is shut.
Heating and cooling coils
Cooling coils stay damp in use, so dirt on them can turn sticky. We clean the coil and the tray beneath it together.
Signs you need AHU cleaning in Upper Norwood
Wherever there’s a cooling coil, there’s condensate. A blocked outlet or a badly sloped tray leaves standing water, and slime and smells soon follow.
Keep an eye out for these warning signs:
- Debris and leaves in the fresh air intake
- Dust-coated heating and cooling coils
- Rooms that smell stuffy when the system runs
- Air handling units due a clean after building work
Hospitals such as St Christopher's Hospice (about 1.3 miles east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Upper Norwood are no different.
Before booking anyone
- Whether they’re fully insured
- What paperwork you get at the end
- When the next visit should be, and why
- Whether the whole system is included, or only the parts that are easy to reach
Places near Upper Norwood
Other services in Upper Norwood
AHU cleaning in Upper Norwood: local notes
Food Standards Agency data includes about 36 schools, colleges and universities, about 93 care, childcare and hospital premises and about 3 hotels, B&Bs and guest houses across Upper Norwood and its immediate surroundings (about a mile and a half). Where buildings like these have air handling units, filters, coils and drain trays need regular attention. Getting kit to a London plant room typically means lifts, stairs and an agreed loading slot. The nearest hospital to Upper Norwood is St Christopher's Hospice, about 1.3 miles east. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
If you run an office near Gipsy Hill station, its supply ductwork can gather dust for years before anyone looks inside.
Upper Norwood is about 4 miles south-east of Stockwell, in Greater London. We provide AHU cleaning for businesses, landlords and public buildings in Upper Norwood and the rest of Greater London. We cover 764 places across Greater London, large and small. We also work in London, about 6 miles from Upper Norwood.
We cover every part of SE19, SE27 and SE21 for AHU cleaning and the roads nearby. AHU cleaning is available to premises on Dover Road, Hawke Road and Tudor Road and nearby roads. Upper Norwood sits on or near the A214, which makes travel easy for AHU cleaning. We also cover the places around Upper Norwood: Norwood New Town (1 mile west), Gipsy Hill (1 mile north-east), West Norwood (1 mile north-west), Crystal Palace (1 mile east) and Anerley (1 mile east). Within a short drive, we also cover London (6 miles north), City of Westminster (7 miles north-west), Marylebone (7 miles north), Kensington (7 miles north-west), St Pancras (7 miles north) and Shoreditch (7 miles north).
What’s near Upper Norwood
Locally, jobs take us to businesses close to The Sparrowhawk pub, Long Meadow and Rockmount Primary School and the streets around them. There’s a railway station in Upper Norwood itself: Gipsy Hill station. A little further out are St Christopher's Hospice (1.3 miles east) and Crystal Palace Museum (0.5 miles east). Green spaces nearby include Dulwich Upper Wood and Knight's Hill.
How the visit works
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 the rest is down to us. Before we leave, the area is tidied and the paperwork follows. Managed blocks in London often need contractors booked in ahead, and we’re happy to deal with the agent directly for a site in Upper Norwood.
- First the unit is surveyed, from pictures or a visit, and the scope agreed.
- With your site team, the unit is switched off and isolated, then the area around it protected.
- Filters, coils, fan section and casing are cleaned in turn.
- We clean out the drain tray and make sure it drains.
- A TR19® certificate and photo report follow the clean.
Before we arrive
- Tell us about site rules, permits or sign-in
- Let us know how we reach the system, including roofs, risers and plant rooms
- Let us know when the site is closed or quiet
Ask for a quote
Photos are the quickest way to a quote: the system from a couple of angles, plus any access panels or hatches. Add the site type and your opening hours, and many jobs can be priced from that alone.
Advice
When it’s something else
We’d rather tell you now than book work that won’t help, so these are the things it won’t cover:
- Problems with the unit’s controls or sensors
- The supply and extract ducts, quoted separately
- Ventilation that was badly designed in the first place
Not sure which it is? You can phone us on 0345 646 2711 or send us an email and we will tell you honestly.
Parts of the system we cover
- Filter sections
- Internal panels
- Drain trays
- Heating and cooling coils
- Supply and extract fans
- Dampers and louvres
Your questions about AHU cleaning in Upper Norwood
Can parking be tricky for a job in Upper Norwood?
We plan it in advance, so let us know about loading bays, permits and access rules at the building. Where restrictions apply in the day, an evening or overnight visit normally gets round them.
Do you clean school ventilation in Upper Norwood in the holidays?
Yes. The holidays are the usual time for school work. Around Upper Norwood, the Food Standards Agency lists about 36 schools and colleges with registered kitchens within a mile and a half or so. Booking early in the term gives the best choice of holiday dates.
Which accreditations do you hold?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we are fully insured.
Can you clean the ducts connected to the AHU?
Yes, the ductwork, grilles and diffusers the unit serves. The survey shows whether the ducts need cleaning now.
What does AHU cleaning cost?
The cost depends on the size of the system, its condition, access and timing. Ask us for a fixed quote and we’ll typically reply within one working day.
How long does an AHU clean take?
Typically the clean takes from a few hours for a compact unit to a day or more for a large one. We plan the shutdown around that, including evenings or weekends.
What do you clean inside the unit?
Everything inside the unit that air passes over, from the intake and filters through the coils and fan to the outlet. The photo report shows each section before and after.
Do you offer maintenance contracts?
Yes. Regular plans can run on 3, 6 or 12-monthly cycles, to suit the system and how it’s used.
For landlords and multi-site operators
For anyone managing more than one site, we can plan visits across the whole estate and price them together. Every building has its own written report, 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 visits at different addresses can be planned together and kept on a regular cycle.
How we price AHU cleaning
We don’t publish a price list, because no two systems are the same. What we look at:
- Any permits to work or inductions
- When the work can happen, such as evenings, overnight or weekends
- A single visit or a regular plan
- What state the system is in
Several systems or sites on one quote often makes better use of the time. Mention every system or site you need covered and we’ll price it together.
What we need to know
There’s no need for technical detail. It helps if you can send:
- How we’d reach plant on a roof or in a plant room
- Wide pictures of the system and the area around it
- Your last certificate, test record or report
- Where the site is and what kind of site it is
Want a quote for AHU cleaning? Please call 0345 646 2711, or email photos and tell us about the site. We will talk you through the work and give you a fixed quote before anything is booked.