Greater London · Air handling unit cleaning
AHU Cleaning in Nunhead
AHU cleaning across Nunhead and nearby, booked around your opening hours and finished with a written report and pictures.
- Units needing a clean before a new tenant or handover
- Dirty coils holding back the airflow
- Odours coming through the supply air
About our AHU cleaning in Nunhead
Coils are where a lot of the dirt ends up. A coated coil restricts airflow and makes the unit work harder. Coils are cleaned carefully, with methods chosen so the fins are not flattened. If you’re dealing with condensate trays that won’t empty and debris and leaves in the fresh air intake, we can put it right, from dampers and louvres, internal panels and heating and cooling coils onwards.
London buildings often depend on air handling units in plant rooms or on the roof to supply fresh air. For a building in Nunhead, dust settles in the units and ducts year after year, which is what TR19® Air cleaning deals with.
The sign-off is always in writing: a dated report with pictures of the work, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. It shows what was done and what, if anything, couldn’t be reached.
- Location
- Nunhead (SE15, SE4, SE14)
- Wider area
- Greater London
- Reporting
- Photo report after each visit
- Quote
- A fixed price before any work starts
- Working hours
- Evenings, overnight and weekends; 24/7 emergencies
- Phone
- 0345 646 2711
- Last updated
- 30 October 2026
Common problems we fix in Nunhead
Dirt in an AHU matters in two ways: air quality, since the unit feeds occupied rooms, and performance, since dirt makes it strain. For the people using the building every day, that is the air they breathe for hours on end.
Look out for these warning signs:
- Units needing a clean before a new tenant or handover
- Plant that has been serviced but not cleaned
- Odours coming through the supply air
- Dirty filters cutting the airflow
School buildings such as Ivydale Primary School are normally done in the holidays, so classrooms aren’t disturbed.
Comparing quotes
- Whether the work can be done while the site is closed
- How VAT is shown on the quote
- What happens if part of the system can’t be accessed
- If the quote is a fixed price or an estimate
Landlords, agents and facilities managers
When the building owner and the occupier are different, it’s worth checking the lease for who maintains the systems. We’re happy to deal with either side, and the report can go to both.
Facilities teams in offices, schools and healthcare sites book us too in Nunhead and across Greater London. Work can be phased by floor, building or site to keep disruption down.
Fixed quotes for AHU cleaning in Nunhead
We don’t publish a price list, because no two systems are the same. The quote depends on:
- A single visit or a regular plan
- Site requirements such as sign-in and permits
- The times the site is available
- The condition we find in the survey
Every site is different, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all play a part.
Asking for a quote
Photos let us diagnose from a distance. The most useful are:
- Problems your staff have spotted
- The times we could work without disrupting the site
- Photos showing the whole system and its surroundings
- Where the plant sits or the system leaves the building, such as a roof or outside wall
Every quote begins with a look at the system, either from pictures and details you send or from a site visit. Then we send a fixed price so you know the cost before any work starts.
Places near Nunhead
More services for Nunhead
AHU cleaning around Nunhead
There are about 69 schools, colleges and universities, about 60 hospitals, care homes and childcare premises and about 5 hotels and B&Bs on the FSA’s food hygiene register within 1.5 miles or so of the middle of Nunhead. Buildings like these often rely on mechanical ventilation, which TR19® Air covers. The nearest hospital to Nunhead is Southwark Adult Education Institute, about 0.7 miles north. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. Many London buildings have had their ductwork altered through several fit-outs, so an inspection comes first.
For workplaces around Nunhead station with mechanical ventilation, cleaning can be done in the evening or at weekends. Hospitals such as Southwark Adult Education Institute (about 0.7 miles north) show how much a building can rely on clean ventilation, and smaller healthcare sites near Nunhead are no different.
Nunhead is about 1 mile south-west of New Cross, in Greater London. From the centre of Nunhead to the outskirts, we cover AHU cleaning for every kind of premises, from a single unit to a large public building. Across Greater London, we cover 764 places, Nunhead among them.
Work in SE15, SE4 and SE14 follows the same survey, fixed quote and written report as everywhere else we cover. We cover sites on Rye Road, Nash Road and Kitto Road and the roads around them. We also cover the places around Nunhead: Telegraph Hill (1 mile north-east), Honor Oak (1 mile south), Peckham (1 mile north-west), New Cross (1 mile north-east) and Brockley (1 mile south-east). Within a short drive, we also cover London (3 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (7 miles west), St Pancras (5 miles north-west) and Shoreditch (5 miles north).
Around Nunhead
In Nunhead, that means kitchens and buildings near The Ivy House, Peckham Rye and Allenby Tutorial Trust and the streets around them. There’s a railway station in Nunhead itself: Nunhead station. Other landmarks nearby include Greenwich Castle (2.4 miles north-east) and Lewisham Shopping Centre (1.7 miles east). For a walk, there’s Knight's Hill and One Tree Hill.
Different parts, different methods
Filters
What’s on the filters is a good clue to what’s further in. They’re photographed before and after for your records.
Fans and fan sections
Dust on a fan impeller adds weight and wear. Cleaning keeps it running as intended.
Why act early in Nunhead
A clean unit feeds cleaner air into the ductwork, so the whole system stays cleaner for longer. It also means the next inspection has less to find. A building in Nunhead may have flats or offices above and alongside, and a fault in the system can affect them too.
One small site or a whole estate, we price it on the same basis: the work involved, the access and the timing. The price is fixed before we start.
Why book with us
- Work around your opening hours, with 24/7 emergency cover
- Fixed quotes from a survey or photos
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Accredited under CHAS and SafeContractor, with ISO 9001
Take a look at our cost guide and our accreditations and certificates.
What we do, step by step
Before we leave, we walk the area with whoever is on site. Anything we couldn’t reach or that needs attention is pointed out there and then, and the same goes into the written report. All told, the work takes one overnight shift for many single units, with bigger plant phased. Security desks and permits-to-work are routine in London, so let us know what your building in Nunhead needs from us.
- The survey covers the unit, its access and how it can be shut down.
- The area is protected and the unit made safe.
- Dirt and debris are removed from each section.
- 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
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Let us know about parking and loading
- Mention any sign-in, permit or induction we need
How to get a quote
There’s no standard 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 start, give us a ring on 0345 646 2711 or email us.
Related advice
What a clean will not put right
We’ll always give you a straight diagnosis, so here’s what this work can’t put right:
- Problems with the unit’s controls or sensors
- Ductwork downstream of the unit, which is a separate clean
- Breakdowns that need a mechanical engineer
Not sure which it is? You can give us a ring on 0345 646 2711, or send details by email and we’ll tell you honestly.
Where we work
- Filter sections
- Supply and extract fans
- Heating and cooling coils
- Internal panels
- Dampers and louvres
- Drain trays
Your questions about AHU cleaning in Nunhead
How do you handle parking and loading in Nunhead?
A loading bay, a visitor permit or off-street space near the site in Nunhead makes the visit easier to plan. Working overnight, as we often do in London, usually makes it simpler.
Do you do school ventilation cleaning in Nunhead in the summer holidays?
Yes, and it’s the easiest time to do it. With about 69 schools and colleges on the FSA’s register within roughly a mile and a half of Nunhead, it pays to plan holiday dates ahead. Tell us your holiday dates and we’ll book the visit for when the site is empty.
Are you accredited?
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 carry full insurance.
Do you repair air handling units?
Motors, belts, controls and coils that need repair are a job for your maintenance contractor. We will flag anything we notice during the clean.
What’s included in an AHU clean?
All the internal parts the air touches, from intake to discharge, including coils, fan and drain trays. You get a photo report showing each part before and after.
Do you survey before quoting?
Yes, always. We diagnose before we treat: the survey tells us what the system needs and how to reach it, and the quote is based on that.
How often should an air handling unit be cleaned?
There’s no single answer; it comes down to the building and the unit. Regular inspection shows when it’s due, and the report recommends a next date.
What does AHU cleaning cost?
Size, condition, access and working hours all affect the cost. Ask us for a fixed quote, usually ready within one working day.