Greater London · Air handling unit cleaning
Air handling unit cleaning in Crofton Park, Greater London
AHU cleaning for Crofton Park, from a team that has been trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Fan sections that haven’t been cleaned in years
- Drain trays holding standing water
- Plant that has been serviced but not cleaned
About our AHU cleaning in Crofton Park
All the building’s air passes through the fan, so dust on its blades and housing ends up in the airstream. Fan, housing and the surrounding panels are cleaned as part of the job, once the unit has been shut down and isolated. Common call-outs are for rooms that smell stuffy when the system runs and blocked condensate drains and slimy trays, on supply and extract fans, filter sections and drain trays.
Many London buildings have had their ventilation extended and altered through several fit-outs, with old runs left behind that are hard to reach. An inspection first shows where cleaning is needed in a building in Crofton Park.
The sign-off is always in writing: a written report, dated and illustrated with photos, 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
- Crofton Park (SE4, SE6, SE23)
- Region
- Greater London
- Records
- Photo report after each visit
- Quotes
- Fixed quote, normally within a working day
- When we work
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Crofton Park buildings and their air
The FSA’s food hygiene register lists about 52 schools, colleges and universities, about 106 hospitals, care homes and childcare premises and about 7 hotels and guest houses with registered kitchens or food service within roughly a mile and a half of the centre of Crofton Park. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. In London, ventilation plant is often on the roof or below ground, so the work is usually done out of hours. Crofton Park’s nearest hospital, University Hospital Lewisham, is about 0.7 miles east. Clean air matters most where people are unwell, and that’s as true in a care home as in a hospital.
Wherever a school like Stillness Infant School has ducted ventilation, a half-term visit keeps the work out of lesson time. For workplaces around Crofton Park station with mechanical ventilation, cleaning can be done in the evening or at weekends.
Crofton Park is about 1 mile south of New Cross, in Greater London. We carry out AHU cleaning for commercial premises of every kind in Crofton Park and the rest of Greater London. Our Greater London coverage runs to 764 places, Crofton Park among them.
We cover every part of the SE4, SE6 and SE23 postcode area for AHU cleaning and the streets around it. Whether your site is on Ivy Road, Nash Road and Lindal Road or anywhere close by, we can help. If your site is just outside Crofton Park, we cover Brockley (1 mile north-west), Ladywell (1 mile east), Honor Oak (1 mile west), Forest Hill (1 mile south-west) and Nunhead (1 mile north-west). Larger places within reach include London (4 miles north-west), City of Westminster (7 miles north-west), Marylebone (7 miles north-west), Kensington (8 miles north-west), St Pancras (6 miles north-west) and Shoreditch (5 miles north).
What’s near Crofton Park
Locally, jobs take us to businesses close to Blythe Hill Tavern, Prendergast Ladywell School and Blythe Hill Fields, among other places. Crofton Park has its own railway station: Crofton Park station. A little further out are University Hospital Lewisham (0.7 miles east) and Horniman Museum and Gardens (1.4 miles south-west). For a walk, there’s One Tree Hill and Knight's Hill.
Fixed quotes for AHU cleaning in Crofton Park
We quote each job individually. These are the things that affect it:
- Working hours and out-of-hours timing
- Whether we need access equipment or extra panels
- Site rules, permits and inductions
- One-off work versus a regular cycle
One small site or a whole estate, the quote is built the same way: what needs doing, how we get to it and when. You will have a fixed price before we start.
What to send for a quote
There’s no need for technical detail. Just send:
- Photos showing the whole system and its surroundings
- The roof, plant room or outside wall the system runs to
- The site address and the type of premises
- Your opening hours and when the area is out of use
Need a price for AHU cleaning? Please phone us on 0345 646 2711 or use the quote form and tell us about the site. We will explain what we’d do and send a fixed quote before you commit to anything.
Different parts, different methods
Internal casing and panels
We open each section through its doors and close them securely when we are done, and check every one is shut.
Fans and fan sections
Dust on a fan impeller adds weight and wear. A clean fan runs more smoothly.
The process
There are three stages on the day: set-up, the treatment itself and the sign-off. Set-up means sheeting and making equipment safe, and the sign-off is a written report with photos. The middle part takes longest, which takes anything from half a day for one small unit to several shifts for a plant room full of them. Expect the work in Crofton Park to happen after your last customer leaves, not during trading.
- We survey the unit from pictures or on site and agree what’s included.
- The unit is shut down with your site team and the area protected.
- 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.
Preparing for the visit
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Let us know about permits to work or site inductions
- Tell us the best time to work, such as after service or at a weekend
Get a fixed quote
The quickest way to a quote is to send pictures: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Add the site type and your opening hours, and we can price many jobs without a visit.
Advice
What staff can safely do
Away from the kitchen, the in-house job is mainly checking: keeping grilles clear, noting unusual noise or smells and logging filter changes. Cleaning inside ducts and units is specialist work.
Keep a record of what your team does. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, alongside our reports.
Places near Crofton Park
More services for Crofton Park
When to call us in Crofton Park
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.
Most sites get in touch after spotting one of these:
- Filters that are clogged or overdue
- Fan sections that haven’t been cleaned in years
- Dirty coils holding back the airflow
- Drain trays holding standing water
Hospitals such as University Hospital Lewisham (about 0.7 miles east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Crofton Park are no different.
Before you book anyone
- Whether a written report and photos are included
- Whether the quote is based on a survey or photos
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- When the next visit should be, and why
Common questions in Crofton Park
Do you do school ventilation cleaning in Crofton Park in the summer holidays?
Yes, and it’s the easiest time to do it. With about 52 schools and colleges on the FSA’s register within roughly a mile and a half of Crofton Park, 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.
Does London parking affect a job in Crofton Park?
A loading bay, a visitor permit or off-street space near the site in Crofton Park makes the visit easier to plan. Where restrictions apply in the day, an evening or overnight visit normally gets round them.
What about areas you can’t get to?
Anything we can’t reach goes on the report, with pictures where possible, and we explain what access is needed, for example new access panels.
How often should an air handling unit 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.
Do you give a certificate after the clean?
Yes. A TR19® certificate and photo report are sent after the clean, with any faults we noticed.
What’s included in an AHU clean?
Filters, coils, drain trays, the fan and the internal surfaces are all covered. Filters are cleaned or changed as agreed in the quote.
Do you clean the ductwork as well?
Yes. Ventilation ductwork cleaning to TR19® Air is part of what we do. It’s often worth doing both at once, and we can survey both on the same visit.
What do you do with what you remove?
Waste is contained during the work and removed when we leave, from grease and debris to used cleaning water. None of it is left on site.
What happens if it’s left?
When the unit is clean, less dirt reaches the ducts, so the ducts and grilles stay cleaner between cleans. That makes the next inspection of a building in Crofton Park simpler. Choosing the date yourself beats having a fault choose it for you.
What you pay reflects the actual work. That’s why every job is surveyed first, and why the quote is fixed before work begins.
Why choose Duct Doctor in Crofton Park
- Trading since 2009
- Fixed quotes, typically within one working day
- One number for every site across the South East and London
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Honest limits
We won’t sell you work that doesn’t address the problem, so here are the limits:
- A system that’s undersized for the building
- Controls and BMS settings that run the unit
- Faulty motors, drives or bearings
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
- Supply and extract fans
- Internal panels
- Heating and cooling coils
- Drain trays
- Dampers and louvres