Greater London · Air handling unit cleaning
Slade Green AHU cleaning
Professional AHU cleaning in and around Slade Green, booked around your opening hours and signed off in writing with pictures.
- Leaves and litter drawn into the unit
- Coils clogged with dust and debris
- Units that have only ever had filter changes
What staff can safely do
Staff cleaning doesn’t replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but the parts you cannot see still need a specialist at the right interval.
Logging matters as much as cleaning. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, next to our reports.
How we handle AHU cleaning in Slade Green
Coils are where a lot of the dirt ends up. Dirt on the fins holds back air and makes the unit work harder to do the same job. We clean coils with methods suited to their condition, taking care not to damage the fins. If you have coils clogged with dust and debris and units needing a clean before a new tenant or handover, we can help.
London buildings tend to keep their plant on the roof or below ground, so work in Slade Green is often done in the evening or at weekends. Loading and parking are planned with the building first.
For insurers and inspectors, the record counts. That’s why every job is written up in a report with photos, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Location
- Slade Green (DA8, DA1, DA7)
- Wider area
- Greater London
- Records
- Written report with photos
- Quote
- A fixed price before we start
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Updated
- 30 October 2026
Common problems we fix in Slade Green
An AHU’s intake draws in outdoor air and everything in it: dust, pollen, leaves and debris. The intake section and first filters take the brunt, and the finer material travels on.
Common reasons sites call us are:
- Air handling units with blocked filters
- Dirty coils holding back the airflow
- Blocked condensate drains and slimy trays
- Plant that needs cleaning after a refit
For schools like St. Paul's (Slade Green) Church of England Primary School, the holidays are the usual time to inspect and clean ventilation.
What to look for in a quote
- Proof of insurance
- Whether they recommend a next date
- Whether inaccessible sections are listed on the report
- What hours they’ll be on site
How it works
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. The visit takes anything from half a day for one small unit to several shifts for a plant room full of them. Most London sites cannot stop for the day, so work in Slade Green is usually done overnight, early in the morning or at weekends.
- First we agree when the unit can be switched off, including evenings or weekends.
- Before cleaning, each section is photographed.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- The fan and drain tray are cleaned and the drain checked.
- We take after photos and issue the certificate and report.
Before we arrive
- Let us know when the site is closed or quiet
- Tell us about access, such as roof hatches, plant rooms, ceilings or locked areas
- Allow time for equipment near the work to be turned off and cool down
How to get a quote
Quoting starts with a diagnosis, from your photos and details or, where that is not enough, a survey on site. Then we send a fixed price so you know the cost before we start.
Read more
AHU cleaning around Slade Green
Going by the FSA’s register, there are about 19 schools, colleges and universities and about 31 hospitals, care homes and childcare premises serving food within 1.5 miles or so of the middle of Slade Green. Many buildings of this kind have supply and extract ductwork that gathers dust and needs inspecting. Ventilation cleaning in London buildings is usually planned for evenings or weekends. Joyce Green Hospital is the nearest hospital, about 1.3 miles east of Slade Green. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too.
For workplaces around Slade Green station with mechanical ventilation, cleaning can be done in the evening or at weekends. Healthcare ventilation, from large hospitals like Joyce Green Hospital (about 1.3 miles east) to small clinics, depends on clean filters, coils and ducts.
Slade Green is about 1 mile south-east of Erith, in Greater London. Anywhere in DA8, we cover AHU cleaning for commercial sites. 764 places in Greater London are on our list, from busy centres to quieter spots. We also work in London, about 13 miles from Slade Green.
Work in DA8, DA1 and DA7 is surveyed, quoted and booked the same way as anywhere else. That includes premises on Oak Road, Elm Road and Moat Lane and nearby roads. Nearby, we also carry out AHU cleaning in North End (1 mile west), Barnes Cray (1 mile south), Bexley Riverside (1 mile west), Barnehurst (1 mile west) and Northumberland Heath (1 mile west). We also work in nearby towns such as London (13 miles west), City of Westminster (15 miles west), Marylebone (15 miles west), St Pancras (14 miles west), Shoreditch (12 miles west) and Walthamstow (13 miles north-west).
Landmarks near Slade Green
Around Slade Green, our work takes us to kitchens and buildings near Braeburn Park, Railway Tavern and Haberdashers' Aske's Crayford Academy. There’s a railway station in Slade Green itself: Slade Green station. Other landmarks nearby include Broadway Shopping Centre (2.3 miles west) and Erith Museum (1.3 miles north-west). Not far away are Wansunt Pit.
Why act early in Slade Green
A clean unit feeds cleaner air into the ductwork, so the ducts and grilles stay cleaner between cleans. It also means the next inspection has less to find. A building in Slade Green may have flats or offices above and alongside, and a fault in the system can affect them too.
Putting the work off seldom saves money. Problems in a system tend to grow, and a neglected system can mean more work. If you’re unsure, ring 0345 646 2711 or email us and we’ll give you an honest view and a fixed quote.
Why choose Duct Doctor in Slade Green
- CHAS, SafeContractor and ISO 9001
- One number for every site across the South East and London
- Out-of-hours work and a 24/7 emergency line
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Read our cost guide and our accreditations.
Managing agents and facilities teams in Slade Green
The Fire Safety Order 2005 puts the duty to manage fire risk on the responsible person, which may be the employer, owner, landlord, FM or managing agent. With shared responsibility, good records help everyone.
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
When something else is needed
Some problems need a different service or another trade:
- Mechanical faults with motors, belts or bearings
- Coils that are corroded or leaking and need replacing
- Controls and BMS settings that run the unit
If in doubt, phone us on 0345 646 2711 or drop us a line and we will say what we think.
What we work on in Slade Green
- Drain trays
- Filter sections
- Internal panels
- Dampers and louvres
- Supply and extract fans
- Heating and cooling coils
Places near Slade Green
Also in Slade Green
Part by part
Rooftop and plant room units
Many AHUs sit on roofs or in plant rooms with limited access. Access is planned during the survey so the quote reflects it.
Drain trays
Standing water in a tray sits right where the air passes. We clean it and note if the slope or the drain needs attention.
FAQs for Slade Green
Can a school’s ventilation in Slade Green be done out of term time?
Yes, holiday work suits schools best. There are about 19 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Slade Green. You can ring 0345 646 2711 or drop us a line with the dates the site is empty.
Can parking be tricky for a job in Slade Green?
Tell us where a van can stop near your site in Slade Green, and about any building rules on loading. Night visits tend to make loading easier on London streets.
Which parts of an air handling unit do you clean?
All the internal parts the air touches, from the intake and filters through the coils and fan to the outlet. The photo report shows each section before and after.
Can we book visits on a schedule?
Yes. Scheduled maintenance plans are part of what we do, set at the interval the system needs. Each report recommends when the next visit should be.
Can you quote from pictures?
Yes, for many jobs. Send wide shots, close-ups of any access panels and anything that worries you, and a fixed quote typically follows within one working day. If pictures aren’t enough, we’ll survey first.
How much notice should we give?
For planned work, earlier is better, especially if the next clean or test is due soon. For emergencies, we take calls 24/7.
Is there a report after cleaning?
Yes, a TR19® certificate and a photo report. The report also suggests when the unit should next be inspected.
Do you survey before quoting?
Yes. For many sites, pictures and a few details are enough, while bigger or harder-to-see systems are surveyed on site.