Greater London · Air handling unit cleaning
Air handling unit cleaning in Longlands, Greater London
AHU cleaning for Longlands and the surrounding area: a survey, a fixed price, careful work and proper paperwork. Call for a fixed quote.
- Rooms that smell stuffy when the system runs
- Dirty coils holding back the airflow
- Dirty filters cutting the airflow
Managing agents and facilities teams in Longlands
When the building owner and the occupier are different, the lease normally sets out who maintains what. We can quote either party, and the report can go to both.
Running several sites is easier with one contractor. We work across London and the South East, so a run of sites can go into one programme and kept on a regular cycle.
AHU cleaning in Longlands
A cooling coil drips condensate into a tray that should drain away. If the outlet blocks, standing water and slime build up, in the airstream that feeds the building. Clearing and cleaning the tray is central to every AHU clean. We’re often asked to deal with fan sections that haven’t been cleaned in years and plant that has been serviced but not cleaned, on supply and extract fans, dampers and louvres and filter sections.
Across London, offices, hotels, schools and healthcare buildings rely on mechanical ventilation, much of it supplied through air handling units on roofs or in basements. In a building in Longlands, dust and debris build up in the units and ductwork over time, which is what TR19® Air cleaning deals with.
Insurers, fire officers and environmental health officers all look at records. That is why every job is written up in a report with pictures, plus a TR19® certificate through the BESCA VHE portal where the work is a TR19® Grease clean.
- Where
- Longlands (DA15, DA14, SE9)
- Region
- Greater London
- Paperwork
- Written report with pictures
- Price
- Fixed quote, normally within a working day
- Hours
- When your site is closed, plus a 24/7 line
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
The process
Protection comes first: floors, worktops and anything near the work are covered. Then we make the system safe and start. The work on site takes anything from half a day for one small unit to several shifts for a plant room full of them, and the area is cleaned down before we leave. A name and number for whoever controls access to the building in Longlands saves time on the night.
- The survey covers the unit, its access and how it can be shut down.
- We sheet the area and the unit is isolated.
- Each section is cleaned of dust, debris and slime.
- Coils and trays are cleaned and the condensate drain cleared.
- We close every panel, hand the unit back and send the report and certificate.
Before we arrive
- Make sure equipment near the work can be switched off and left to cool
- Let us know how we reach the system, including roofs, risers and plant rooms
- Tell us where we can park and unload
Get a fixed quote
For a fixed quote, phone us on 0345 646 2711 or send us an email with the site type, your trading hours and a short description of the system. Photos and the last report, if you have one, make the quote quicker. We usually come back within one working day.
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Common problems we fix in Longlands
Filters catch most of the dust, but not all of it. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
Most sites get in touch when they notice one of these:
- Dust built up on fan impellers
- Dust-coated heating and cooling coils
- Odours coming through the supply air
- Air handling units never cleaned inside
For workplaces around New Eltham station with mechanical ventilation, cleaning can be done in the evening or at weekends.
Questions to ask before you book
- Whether the quote shows VAT
- Whether the figure could change on the day
- Whether the whole system is included, or only the parts that are easy to reach
- Whether the work can be done while the site is closed
Towns and villages near Longlands
Other services in Longlands
Staff cleaning versus specialist work
For ventilation and air handling systems, in-house care is mostly about checks: clear grilles, a log of filter changes and reporting anything odd. The inside of ducts and units needs a specialist.
If your staff spot something between visits, like drips, unusual noise, smells or damaged filters, they should report it rather than try to fix it. We’ll take a look and send you a fixed quote.
Leave it or put it right?
A clogged coil or dirty fan makes the unit work harder for the same airflow. That means more wear on the motor and rooms that feel less fresh, and a clean on your terms beats a breakdown on nobody’s. Shared walls, risers and roofs mean a problem at one London site seldom stays put.
One small site or a whole estate, we price it on the same basis: what needs doing, how we get to it and when. You’ll have a fixed price before work begins.
Why choose Duct Doctor in Longlands
- A written report with photos after each visit
- Fixed quotes, typically within one working day
- Work around your opening hours, with 24/7 emergency cover
- Full insurance on every job
Take a look at how cleaning jobs are priced or our accreditations.
Your questions about AHU cleaning in Longlands
Do you do school ventilation cleaning in Longlands in the summer holidays?
Yes. The holidays are the usual time for school work. Food Standards Agency records list about 29 schools, colleges and universities with registered kitchens within about a mile and a half of Longlands. Just call us on 0345 646 2711 or email us with your term dates and we will plan around them.
Does London parking affect a job in Longlands?
Tell us where a van can stop near your site in Longlands, and about any building rules on loading. Working overnight, as we often do in London, typically makes it simpler.
Is Longlands in your area?
Yes. Our technicians work in Longlands, within the South East and London area we cover.
What information do you need?
Only a few details: the address, the site type, your opening hours and how we reach the system. Photos and any previous paperwork make it quicker. After that, simply call 0345 646 2711, or send details by email.
Is there a report after cleaning?
Yes. You receive a certificate and a report showing each section before and after, including anything we think needs attention.
How much does AHU cleaning cost in Longlands?
It depends on the site, so we quote each one individually. To get one, give us a ring on 0345 646 2711 or send us an email with the site type, opening hours and a few photos.
Do you work with multi-site operators?
Yes. You deal with one contact for every site in our area, and visits can be set on a regular cycle.
Which accreditations do you hold?
Our accreditations are CHAS, SafeContractor and ISO 9001, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
How we price AHU cleaning
Sites vary more than people expect. The main factors:
- How many systems or sites are involved
- Site requirements such as sign-in and permits
- Access, including roofs, risers and ceiling voids
- The size of the system
Leaving it longer rarely makes the work cheaper. Build-up, wear and faults tend to get worse, not better, which can make the next visit longer. If you are not sure what’s needed, call 0345 646 2711, or send details by email and we’ll give you an honest view and a fixed quote.
What to send for a quote
There’s no need for technical detail. It helps if you can send:
- A few general shots of the system
- The times we could work without disrupting the site
- Close-ups of filters, grilles, hatches or access panels
- Any previous report or certificate
Photos are enough for some jobs, while others need a look on site. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, you get a fixed price before work begins.
Different parts, different methods
Fans and fan sections
Every bit of air passes the fan, so a dirty fan sends dirt downstream. We clean the impeller, housing and surrounding section.
Rooftop and plant room units
Ceiling-mounted and compact units are cleaned too. The space underneath is protected with sheeting first.
Longlands buildings and their air
There are about 29 schools, colleges and universities and about 52 caring premises (care homes, nurseries and hospitals) on the FSA’s food hygiene register across Longlands and its immediate surroundings (about a mile and a half). Buildings like these often rely on mechanical ventilation, which TR19® Air covers. About 1 mile south-east of Longlands is Queen Mary's Hospital, the nearest hospital. Hospitals show how much a building can rely on its ventilation, and smaller healthcare sites rely on theirs too. In London, ventilation plant is often on the roof or below ground, so the work is usually done out of hours.
School buildings such as Longlands Primary School are typically done in the holidays, so classrooms aren’t disturbed. Hospitals such as Queen Mary's Hospital (about 1 mile south-east) show how much a building can rely on clean ventilation, and smaller healthcare sites near Longlands are no different.
Longlands is about 1 mile west of Sidcup, in Greater London. Across the DA15 area, we can carry out AHU cleaning at your premises. We cover 764 places across Greater London, large and small. There’s also a page for London, about 9 miles away.
Work in DA15, DA14 and SE9 is surveyed, quoted and booked the same way as anywhere else. That includes premises on Main Road, Alder Road and Sidcup Road and nearby roads. Longlands sits on or near the A211, so getting to you is simple for AHU cleaning. Other places close to Longlands include Foxbury (1 mile south), New Eltham (1 mile north-west), Chislehurst (1 mile south-west), Coldharbour (1 mile west) and Blackfen (1 mile north). Larger places within reach include London (9 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (13 miles west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
Near you in Longlands
Locally, jobs take us to businesses close to Waring Park, Chislehurst School for Girls and Ye Olde Black Horse Inn and the streets around them. For rail, the closest station is New Eltham station, about 0.8 miles north-west of the centre. Well-known places in the area include Queen Mary's Hospital (1 mile south-east) and Greenwich Castle (5 miles north-west). For a walk, there’s Summer Hill and The Tarn.