Greater London · Air handling unit cleaning
AHU Cleaning in North Greenwich
AHU cleaning for businesses, landlords and public buildings in North Greenwich. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Condensate trays that will not empty
- Air handling units due a clean after building work
- Stale or musty smells from the ventilation
The process
We start by comparing what we find with the survey or your photos. If anything is different, we talk it through with the person on site before carrying on. From there, it takes half a day to a full day per unit, with large plant planned over several shifts. Night and weekend working is normal for us in London, and a site in North Greenwich is no exception.
- We agree a shutdown window that suits the building.
- We take before photos of each section of the unit.
- Filters, coils and internal surfaces are cleaned from intake to discharge.
- The fan and drain tray are cleaned and the drain checked.
- After pictures are taken and the certificate issued.
Getting ready for the visit
- Find the previous report, if there is one
- Mention any parking or loading restrictions
- Make sure equipment near the work can be switched off and left to cool
How to get a quote
To get a fixed quote, call 0345 646 2711 or send us an email and tell us the type of site, your opening hours and roughly what the system looks like. Photos and the last report, if you have one, make the quote quicker. You will typically have a quote within one working day.
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About our AHU cleaning in North Greenwich
Drain trays under cooling coils are meant to empty. If the outlet blocks, standing water and slime build up, right in the path of the air going into the building. Cleaning and clearing it is a key part of the job. We’re often asked to deal with intake sections clogged with outdoor debris and units that have only ever had filter changes, on drain trays, supply and extract fans and internal panels.
London buildings often depend on air handling units in plant rooms or on the roof to supply fresh air. In a building in North Greenwich, dust and debris build up in the units and ductwork over time, which is what TR19® Air cleaning deals with.
It’s worth checking any contractor’s accreditations. We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, with full insurance on top.
- Location
- North Greenwich (E14, SE8, SE10)
- Wider area
- Greater London
- Reporting
- Photo report after every visit
- Quote
- A fixed price before we start
- Working hours
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
Questions from North Greenwich
What do you need to know about parking in North Greenwich?
We plan it in advance, so let us know about loading bays, permits and access rules at the building. Working overnight, as we often do in London, normally makes it simpler.
Do you work overnight in North Greenwich?
Yes, evening, overnight and weekend work is normal for us. The work in North Greenwich can fit around your hours. Just give us a ring on 0345 646 2711, or send details by email with your opening times and we’ll plan around them.
How much does AHU cleaning cost in North Greenwich?
It depends on the site, so we quote each one individually. For a quote, ring 0345 646 2711, or email photos and tell us about the site and its opening hours.
What do you clean inside the unit?
Everything inside the unit that air passes over, from intake to discharge, including coils, fan and drain trays. The photo report shows each section before and after.
Do you need to switch the unit off?
Yes, for the time we’re working on it. Out-of-hours work is available to keep disruption down.
What does TR19 mean?
It’s the industry benchmark for cleaning ventilation and kitchen extract systems, written by BESA. It sets out inspection, cleaning and record keeping, and it takes a risk-based approach.
How far ahead should we book?
The more notice, the better, especially for out-of-hours work. Quotes usually come back within one working day, and there’s a 24/7 line for emergencies.
How long does it take to clean an air handling unit?
Expect it to take anything from half a day for one small unit to several shifts for a plant room full of them. The unit’s size and condition make the biggest difference, and we will confirm the time when we quote.
What your team can do, and what needs us
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 will take a look and give you a fixed quote.
Some jobs should never be done in-house: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease call for the right kit, training and safe access. Leave those to us.
What the work involves, part by part
Fans and fan sections
Dust on a fan impeller adds weight and wear. Cleaning keeps it running as intended.
Internal casing and panels
Damaged internal linings or loose panels can shed material into the air. We note any we find in the report.
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 planned clean is far less disruptive than a breakdown. Choosing the date yourself beats having a fault choose it for you.
Several systems or sites on one quote can make for a more efficient booking. Tell us about everything you’d like looked at, and you will get one fixed quote.
Why North Greenwich businesses choose us
- Ventilation hygiene specialists since 2009
- Evenings, overnight and weekends, plus 24/7 emergency callout
- A fixed price before any work starts
- Survey first, then a fixed quote
Take a look at how cleaning jobs are priced and our accreditations.
What AHU cleaning can’t fix
A few issues sit outside what this work can do:
- Building management system faults
- Mechanical faults with motors, belts or bearings
- Coils that are corroded or leaking and need replacing
If in doubt, give us a ring on 0345 646 2711 or send us an email and we’ll say what we think.
Parts of the system we cover
- Heating and cooling coils
- Supply and extract fans
- Filter sections
- Drain trays
- Internal panels
- Dampers and louvres
When to call us in North Greenwich
Cooling coils create condensation, and that water has to go somewhere. If the drain tray outlet blocks or the tray doesn’t fall properly, water stands in it, and that’s where slime and odours start.
If you notice any of these, it’s worth a diagnosis:
- Debris and leaves in the fresh air intake
- Fan sections that haven’t been cleaned in years
- Condensate trays that won’t empty
- Plant that needs cleaning after a refit
Healthcare buildings such as Miller General Hospital, about 1 mile south, depend on their ventilation; if you manage a surgery, clinic or care home near North Greenwich, yours matters too.
Comparing quotes
- Which accreditations they hold, and whether you can check them
- Whether VAT is included
- Whether the whole system is included, or only the parts that are easy to reach
- What hours they’ll be on site
Managing agents and facilities teams in North Greenwich
Whether it’s one building or many, you get the same standard: a survey first, a fixed quote, the work timed around the site and a report with photos.
When the building owner and the occupier are different, the lease normally sets out who maintains what. We’re happy to deal with either side, and the report can go to both.
Nearby places to North Greenwich
What else we do in North Greenwich
Ventilation in North Greenwich buildings
The FSA’s food hygiene register lists about 52 schools, colleges and universities, about 69 caring premises (care homes, nurseries and hospitals) and about 16 hotels and B&Bs with registered kitchens or food service in and around North Greenwich, up to about a mile and a half out. Where buildings like these have air handling units, filters, coils and drain trays need regular attention. The nearest hospital to North Greenwich is Miller General Hospital, about 1 mile south. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients. London plant rooms are often on roofs or in basements reached through occupied floors.
For schools like Harbinger Primary School, the holidays are the usual time to inspect and clean ventilation. If you manage offices or shops near Greenwich station, their ventilation can be inspected and cleaned out of hours.
North Greenwich is about 1 mile north-west of Greenwich, in Greater London. We carry out AHU cleaning for businesses, landlords and public buildings in North Greenwich and the rest of Greater London. 764 places in Greater London are on our list, large and small.
AHU cleaning in E14, SE8 and SE10 is surveyed, quoted and booked the same way as anywhere else. Whether your site is on Creek Road, Wynan Road and Undine Road or a nearby road, our technicians can take on the work. We also cover Isle of Dogs (1 mile south-east), Millwall (1 mile west), Cubitt Town (1 mile north-east), Deptford (1 mile south-west) and Greenwich (1 mile south-east). Larger places within reach include London (3 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (5 miles north-west) and Shoreditch (4 miles north-west).
Local landmarks in North Greenwich
Around North Greenwich, our work takes us to kitchens and buildings near Laban Centre, Canary Wharf College 3 and St. Paul's, among other places. Other local landmarks include Mudchute Park and Farm (less than half a mile north-east) and The Ferry House Public House (less than half a mile south-east). The closest station to North Greenwich is Greenwich station, roughly 0.8 miles south. Well-known places in the area include Old Royal Naval College (0.7 miles south-east) and Greenwich Castle (1.1 miles south-east). Open spaces near North Greenwich include Sue Godfrey Nature Park and Tower Hill.