Greater London · Air handling unit cleaning
AHU Cleaning in Puddle Dock
AHU cleaning in Puddle Dock from ventilation hygiene specialists trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Dirty fans and fan housings
- Units needing a clean before a new tenant or handover
- Air handling units never cleaned inside
Part by part
Rooftop and plant room units
Units on roofs and in plant rooms can be awkward to reach. Access is planned during the survey so the quote reflects it.
Heating and cooling coils
A dirty coil holds back the air and makes heating and cooling less effective. A clean gets air moving through the coil properly again.
AHU cleaning in Puddle Dock
Heating and cooling coils trap dust that gets past the filters. A coated coil restricts airflow and makes the unit work harder. We clean coils with methods suited to their condition, taking care not to damage the fins. The work covers drain trays, heating and cooling coils and supply and extract fans, and common reasons people get in touch are air handling units due a clean after building work and odours coming through the supply air.
Many London buildings have had their ventilation extended and altered through several fit-outs, leaving sections that are hard to reach and seldom cleaned. An inspection first shows where cleaning is needed in a building in Puddle Dock.
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.
- Place
- Puddle Dock (RM14)
- Region
- Greater London
- Records
- Report and photos after the visit
- Price
- A fixed price before work begins
- When we work
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
Common problems we fix in Puddle Dock
Air handling units are usually tucked away on roofs, in plant rooms or above ceilings and are rarely seen by anyone but maintenance staff. Months can pass without anyone looking inside.
Look out for any of the following:
- Drain trays holding standing water
- Air handling units never cleaned inside
- Dirty coils holding back the airflow
- Rooms that smell stuffy when the system runs
If you manage a school such as The James Oglethorpe Primary School, ventilation cleaning is best booked for the holidays.
What to look for in a quote
- How areas they can’t reach will be recorded
- How they set the interval to the next visit
- How VAT is shown on the quote
- Proof of insurance
Staff cleaning versus specialist work
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. That is our job.
Staff cleaning doesn’t replace a specialist visit; it supports it. Clean filters and tidy surfaces slow the build-up, but hidden parts of the system still need specialist attention.
Puddle Dock questions
Is parking a problem for work in Puddle Dock?
Parking and loading in London need planning, so tell us about bays, permits and building rules when you book. Night visits tend to make loading easier on London streets.
Do you work overnight in Puddle Dock?
Yes, we can come after you close and finish before you open. The work in Puddle Dock can fit around your hours. Just ring 0345 646 2711 or drop us a line with your opening times and we’ll plan around them.
Where does the waste go?
We take it away at the end of the visit. While we work, it’s kept contained to keep the area clean.
How much does AHU cleaning cost?
The cost depends on the size of the system, its condition, access and timing. Ask us for a fixed quote and we will normally reply within one working day.
How long will the unit be out of action?
The work takes one overnight shift for many single units, with bigger plant phased. Bigger units can be phased, so call 0345 646 2711 or send us an email to talk it through.
Do you clean the ductwork as well?
Yes, the ductwork, grilles and diffusers the unit serves. We’ll tell you after the survey whether the ducts need it.
Do you offer maintenance contracts?
Yes. Plans on a 3, 6 or 12-monthly cycle are available, to suit the system and how it’s used.
How do you protect the area?
We start with protection: floor sheeting and covers over nearby surfaces and equipment. We tidy up and take our waste away before we leave.
Ventilation in Puddle Dock buildings
Food Standards Agency records list about 4 schools, colleges and universities and about 9 hospitals, care homes and childcare premises registered as food businesses within about 1.5 miles of central Puddle Dock. Busy, occupied buildings like these are where clean supply air matters most. London plant rooms are often on roofs or in basements reached through occupied floors. Puddle Dock’s nearest hospital, Spire Hartswood Hospital, is about 2.8 miles north. If you run a surgery, clinic or care home, your ventilation deserves the same care as a hospital’s, on a smaller scale.
If you run a surgery, dental practice or care home near Puddle Dock, clean ventilation matters as much to you as to a hospital like Spire Hartswood Hospital (about 2.8 miles north).
Puddle Dock is about 3 miles north of South Ockendon, in Greater London. We carry out AHU cleaning for businesses, landlords and public buildings in Puddle Dock and the rest of Greater London. Across Greater London, we cover 764 places, and Puddle Dock is one of them. We also work in Chelmsford, around 15 miles away.
Here we cover the RM14 postcode area for AHU cleaning. We also cover Cranham (1 mile west), North Ockendon (1 mile south), Upminster (2 miles west), Great Warley (2 miles north) and Upminster Bridge (2 miles west). Further out, we also cover Walthamstow (14 miles west), Orpington (15 miles south-west), Plaistow (12 miles west), Leyton (13 miles west), New Cross (15 miles south-west) and Romford (5 miles west).
What’s near Puddle Dock
We work in commercial kitchens and buildings around Hall Mead School, among other places. The closest station to Puddle Dock is Upminster station, about 1.9 miles west of the centre. A little further out are Upminster Tithe Barn Museum of Nostalgia (1.7 miles west) and Spire Hartswood Hospital (2.8 miles north). Green spaces nearby include Cranham Brickfields.
Multi-site and managed buildings
Facilities teams in offices, schools and healthcare sites book us too in Puddle Dock and across Greater London. Work can be phased by floor, building or site to keep disruption down.
Running several sites is easier with one contractor. We cover South East England and London, so a run of sites can go into one programme and kept to a regular schedule.
Places near Puddle Dock
Also in Puddle Dock
Leave it or put it right?
If people in a building in Puddle Dock complain about stuffy or smelly air, the AHU is worth looking at. Cleaning it deals with the cause rather than the symptom. Every month a London system goes without attention adds to what has to be done later.
No two sites are the same, so each one gets its own fixed quote. Size, access, the condition of the system and when we can work all make a difference.
Why Puddle Dock businesses choose us
- CHAS and SafeContractor accredited, with ISO 9001
- Fully insured
- One contact for all your sites in London and the South East
- A written report with pictures after every visit
See our cost guide and how to check a contractor.
Aftercare tips
After the visit, a few habits help the work last:
- File each AHU report in the maintenance log
- Stick to the filter change plan
- Report musty smells from the vents straight away
- Clear leaves and litter away from the intake
The ducts served by the unit may need attention too. A clean unit feeding dirty ducts only solves half the problem, and we can survey both.
Make sure access doors and panels on the unit open easily. If a section is hard to get into, it tends not to get checked.
How the visit works
We work around your opening hours, not the other way round. Most visits are booked for when the area is out of use, such as evenings, overnight, early mornings or weekends. Once we’re in, the area is sheeted and anything that has to be off is turned off and cooled, and the job takes anything from half a day for one small unit to several shifts for a plant room full of them. Many London buildings have a managing agent, a security desk or a permit-to-work system, so tell us who to contact in Puddle Dock.
- 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.
- Coils and trays are cleaned and the condensate drain cleared.
- The unit is closed up and handed back, with a report to follow.
Preparing for the visit
- Let us know about permits to work or site inductions
- Tell us where we can park and unload
- Move anything stored near the system
Ask for a quote
To help us quote: where the site is, what it is and its opening hours, photos of the system and any previous report or certificate. Then ring 0345 646 2711, or send details by email.