Greater London · Air handling unit cleaning
AHU Cleaning in Wennington
Need AHU cleaning in Wennington? We diagnose first, fix the price and book the work around your hours, finishing with a written report and pictures.
- Odours coming through the supply air
- Leaves and litter drawn into the unit
- Plant that has been serviced but not cleaned
Why deal with it now?
Dirty coils and fans make the unit strain to move the same air. 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.
Every site is different, so each one gets its own fixed quote. The size of the job, how we reach it, its condition and the working hours all make a difference.
Why us?
- A single point of contact for sites across the South East and London
- Work around your opening hours, with 24/7 emergency cover
- Fully insured
- A BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
See our cost guide and our accreditations.
How we handle AHU cleaning in Wennington
If the units serving a building in Wennington have only had filter changes for years, the coils, fan and casing can be carrying far more dirt than anyone has seen. A full AHU clean takes in the whole unit. If you’re dealing with units needing a clean before a new tenant or handover and odours coming through the supply air, we can put it right.
London buildings tend to keep their plant on the roof or below ground, so ventilation cleaning in Wennington is normally planned out of hours. Loading and parking are planned with the building first.
Every visit ends with a written report and pictures, so you have a record of what was done and when. Where the work is a TR19® Grease clean, the certificate is issued through the BESCA Vent Hygiene Elite portal.
- Place
- Wennington (RM13)
- Region
- Greater London
- Reporting
- Photo report after every visit
- Quote
- A fixed price before we start
- When we work
- Nights, weekends or holidays to suit you
- Phone
- 0345 646 2711
- Page updated
- 30 October 2026
Honest limits
Some problems need a different service or another trade:
- Faulty motors, drives or bearings
- Controls and BMS settings that run the unit
- Ductwork downstream of the unit, which is a separate clean
If you are not sure, just phone us on 0345 646 2711 or drop us a line and we’ll give you a straight answer before you book.
What the work covers
- Drain trays
- Dampers and louvres
- Heating and cooling coils
- Supply and extract fans
- Internal panels
- Filter sections
How it works
We turn up at the time agreed with you, which is often after service, overnight or at a weekend. Equipment that has to be off is switched off and allowed to cool first, and the area around the work is covered and protected. On site, it takes one overnight shift for many single units, with bigger plant phased. If your building in Wennington has sign-in rules, permits or key holders, mention them when you book.
- The survey covers the unit, its access and how it can be shut down.
- The area is protected and the unit made safe.
- 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.
Preparing for the visit
- Mention any parking or loading restrictions
- Let us know how we reach the system, including roofs, risers and plant rooms
- Allow time for equipment near the work to be turned off and cool down
How to get a quote
There’s no standard price list, because no two systems are the same. We look at your system first, from photos or on a visit, then send a fixed quote. To start, call 0345 646 2711, or email photos.
Related advice
Nearby places to Wennington
What else we do in Wennington
AHU cleaning around Wennington
Going by the FSA’s register, there are about 8 schools, colleges and universities and about 11 care, childcare and hospital premises serving food in Wennington and the streets around it, up to about 1.5 miles out. Classrooms, bedrooms and care spaces are often served by ducted air, and that ductwork collects dust over time. St George's Hospital is the nearest hospital, about 2.8 miles north of Wennington. Healthcare buildings depend on clean supply and extract ventilation, and the same applies to surgeries, clinics and care homes. Ventilation cleaning in London buildings is typically planned for evenings or weekends.
If you manage a school such as Brady Primary School, ventilation cleaning is best booked for the holidays.
Wennington is about 4 miles south of Hornchurch, in Greater London. Wherever you are in the RM13 postcode area, we can take on AHU cleaning. Our Greater London coverage runs to 764 places, and Wennington is one of them. London is in our area too, around 14 miles away.
Work in RM13 is surveyed, quoted and booked the same way as anywhere else. We also cover Aveley (1 mile east), Hacton (2 miles north), South Ockendon (3 miles east), Upminster Bridge (4 miles north) and Hornchurch (4 miles north). Within a short drive, we also cover London (14 miles west), St Pancras (15 miles west), Shoreditch (13 miles west), Walthamstow (12 miles north-west), Hoxton (13 miles west) and Whitechapel (12 miles west).
Near you in Wennington
In Wennington, that means kitchens and buildings near Lennard Arms Inn, Wildspace Conservation Park and Harris Academy Rainham. The nearest railway station is Rainham (Essex) station, roughly 1.4 miles north-west. Well-known places in the area include St George's Hospital (2.8 miles north) and Erith Museum (2.5 miles south-west). The countryside around Wennington includes Rainham Marshes Nature Reserve.
What your team can do, and what needs us
For ventilation and air handling systems, in-house care is mostly about checks: keeping grilles clear, noting unusual noise or smells and logging filter changes. The inside of ducts and units needs a specialist.
Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they can’t safely do is clean inside the ductwork, the fan or the risers, which is where we come in.
Wennington questions
How do you handle parking and loading in Wennington?
Tell us where a van can stop near your site in Wennington, and about any building rules on loading. Much of our London work is done overnight, which helps.
Can the work in Wennington be done at night or at weekends?
Yes, out-of-hours work is a big part of what we do. It means the site in Wennington keeps running as normal. When you ring 0345 646 2711 or send us an email, mention when the site is quiet.
Do you work in Wennington?
Yes. We work across Greater London, Surrey, Kent, Sussex, Hampshire, the Isle of Wight, Berkshire, Buckinghamshire, Oxfordshire, Hertfordshire and Essex, Wennington included.
What should I send you?
The site address, the type of premises and your opening hours, plus pictures of the system and your last certificate or report if you have one.
Do you need to switch the unit off?
Yes. We can’t clean a running unit, so it’s switched off and made safe first. The shutdown is planned with whoever runs the building.
Which accreditations do you hold?
BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease, plus CHAS, SafeContractor and ISO 9001. We are fully insured and have been trading since 2009.
Where does the waste go?
We take it away when we go. During the work, it’s contained so the area stays clean.
What types of premises do you cover?
All kinds of commercial and public premises: from restaurants, pubs and hotels to schools, hospitals, care homes, offices, shops and food production sites. We fit the work around how the site operates.
Common problems we fix in Wennington
No filter stops everything. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
Any of these means the system needs a check-up:
- Air handling units never cleaned inside
- Dust-coated heating and cooling coils
- Debris and leaves in the fresh air intake
- Blocked condensate drains and slimy trays
Hospitals such as St George's Hospital (about 2.8 miles north) show how much a building can rely on clean ventilation, and smaller healthcare sites near Wennington are no different.
What your quote should include
- When the next visit should be, and why
- Whether the price is fixed
- How VAT is shown on the quote
- Proof of insurance
Part by part
Internal casing and panels
Access doors and panels are opened in turn and closed properly afterwards, and check every one is shut.
Filters
Dirty filters cut airflow and let dirt slip past their frames. The filter section is cleaned so new or cleaned filters sit properly.
Keeping the system healthy
Here’s the after-treatment advice, in brief:
- Store the TR19 paperwork where auditors can find it
- Report water on the plant room floor
- Do not ignore odours coming through the grilles
- Do not store bins or materials near the intake
The ducts served by the unit may need attention too. Cleaning the unit and ducts together gives the best result, and we can survey both.
Change or clean filters on time. Once filters clog, dirt starts getting past them.