Greater London · Air handling unit cleaning
Air handling unit cleaning in Crooked Billet, Greater London
AHU cleaning for Crooked Billet, from a team that has been trading since 2009. Out-of-hours visits and 24/7 emergency callout.
- Blocked condensate drains and slimy trays
- Plant that has been serviced but not cleaned
- Air handling units with blocked filters
Staff cleaning versus specialist work
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. Cleaning inside ducts and units is specialist work.
Good housekeeping makes our visits easier, not unnecessary. Clean filters and tidy surfaces slow the build-up, but the parts you cannot see still need a specialist at the right interval.
AHU cleaning in Crooked Billet, done properly
Every supply and extract system relies on the air handling unit at its centre: it draws air in, filters it, heats or cools it and pushes it round the ductwork. Whatever builds up inside it travels with that air, so cleaning the unit matters as much as cleaning the ducts. Common call-outs are for stale or musty smells from the ventilation and leaves and litter drawn into the unit, across dampers and louvres, heating and cooling coils and supply and extract fans.
In London, plant rooms are often in basements or on roofs reached through occupied floors, so work in Crooked Billet is often done in the evening or at weekends. Loading and parking are planned with the building first.
Think of the report as the system’s health record: dated, with photos, and showing what was done. Grease extract cleans are also certificated to TR19® Grease through the BESCA VHE portal, ready for your insurer.
- Place
- Crooked Billet (SW19, SW20)
- Region
- Greater London
- Records
- Report and photos after the visit
- Price
- Fixed quote, normally within a working day
- When we work
- Nights, weekends or holidays to suit you
- Call
- 0345 646 2711
- Last updated
- 30 October 2026
Crooked Billet questions
Can you work in Crooked Billet outside opening hours?
Yes, nights and weekends are routine for us. Your customers, staff or residents in Crooked Billet needn’t be disturbed. Tell us your opening hours when you ask for a quote.
Is parking a problem for work in Crooked Billet?
London parking can be tight, so details of loading bays and permits help. Night visits tend to make loading easier on London streets.
Will the ventilation be off while you clean?
Yes, while the clean is under way. Out-of-hours work is available so the building isn’t left without ventilation when it’s busy.
When should our AHU next be cleaned?
It depends on the unit, the filters and how the building is used. Regular inspection shows when it’s due, and we’ll suggest an interval after the first clean.
Will we get paperwork for the AHU clean?
Yes, a TR19® certificate and a photo report. It includes a recommended date for the next check.
How much does AHU cleaning cost?
There’s no set price, as it depends on the job: the size of the system, its condition, access and when we can work. We fix the price before any work starts.
Is Crooked Billet in your area?
Yes. Crooked Billet is part of the area we cover, as part of our area across London and the South East.
Can you fix a faulty AHU?
Mechanical repairs to the unit are for your HVAC maintenance contractor. We clean the unit and report anything we see that needs attention.
What affects the quote in Crooked Billet
Before we fix a price, we need to know a few things. We look at:
- How easy every part is to reach
- Whether several sites go on one quote
- Site rules, permits and inductions
- The size of the system
What you pay depends on the size of the system, the condition it’s in and how easy it is to reach. You get a fixed price before work begins, so there are no surprises.
Asking for a quote
When you contact us, these details help:
- The site address and the type of premises
- Close-ups of filters, grilles, hatches or access panels
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
Quoting starts with a diagnosis, from your photos and details or, where that isn’t enough, a survey on site. Then we send a fixed price so you know the cost before any work starts.
Signs you need AHU cleaning in Crooked Billet
No filter stops everything. What gets through settles on coils, fans and the inside of the casing, building up layer by layer.
Clients usually contact us after spotting one of these:
- Leaves and litter drawn into the unit
- Dirty fans and fan housings
- Odours coming through the supply air
- Plant that has been serviced but not cleaned
For schools like Wimbledon College, the holidays are the usual time to inspect and clean ventilation.
What to look for in a quote
- What insurance they carry
- Exactly which parts of the system are covered
- Whether VAT is included
- Whether a written report and photos are included
Nearby places to Crooked Billet
Other services in Crooked Billet
Aftercare tips
No system stays clean for ever, but care slows the build-up. A few tips:
- Make sure the unit’s access doors open easily
- Keep the area around the fresh air intake clear
- Stick to the filter change plan
- Report musty smells from the vents straight away
The report shows each section of the unit before and after, along with anything we couldn’t reach. Any defects we noticed, like a leaking tray or damaged lining, are listed.
Keep the area around the intake clear. What’s near the intake ends up in the unit.
The process
Night work is normal for us. A lot of visits happen overnight or at weekends, so a kitchen or building can carry on as usual the next day. The visit itself takes a single shift for a typical unit, longer for large or heavily soiled ones. Loading bays, visitor permits and roof access are the first things we ask about for a site in Crooked Billet.
- 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.
- We clean the coils and clear the tray and drain.
- The unit is closed up and handed back, with a report to follow.
How to prepare
- Make sure someone can let us in and lock up afterwards
- Allow time for equipment near the work to be turned off and cool down
- Tell us the best time to work, such as after service or at a weekend
Getting a quote
Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in photos, get a survey first. Either way, the quote is fixed before any work is booked.
Advice
What the work involves, 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, before we quote.
Internal casing and panels
The inside walls and floor of the casing collect dust and debris. Each section is cleaned from the intake through to the outlet.
For landlords and multi-site operators
Facilities teams in offices, schools and healthcare sites book us too across Greater London. Work can be phased by floor, building or site to keep disruption down.
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. Where responsibility is shared, records matter even more.
What AHU cleaning looks like in Crooked Billet
Food Standards Agency data includes about 28 schools, colleges and universities, about 44 caring premises (care homes, nurseries and hospitals) and about 6 hotels and B&Bs within roughly a mile and a half of the centre of Crooked Billet. 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. Crooked Billet’s nearest hospital, Atkinson Morley Hospital, is about 0.5 miles south-west. Healthcare ventilation is a good example of why supply ducts need inspecting: the air goes straight to patients.
Hospitals such as Atkinson Morley Hospital (about 0.5 miles south-west) show how much a building can rely on clean ventilation, and smaller healthcare sites near Crooked Billet are no different. For workplaces around Raynes Park station with mechanical ventilation, cleaning can be done in the evening or at weekends.
Crooked Billet is about 1 mile west of Wimbledon, in Greater London. Whatever kind of site you run in Crooked Billet, AHU cleaning is something we can help with. We can work out of hours so trading is not interrupted. Across Greater London, we cover 764 places, and Crooked Billet is one of them. For sites nearby, see our London page, about 8 miles away.
Here we cover the SW19 and SW20 postcode area for AHU cleaning. That includes premises on Camp Road, Mckay Road and Pepys Road and nearby roads. If your site is just outside Crooked Billet, we cover Copse Hill (1 mile south-west), Wimbledon (1 mile east), Bushey Mead (1 mile south), Wimbledon Chase (1 mile south-east) and Kingston Vale (1 mile north-west). We also work in nearby towns such as London (8 miles north-east), City of Westminster (7 miles north-east), Marylebone (8 miles north-east), Kensington (6 miles north), St Pancras (9 miles north-east) and Shoreditch (10 miles north-east).
Local landmarks in Crooked Billet
In Crooked Billet, that means kitchens and buildings near Hollymount School, Cannizaro Park and Ursuline Preparatory School, among other places. The closest station to Crooked Billet is Raynes Park station, roughly 0.9 miles south of the centre. Other landmarks nearby include Southside Wandsworth (2.7 miles north-east) and Wimbledon Museum (0.5 miles east). Open spaces near Crooked Billet include Kew Gardens Lake and Henman Hill.