Unvented Cylinder Installation
Unvented Cylinder Installation
Unvented hot water cylinder installation in Kingston upon Thames and South West London by G3-qualified engineers — mains-pressure hot water at every tap.
About this service
Unvented Cylinder Installation in South West London, done properly the first time
An unvented cylinder runs at mains pressure, so upstairs showers in a three-storey Kingston upon Thames townhouse perform as well as the kitchen tap downstairs. No loft tanks and no gravity feed.
Unvented work is notifiable and must be carried out by a G3-qualified engineer. Sizing, the expansion vessel, the tundish and the discharge pipe route all have to be right, and the discharge route is what usually decides where the cylinder can go.
We install stainless steel cylinders from the major manufacturers, commission them properly and leave you with the benchmark documentation you will need for warranty and for selling the house.
Why Maxfix
Why choose Maxfix for unvented cylinder installation
Premium workmanship, fixed pricing and a service experience built around you.
G3-qualified engineers
Mains-pressure hot water everywhere
Cylinder sized to household demand
Correct tundish and discharge routing
Benchmark documentation provided
12-month workmanship guarantee
How it works
A calm, four-step process
From the first call to a tidy handover — no surprises, no jargon, no mess.
Get in touch
Call us or send a quick enquiry — we'll respond within an hour during working hours.
Free survey & quote
An engineer assesses the work and gives you a clear, written, fixed-price quote.
Book a date that suits you
Choose a slot that fits around your schedule — we work evenings and weekends.
Work completed cleanly
Uniformed engineers carry out the work, tidy up fully and walk you through everything before leaving.
Get a fast quote for unvented cylinder installation
Free, no-obligation quotes. Most calls answered within 30 seconds.
Trusted experts
Why choose Maxfix
Gas Safe Registered
Every engineer registered & ID-checked
Manufacturer Accredited [to be confirmed]
[accreditations to be confirmed]
Open 24 Hours, Every Day
Call any time — including nights and weekends
Fixed Price, Always
Agreed before we start — no hourly creep
Frequently asked
Your questions, answered
What size cylinder do I need?
It depends on occupants, bathrooms and usage patterns rather than floor area. We size it at survey so you neither run out nor pay to reheat water you never use.
Does an unvented cylinder need servicing?
Yes — annually. The expansion vessel charge and the safety valves must be checked, and most manufacturer warranties require it.
Are your unvented cylinder installation engineers Gas Safe registered?
Yes — every engineer working on unvented cylinder installation in South West London is Gas Safe registered, manufacturer-trained and fully insured to £5m public liability. We'll show our ID on arrival.
Do you offer a free quote for unvented cylinder installation?
Yes. We provide a free, no-obligation written quote with fixed pricing, so you know exactly what your unvented cylinder installation will cost before any work starts.
Which areas of South West London do you cover for unvented cylinder installation?
We provide unvented cylinder installation across the whole of South West London, including Kingston upon Thames, Richmond, Wimbledon, Twickenham, Surbiton, Fulham, Putney, Teddington, New Malden, Molesey, Hounslow, Brentford, Isleworth, Long Ditton, Worcester Park, Roehampton, Raynes Park, Morden, Petersham, Motspur Park and the surrounding KT, TW and SW postcodes. Local engineers means short call-out times wherever you are.
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Ready when you are
Book unvented cylinder installation with a Gas Safe engineer — fixed pricing, open 24 hours.
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Book unvented cylinder installation today
Free quotes, fixed pricing and Gas Safe engineers across Kingston upon Thames, Richmond, Wimbledon, Twickenham and the rest of South West London.