Combi Conversion
Combi Conversion
Combi conversion in Kingston upon Thames — remove the cylinder and loft tanks and free up a whole cupboard, with mains-pressure hot water on demand.
About this service
Combi Conversion in South West London, done properly the first time
A conversion is more than swapping a boiler: the cylinder comes out, cold water storage tanks are removed from the loft, redundant pipework is capped or stripped, and the system is converted to sealed operation with a new expansion vessel and pressure relief.
It is one of the most popular jobs we do in Kingston upon Thames's smaller terraces and flats, where the airing cupboard is valuable space. Typically two days on site.
We check mains flow rate first. If your incoming supply cannot deliver enough litres per minute, a conversion would leave you with a worse shower than you have now — and we will tell you before you commit, not after.
Why Maxfix
Why choose Maxfix for combi conversion
Premium workmanship, fixed pricing and a service experience built around you.
Cylinder and loft tanks removed
Airing cupboard freed up
Mains flow rate tested before we advise
Sealed system converted properly
Full system flush included
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 combi conversion
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
How long does a combi conversion take?
Usually two working days — one to strip out and re-pipe, one to install, commission and make good.
Will my shower be as good?
That depends entirely on your incoming mains flow rate, which we measure at survey. Good flow means an excellent shower; poor flow means we would recommend against converting.
Are your combi conversion engineers Gas Safe registered?
Yes — every engineer working on combi conversion 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 combi conversion?
Yes. We provide a free, no-obligation written quote with fixed pricing, so you know exactly what your combi conversion will cost before any work starts.
Which areas of South West London do you cover for combi conversion?
We provide combi conversion 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 combi conversion with a Gas Safe engineer — fixed pricing, open 24 hours.
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Book combi conversion today
Free quotes, fixed pricing and Gas Safe engineers across Kingston upon Thames, Richmond, Wimbledon, Twickenham and the rest of South West London.