Combi Boiler Installation
Combi Boiler Installation
Combi boiler installation in Kingston upon Thames and across South West London — one compact unit for heating and instant hot water, with no cylinder and no loft tanks.
About this service
Combi Boiler Installation in South West London, done properly the first time
A combi suits the majority of Kingston upon Thames homes: the Victorian and Edwardian terraces around New Kingston upon Thames, the 1930s semis in KT2 and the purpose-built flats in Putney and TW9 all tend to have one or one-and-a-half bathrooms, which is exactly what a combi handles well.
The important part is sizing. A combi that is too small gives disappointing showers; one that is too large short-cycles and wastes gas. We calculate from your incoming mains flow rate and your actual hot water demand, not from a rule of thumb.
We fit combis from every major UK brand, register the manufacturer warranty on your behalf and leave you with a magnetic filter, correct gas pipe sizing and a properly routed condensate — the three things that cause most avoidable breakdowns later.
Why Maxfix
Why choose Maxfix for combi boiler installation
Premium workmanship, fixed pricing and a service experience built around you.
Mains flow rate measured before we size anything
No cylinder or tank — space back in the airing cupboard
Magnetic filter fitted as standard
All major brands installed
Manufacturer warranty registered for you
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 boiler 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
Is a combi boiler right for my Kingston upon Thames home?
Usually yes for one to one-and-a-half bathrooms with decent mains pressure. If you have two or more bathrooms in regular simultaneous use, a system boiler and cylinder is often the better answer, and we will say so.
How long does a combi installation take?
A straight combi-for-combi swap is normally a single day. A conversion from a regular boiler and cylinder is typically two days because tanks and cylinder come out and pipework is reworked.
What will it cost?
It depends on the boiler chosen, your existing pipework, gas supply sizing, flue route and access. We give a fixed written price after a survey rather than a figure over the phone that changes later.
Are your combi boiler installation engineers Gas Safe registered?
Yes — every engineer working on combi boiler 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.
Which areas of South West London do you cover for combi boiler installation?
We provide combi boiler 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 combi boiler installation with a Gas Safe engineer — fixed pricing, open 24 hours.
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Book combi boiler installation today
Free quotes, fixed pricing and Gas Safe engineers across Kingston upon Thames, Richmond, Wimbledon, Twickenham and the rest of South West London.