A combi boiler is the most popular type in UK homes, providing both central heating and instant hot water from a single compact unit. If your combi boiler is failing, inefficient, or beyond repair, Norvera can arrange a fixed-price replacement through a Gas Safe registered installer.
A combination (combi) boiler heats water directly from the mains on demand — there's no need for a separate hot water cylinder or cold water tank. This makes combi boilers space-efficient and ideal for smaller to medium-sized properties with one or two bathrooms. They deliver hot water only when a tap or shower is turned on.
Combi boilers work best in homes with one or two bathrooms and a reasonable mains water pressure. They are less suited to large homes where multiple showers or taps may be used simultaneously, or where a home previously had a hot water cylinder setup. If you're converting from a system or regular boiler to a combi, there is additional pipework involved.
We install combi boilers from Worcester Bosch, Vaillant, Baxi, Ideal, Potterton, and Glow-worm. Each has strengths in terms of efficiency ratings, warranty length, and price. Our installers will recommend the best option for your home and budget.
From your first message to a working boiler — here's what to expect.
Answer a few short questions. Takes about two minutes. You can add photos of your boiler or any error codes showing.
We connect you with a Gas Safe registered installer in your area who can visit quickly and assess the job.
Your installer gives you a clear written price before anything starts. No surprises and no obligation to proceed.
Answers to the questions we hear most often.
Answer a few questions and we'll connect you with a Gas Safe installer in your area.
Gas Safe registered installers · Fixed-price quotes · No obligation