Boiler Types: Which is Right for Your Home?

Choosing a new boiler or upgrading an existing model can be confusing. There is such an extensive range of factors to take into consideration depending on the type of home you live in, the space you have available, your daily needs and your utilities. Here is our helpful guide to the most popular boiler types in the market, to help you decide which ones must be right for your home.


Combi boilers are by a long shot the most popular option in the UK, with studies having shown they currently operate in 70% of British homes.

They work by heating water which comes directly from the mains source whenever you turn on a tap or shower, working instantly without the stress and mess of installing a tank in your loft or attic space. They work with almost any fuel and have the added benefit of quick and straightforward installation.


A 24kW Combi boiler will comfortably run up to 10 radiators and supply hot water for one bathroom. Their increased efficiency is part of their appeal, requiring less kW’s when supplying smaller homes – making them best suited for apartments, flats, bungalows and small terraces. They can be utilised in more substantial homes but will be less economical. Some of the most reliable combi boilers are Worcester Bosch boilers.


Easily the most traditional form of heating in the UK the standard boiler possesses a loft based cold water storage tank as well as a hot water cylinder.

The boiler ignites its fuel, usually in the form of gas or oil. The heat exchanger warms up the water as a pump transfers the water to the hot water cylinder for use throughout the day.

A regular boiler with an output of 35-42kW, this kilowattage can run up to 20 radiators and supply three or more bathrooms, making it most suited to large semi-detached or detached homes.


The system boiler features a separate cylinder for storing hot water. The central heating and system components are built-in, but hot water is stored separately in the cylinder, allowing a constant supply of hot water to run to a large number of taps and showers simultaneously, an ideal choice for homes with multiple bathrooms.

A system boiler between 35-42kW (or bigger) is suited to larger detached homes with 2 or 3 bathrooms.

Back Boiler

A back boiler unit or BBU is small and compact, built-in behind your gas or electric fire to central heat your home and water supply.


They were present in many UK residences until 2005 when national Building Regulations were changed. If you have a pre-existing model fitted in your home, it may be a logical step to upgrade to a more environmentally friendly and economical boiler. It is known that BBU’s have 70% less efficiency, losing 70p for every £1 of burned gas, with another 30p disappearing up the chimney.

Seeking advice from a Gas Safe Registered fitter or company when switching to a new Combi, Standard or System boiler is recommended no matter what kind of home you have.

Which one is right for you?

You may now have a better idea about the ideal models to consider when getting quotes and searching for fitters in your area. Whatever your requirements, you can find the right boiler for you when you access the correct information on boiler innovation.

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