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Which Type of Boiler Is Best For Me?

Which Type of Boiler Is Best For Me? In the United Kingdom, the central heating system is an essential component of every household. One critical element in this system is the boiler, which generates heat to warm up your home and provide hot water. Choosing the right boiler for your home can be a daunting task, given the different types available. In this article, we will walk you through the most common types of boilers in the UK, outlining the benefits and drawbacks of each to help you make an informed decision.

Which Type of Boiler Is Best For Me?

1. Combi (Combination) Boilers

Benefits: Combination or 'Combi' boilers are the most common type of boiler in the UK. They provide hot water and heating directly from the boiler itself, meaning there's no need for a separate hot water cylinder or cold water storage tank. This makes combi boilers a compact and convenient choice for smaller homes or flats with limited space. They're also quite efficient, as water is heated instantly rather than being stored.

Drawbacks: The downside of a combi boiler is that it may struggle to provide hot water to multiple outlets simultaneously. So, if you have multiple bathrooms or if several hot water taps are often used at once, a combi boiler might not be the best choice. 

2. System Boilers

Benefits: A system boiler heats your central heating system directly and produces hot water for a storage cylinder. Unlike combi boilers, they can deliver hot water to multiple taps at the same time, making them a good choice for larger homes with more than one bathroom. As most of their major components are built into the boiler, they are easier and quicker to install than conventional boilers.

Drawbacks: The main drawback is the need for a hot water cylinder, which requires additional space. Also, once the hot water stored in the cylinder runs out, you'll have to wait for it to refill and reheat.

3. Conventional (Regular, Traditional, or Heat Only) Boilers

Benefits: Conventional boilers, also known as regular, traditional, or heat only boilers, use a storage tank to hold cold water and a hot water cylinder. They're good for large households where multiple people might need hot water simultaneously and are also suitable for homes with low water pressure. These boilers can be a good fit for older homes, which often already have the necessary infrastructure in place.

Drawbacks: Conventional boilers take up more space due to the need for a cold water tank and a hot water cylinder. The hot water can run out and take some time to refill and heat again. They are also more complex to install than system or combi boilers, which can increase installation costs.

4. Condensing Boilers

Benefits: All modern boilers in the UK are condensing boilers, whether they're combi, system or conventional boilers. These boilers are designed to capture some of the heat that would otherwise escape from the flue and use it to heat water. This makes them highly efficient, reducing your energy bills and your carbon footprint.

Drawbacks: The main disadvantage of condensing boilers is the upfront cost, as they are typically more expensive to purchase than non-condensing boilers. However, their high energy efficiency means you can recoup this additional expense over time through lower energy bills.


Each type of boiler comes with its own advantages and disadvantages. When deciding which one to choose, consider your household's size, your hot water demands, your budget, and your available space. AF Bathroom and Heating can offer you advice and help in assessing your needs and guide you towards the best option for your home. Remember, the right boiler can ensure comfort, efficiency, and savings in the long run. Contact us today to discuss further what you're looking for.


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