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What Size Boiler Do I Need?

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With hundreds of boilers on the market, it can be difficult knowing which size boiler is suitable for your home. When it comes to buying a new boiler for your home, you need to know what size also known as output is right for your home. The size of your boiler depends on the size of your house and your usage habits.

Buying a boiler which is the right size for your home means you will enjoy a warm home without any additional running costs. In this article, we highlight which size boiler is right for your home?

So, what size boiler do I need?

Apartment/Small House – If you live in an apartment or small house with 1-2 bedrooms, 1 bathroom and approximately 10 radiators, then you will need a boiler with the output between 24-27kW.

Medium House – If you live in a medium sized house with 3-4 bedrooms, 1-2 bathrooms and approximately 15 radiators, then you will need a boiler with an output between 28-34 kW.

Large House – If you live in a large house with 4 or more bedrooms, more than 2 bathrooms and approximately more than 20 radiators then you will require a boiler with an output between 35-42kW.

*Please note, this is just a general guide to give you an idea of the boiler output you may need. Before buying a replacement boiler, we recommend contacting us and speaking to one of our Gas Safe Heating Engineers for advice on what size boiler is suitable for your home.

Why does the boiler size matter?

It is important you choose the correct sized boiler for your home to meet your heating requirements. If you buy a boiler which is too small for your home, then you won’t be able to produce enough hot water and space heating for your property. However, if your boiler is too big, then you will be wasting energy and cost.