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Which boiler is best for my 2 bedroom house?

If you’re looking for a new boiler for your 2-bedroom home, this guide should provide you with all the information you need to make a suitable choice for your heating needs.

Choosing a boiler that is an appropriate size for your household is a very important task. The wrong system could either leave you short of the heating and hot-water that you require or alternatively, it could cause your energy bills to get unreasonably high.

It’s our goal at HomeServe, to help ensure that your heating system is able to meet your central heating needs both effectively and efficiently. Take our advice and you could achieve optimum comfort levels in your home year-round.


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Choosing the best boiler for a 2 bedroom house


Figuring out what size boiler your home needs can often seem difficult. But don’t worry, the expert team at HomeServe are here to provide you with the help you need.


What size boiler is best and why kW output is important


The key factor that you’ll need to consider when making a decision about boiler size is the kW output that your home is likely to require. This can be described as a measure of a boiler’s ability to deal with your hot-water and heating demands. Generally, the higher the kW output a system has, the more it is able to deal with higher central heating demands.

When thinking about the kW output needed for your specific needs, it’s usually recommended for you to consider the number of bathrooms present in your home, along with the number of radiators and the rate at which heating and hot-water is likely to be used by the people in your home.

The kW output needed for your household will also depend on the type of boiler you choose.


There are 3 main boiler types:


The kW outputs for these boiler types are measured differently, so the boiler size required for your home will depend on the type of system you choose. Below we provide more information on these boiler types along with estimated guides of their kW output ranges.


Combi boilers

Designed to be energy-efficient sources of central heating, these systems provide both hot-water and heating all through one compact system. A combi boiler is a great space-saving unit, as no additional tanks or cylinders are required.  You can find out more about combi boilers by visiting our combi boilers page.


As a boiler sizing rule of thumb, we’ve provided you with an estimated guide of kW outputs for combi boilers below.

24-27kW 1-2 bedroom, 10 radiators, 1 bathroom
28-34kW 3-4 bedroom, 15 radiators, 1-2 bathroom
35-42kW 4+ bedroom, 20 radiators, 2+ bathroom

Conventional boilers

Conventional boilers (also known as regular boilers) are designed to provide effective central heating through the use of an additional hot-water cylinder and cold-water tank. These boilers store your hot-water and could deliver hot-water to multiple taps at once. You can find out more about this boiler type by visiting our conventional boilers page.

System boilers

System boilers are manufactured to provide both hot-water and heating without the use of a water storage tank. Like conventional systems, these boilers store hot-water in a cylinder and can therefore provide a supply to multiple taps at once. Find out more about this type of boiler by visiting our system boiler page.


To help you choose a suitable conventional or system boiler for your 2-bed home, we’ve provided the below estimated guide as a boiler sizing rule of thumb.

12-15kW 1-3 bedrooms, 1 bathroom
18-24kW 3-4 bedrooms, 1-2 bathroom
30kW+ 4+ bedrooms, 2+ bathroom

Why not try our free online quote tool?


If you’d like to get a personalised recommendation for a boiler that could suit your central heating needs, try our free online quote tool today. All you have to do is answer a few simple questions about your property and your heating demands, and within a few moments you could receive your free quote. Why not give it a try?


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A range of options for your new boiler 


You should now have a clearer idea of the size of boiler you should need for your 2-bed home, so now you can think about which boiler model could be best. There are quite a few boiler models available on the market, so we understand that it can be difficult to select a suitable option for your household. However, not to worry, our expert team have the skills and industry expertise to help you make the right choice.

At HomeServe, we install a range of different boilers from some of the leading brands in the industry. From combi boilers to system and regular boilers, we supply a diverse range of heating systems to help us cater to all types of properties.

We also aim to provide our customers with access to flexible finance options in order to help make paying for your new heating system as simple as possible*. Take a look at our Access to finance page to find out more.


To help you choose a suitable boiler system for your home, we’ve outlined our top choices of boilers for 2-bed homes:


  1. Ideal Logic Combi C24
  2. Ideal Logic Combi C30
  3. Worcester Bosch Greenstar Combi 25i
  4. Worcester Bosch Greenstar Combi 30i
  5. Worcester Bosch Greenstar Life Combi 30kW
  6. Worcester Bosch Greenstar Style Combi 30kW
  7. Ideal Logic Heat 12kW Heat Only
  8. Ideal Logic Heat 15kW Heat Only
  9. Intergas Xclusive 24kW Combi
  10. Intergas Xclusive 30kW Combi


Boiler warranties


All of the boilers that we install come with up to 10-years manufacturer-backed warranty. This is to provide you with peace of mind in knowing that should you face a breakdown or fault within the boiler’s warranty period, you could receive a replacement or repair at no added cost**. Get in touch with us today to find out more.


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Is your home a different size? Check out our similar guides:


Recommended boiler sizes are estimates only and should are not a substitute for expert engineer advice.

*Credit is subject to status, affordability assessment and credit checks. Interest-free credit is available over 2 years on all boiler makes. Credit is also available across 36-120 months at 9.9% APR. Finance can be taken out with or without deposit and capital payments can be made at any time to reduce your loan.

**Subject to an annual service at the customer's expense. Warranty extension from 5-years to 7-years or 10-years only available on Worcester Bosch. Warranty extension from 5-years to 10-years available on Ideal Boilers. All warranty extensions subject to an additional charge.


Information and other materials on this website are not intended to constitute professional advice and should not be relied upon. Please see our Terms of Use for further details.

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