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System Boilers header 1

System boilers

If you’re after a system boiler that’s simple to use and sits discreetly in a cupboard or loft space, you’re in the right place. Gas system boilers from Ideal power your home’s central heating and use a cylinder to store hot water. Our system boilers are compact, meaning they run effectively while being out of sight.

Fully pressurised and filled via a mains cold water connection, Ideal system boilers have a heat pump inside the boiler. This circulates hot water to radiators to provide the warmth and comfort your home needs.

View all our system boilers below and use our boiler finding tool to help you choose the right model for your home.

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  • New system boiler information

    Are you looking for advice on the right gas system boiler for your home? Our Customer Service team is happy to help. Call us on 01482 498 660 or find your nearest system boiler installer using our tool: Find your installer.

    Contact us

    System boiler user guides by Ideal Heating

    If you’ve just had a new system boiler installed or you’re after help with your existing Ideal boiler, use our user guides to find the information you need to make sure it’s running as it should.

    User guides for system boilers

    New system boiler warranty

    And for details of your Ideal system boiler’s warranty, please read: Ideal Heating Warranty Terms and Conditions. Remember, you must register a warranty within the first 30-days of your boiler being installed. It’s quick and easy to do online - just click the button below!

    Register a warranty

    System boiler FAQs

    We’ve got all the answers you need about system boilers, from how they work to how much they cost to run.

    • Does a system boiler have a hot water tank?

      System boilers use a hot water tank (also known as a ‘hot water cylinder’ or ‘hot water storage tank’) to hold hot water. This means the hot water is always ready for use, no matter when you need it. Water is heated inside this water cylinder to provide heating and hot water to your home.

      Find your new system boiler

      View all boiler cylinders

    • How can I book a system boiler installation?

      To book your Ideal system boiler installation, call our Customer Service team on 01482 498 660 or use our location finder to see all installers near to you. 

      Contact us to book an installation

      Find an installer

    • Are gas system boilers expensive to run?

      The cost of running a gas system boiler depends on how much hot water you use. If you use hot water more regularly then most, then a system boiler may be more cost-effective than a combi boiler, because the hot water is readily available in a storage tank.

      The difference between combi, heat only & system boilers

    • How do system boilers work?

      Gas-powered system boilers work by a flame heating up water in a hot water system that’s enclosed. The hot water gets pumped around the hot water cylinder, where it warms up the water inside. It’s also pumped around the radiators to provide heat. 

      Learn more about how system boilers work by looking at our tips and advice article: What is a system boiler? 

    • What size system boiler do I need?

      The right size system boiler for your home depends on different factors, from the size of your property to the suitability of the boiler for your central heating system. Ideal Heating is a trusted supplier of gas-powered system boilers and our Customer Service team is here to advise you on the right size boiler for your home. 

      Contact us or use our boiler size guide to work out the best system boiler model for you.

    • Should I choose a system boiler or combi boiler?

      System boiler VS combi boiler is something we’re often asked about, and it really depends on your heating and hot water needs, as well as the type of property you call ‘home’. 

      Gas system boilers heat water in a hot water system which is then pumped to radiators and the hot water cylinder to heat water and provide warmth. 

      On the other hand, combi boilers take water directly from the mains. Only as and when you need it does the boiler heat the water, burning gas to do so. 

      Explore the advantages of a combi boiler or contact us for more advice about which boiler is best for you.

    Support for installers

    Have a question about installing one of our gas system boilers? We’re here to help.

    Contact us

    Gas system boiler user guides by Ideal Heating

    Our user guides for system boilers have all the supporting information you need to get an Ideal system boiler up and running.

    New build system boiler support

    For advice on selecting and/or installing the right system boiler for a new build, please contact us.

    Gas system boiler user guides by Ideal Heating

    Our user guides for system boilers have all the supporting information you need to get an Ideal system boiler up and running.

    Support for gas system boilers

    Have a question or would like more details on  one of our gas system boilers? We’re here to help.

    Contact us

    Gas system boiler user guides by Ideal Heating

    Our user guides for system boilers have all the supporting information you need to get an Ideal system boiler up and running.