For support call: 0330 100 3142
Find an Installer

Sealed System Boilers For Heating and Hot Water

High-Efficiency System Boilers from Glow-worm

If you have high demand for hot water from multiple sources at once in your home, or you have limited space in your loft, a Glow-worm system boiler will ensure that you’re never caught short.

What is a system boiler?

A system boiler provides central heating and hot water via a storage cylinder. They work like a regular, or conventional, boiler in that they store hot water at temperature ready for you to use. Unlike a regular boiler, they take their water supply from the mains so there’s no need for a separate water tank in your loft. This not only frees up valuable space in your loft, but also means that we can offer a more efficient and cost-saving installation process.

We are proud to offer a wide range of high-efficiency system boilers. As with all of our gas boilers, Glow-worm system boilers are fully compliant with ‘Benchmark’, the nationally recognised scheme which promotes the highest level of installation, commissioning, and servicing of heating and hot water systems. Our guarantees are also some of the best on the market with the Energy System Boiler having a 7-year guarantee out of the box.

To get started, select one of our system boilers below to learn more about the product and its suitability for your home. Need a little help? Don’t hesitate to contact us online, or give our friendly team a call on 0345 602 2922 and we’d be happy to answer any questions you might have.

*Please note: Our extended guarantees are available when installed and registered by a Club Energy installer. Find an installer near you today to take advantage of this offer.

1 - 5 of 5 Results

Quiet Mark Approved

Energy system boilers

ErP A rated compact system boiler

  • Compact size will fit perfectly in kitchen cupboards
  • ErP A rated for efficiency - helping you to reduce your energy bills
  • Quiet Mark approved*

Ultimate₃ System Boiler

High efficiency sealed system boiler from Glow-worm

  • Highly reliable system boiler offering outstanding performance
  • ErP A rated for efficiency – helping you to save money on your energy bills
  • FREE 5 year parts and labour guarantee*

Easicom₃ System Boilers

Quality, reliability, choice

  • FREE 3 year guarantee with option to extend*
  • ErP A rated for efficiency – helping to lower your energy bills
  • Manufactured right here in the UK by Glow-worm, the brand you can trust

Flexicom sx (Discontinued)

The Compact System Boiler from Glow-worm

  • High efficiency with a NOx class 5 rating
  • The only condensing system boiler with a direct flue
  • Could be fitted almost anywhere

Ultracom₂ sxi (Discontinued)

The Prime System Boiler from Glow-worm

  • No need for a cold water tank in your loft
  • LPG compatible without separate conversion kit
  • Sleek and attractively designed

1 - 5 of 5 Results