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Sealed System Boilers For Heating and Hot Water

The system boiler (often listed as a ‘sealed system’) provides central heating and hot water via a storage cylinder. This means that, unlike with a regular boiler, there’s no need for separate water tanks in the loft of your house.

These models are a great choice for those who have limited space in their loft, or for those living with a large family who wish to use hot water from multiple sources at once.
Glow-worm’s system boilers do not require an expansion tank or feed, freeing up valuable space in your loft and meaning that we can offer a more efficient and cost-saving installation process.

*Note: All extended guarantees stated are only available when registered by a Club Energy installer

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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

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