Sealed System Boilers - Unvented

The system boiler sometimes known as a “sealed system” provides central heating and hot water via a storage cylinder housed in an airing cupboard - no need for water tanks in the loft, as with a regular heat only boiler.

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Energy System Boiler

ErP A rated system boiler

  • High quality aluminium heat exchanger
  • FREE up to 10 years guarantee available*
  • Compact size – fits perfectly in kitchen cupboards

Ultimate₃ System Boiler

High efficiency ErP 94% A rated boiler

  • ErP A rated for efficiency - helping to reduce energy bills
  • FREE up to 10 years guarantee available*
  • £15 reward when registered through Club Energy

Easicom₃ System Boiler

Quality and reliable system boiler with 3 years guarantee*

  • Available in 25kW output model
  • Bright, LCD display with easy-to-use interface
  • Leading system boiler offering great performance

Flexicom sx – (Discontinued)

The compact boiler that fits in a cupboard

  • 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)

Ideal for households with high hot water consumption

  • Designed with hassle free installation in mind
  • Spacious internal design
  • Easy access to all components

1 - 5 of 5 Results