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Ultimate₃ System Boiler

High efficiency ErP 94% A rated boiler

  • ErP A rated for efficiency - helping to reduce energy bills
  • Up to 10 years guarantee available*
  • £15 reward when registered through Club Energy
  • Available as 25kW model

The Ultimate₃ system boiler is suitable for homes with high hot water demands. The Ultimate₃ system is a sealed system that comes in a 25kW output and features flexible flue options and an aluminium heat exchanger for proven reliability and performance. The Ultimate3 also features a Grundfos modulating pump for reduced energy use and a modern bright LCD display with an easy to use interface.

*5 year guarantee available as standard. 10 year extended guarantee is only available for boilers registered through Club Energy with a Glow-worm Power Filter.

Specifications

Specifications

For full specification, please download here (2878 kB).

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MiGo

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  • Manage heating and hot water from anywhere
  • Reduces energy consumption, saves money

Climastat room thermostat (discontinued)

  • Easy to use
  • Extra low voltage
  • Simple & discreet 2 wire connection

Climapro₁ control (discontinued)

  • Annual service reminder function
  • Automatic update for summer and winter
  • Simple and discreet

Downloads

Alternative products

Alternative products

Ultimate₃ Combi Boiler

  • Leading combi boiler offering great performance
  • Up to 10 years guarantee available*
  • £15 reward when registered through Club Energy
  • Available in 30kW and 35kW models

Ultimate₃ Regular Boiler

  • ErP A rated for efficiency - to reduce energy bills
  • £15 reward when registered through Club Energy
  • Lightweight boiler with cupboard fit dimensions
  • Up to 10 years guarantee available*