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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*
  • Available in a 25kW model

The Ultimate₃ System boiler provides outstanding heating performance in a 25kW model, and is suitable for homes with high hot water demands (when combined with a hot water storage cylinder).

Built with an automotive grade, aluminium, heat exchanger, the Ultimate₃ is designed to offer high performance. Its Grundfos modulating pump reduces energy usage, meaning the boiler is A rated when it comes to efficiency.

The boiler features a modern, bright, LCD display with an easy-to-use interface, and is also compatible with Glow-worm’s popular MiGo app based control (sold separately) – meaning you can control your heating and hot water from anywhere at anytime by simply using your mobile phone or tablet.

The Ultimate₃ also comes prepared with a free 5 year parts and labour guarantee when your Gas Safe registered installer registers the installation on the Glow-worm Club Energy installer loyalty programme.

Features & benefits

  • Superior performance system boiler available in a 25kW model
  • Modern, bright, LCD display with an easy-to-use interface
  • High quality, automotive grade, aluminium heat exchanger providing excellent performance
  • ErP A rated for efficiency - helping you to reduce your energy bills
  • Grundfos modulating pump for reduced energy use
  • Inbuilt filling loop for straightforward maintenance
  • Compatible with full range of Glow-worm controls, flues and accessories
  • Ideal for use with innovative MiGo app based control
  • Free 5 years parts and labour guarantee*
  • Wide range of flue options available
  • Wide range of Glow-worm accessories available

*with option to extend when registered through Club Energy

Specifications

Specifications

Ultimate₃ system boiler25kW
Boiler dimensions (H x W x D mm)740 x 418 x 300
Maximum horizontal flue length 60/100 (m)10
Maximum vertical flue length 60/100(m)10
PCDB seasonal efficiency (%)89.7
ErP ratingA

Related Products

Related Products

MiGo personal heating assistant

Your personal heating assistant

  • Remote heating and hot water control
  • Automatically learns your energy needs
  • MiGo and Glow-worm boilers speak the same language
  • Internet weather compensation
  • Full cost-saving potential

Climapro₁ control

Available wireless and wired

  • Annual service reminder function
  • Automatic update for summer and winter
  • Simple and discreet
  • Weather compensation ability (when used with optional outdoor sensor)

Climapro₂ RF control

Glow-worm’s most innovative wireless programmable room thermostat

  • Simple-to-use handheld unit can be wall mounted or portable within the living area
  • Backlit display provides advanced user control and functionality
  • Two channel wireless programmable room thermostat
  • Central heating control system to suit your timetable and lifestyle

Climastat

Thermostat by Glow-worm

  • Easy to use
  • Extra low voltage
  • Simple & discreet 2 wire connection
  • Polarity not important

Downloads

Downloads

Alternative products

Alternative products

Ultimate₃ combi boilers

High efficiency combi boiler from Glow-worm

  • Leading combi boiler offering outstanding performance
  • ErP A rated for efficiency – helping you to reduce your energy bills
  • FREE 10 year parts and labour guarantee*
  • Extended guarantee options available
  • Our 30kW and 35kW models suit homes of all sizes

Ultimate₃ regular (open vent) boiler

High efficiency regular boiler from Glow-worm

  • High performance, ErP A rated regular boiler
  • Lightweight boiler with cupboard fit dimensions
  • FREE 5 year guarantee*