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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*

High performance

The Ultimate₃ regular boiler provides outstanding heating performance in a 25kW model, and is best suited to homes with high hot water demands, where a hot water storage cylinder and a cold water tank are already installed.

Being both lightweight and very compact, the Ultimate₃ regular boiler can easily be installed within a kitchen cupboard if required.

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 regular (open vent) boiler available in a 25kW model
  • Modern, bright, LCD display with easy-to-use interface
  • Kitchen cupboard fit dimensions
  • High quality automotive grade aluminium heat exchanger providing excellent performance
  • Highly efficient, A rated boiler for ErP energy labelling to reduce energy bills
  • Ideal for use with innovative MiGo app based control - when used in conjunction with the appropriate system pack
  • 5 years parts and labour guarantee*
  • Wide range of Glow-worm flues and accessories available

*when registered through Club Energy

Specifications

Specifications

Ultimate₃, Regular Boiler25kW
Boiler dimensions (H x W x D mm)600 x 375 x 280
Maximum horizontal flue length 60/100 (m)10
Maximum vertical flue length 60/100 (m)10
PCDB seasonal efficiency (%)89.6
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 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