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.
ErP A rated for efficiency – helping you to reduce your energy bills
FREE 10 year guarantee
Manufactured in the UK at Glow-worm’s industry-leading facilities
Lightweight boiler with cupboard fit dimensions
Modern, bright, LCD display with easy-to-use interface
