Heat Only Boilers
Glow-worm’s exceptional heat-only boilers (also known as ‘open-vent’ boilers) provide central heating and hot water via a winning combination of a boiler, a storage cylinder and water tanks. As well as providing ultra-efficient system and combi boiler solutions, Glow-worm also specialises in manufacturing award-winning heat-only boilers. Our online store offers a number of high-efficiency heat-only boilers, specifically designed to be durable and easy to use. *Note: All extended warranties stated are only available, when registered by a Club Energy installer.