The Glow-worm Energy heat only boiler with horizontal flue pack, 18 kW, is a high-efficiency and high-quality boiler with a wide range of hot water storage cylinders and features a super quiet heat exchanger made from automotive grade aluminium that is designed to last a lot longer than the typical copper or alloy heat exchangers while reducing energy bills.

• Grundfos ErP modulating pump with high efficiency
• The compact size will fit in kitchen cupboards
• Liquid-crystal display modern and bright
• Rear-flue option
• ErP A rated with an online energy labelling tool
• Compatible with current glow-worm flues
• Supported by club energy
• 7 years guarantee increases to 10 years warranty when installed and registered with a filter on club energy