The Glow-worm Easicom 3 25kW Heat Only Boiler is a compact, high-efficiency ErP A-rated boiler designed for traditional open-vent heating systems. Offering reliable performance from the trusted Vaillant Group, it delivers up to 25kW output with excellent seasonal efficiency of 94%. Featuring a lightweight aluminium heat exchanger and weighing just 22kg, it ensures easy installation while maintaining durability. Its unique rear flue option allows flexible placement in tight spaces such as airing cupboards and plant rooms. Compatible with Glow-worm’s full flue range and supporting up to 25m flue runs, it is ideal for a wide range of installations. With built-in frost protection, low NOx emissions, and a standard 5-year warranty, the Easicom 3 provides exceptional value for money in domestic heating.