Condensing Boiler

A high-efficiency gas or oil boiler that recovers heat from the flue gases by condensing water vapour from the exhaust, achieving efficiencies of 90%+. All new gas boilers installed in the UK since 2005 must be condensing. A white plastic condensate pipe that drains acidic water to a drain is a distinguishing feature; this pipe can freeze in cold weather, causing the boiler to lock out.