The Burley 9510 Westhay Panoramic Wood Burning Stove has a 10kW output with 80.2% of efficiency. It is designed to easily convert an inefficient and draughty open fireplace into a highly effective source of heat and centre piece for your home. Burley manufacture their stoves in Britain, and where possible all components as well as the steel being British steel. The majority of stoves draw their air from the room often through vents at the top and bottom of the door. Unfortunately, this also draws huge amounts of warm air from the room and losing it up the chimney. This is replaced by cold air from outside creeping in through windows and doors. Burley stoves, however, draw their air through a vent at the rear where it is cooler and therefore more efficient. To see the amazing flame effect please visit http://burley.co.uk/category/wood-burning-stoves/