The clarity 20 boiler stove gives a huge 76kw of heat to the room its used in and is also able to power up to 12 radiators around the home burn wood anthracite or other smokeless fuels on this clean burning boiler stove and say goodbye to big gas billsthe ekol clarity 20 boiler stove is one of the few boiler stoves to attain defra approval for use in smoke control areas ekols advanced combustion research facility has optimised every part of the clarity 20 design to incorporate advanced cl