The wood-burning stoves has the traditional feel of an open fire but is more energy efficient comparing to an open fire.  A contemporary Heat Design wood stoves or fire attains an average output of between 60 and 80%. In addition, the emissions from an open fire as opposed to a good wood stove are many times higher. When both are used to heat a room, the open fire appears to have 15x higher CO emissions than the wood stove, and 50 x more particulate emissions than the wood stove.