Warm up your room 31% faster with the mid-size Ecofan(TM) fan. Ideal for rooms up to 240 sq.ft. The ultrair circulates more warm air further into your room. Tested and proven to save you up to 14% in fuel with more efficient distribution of heat from your wood stove. No electricity needed, the Ecofan generates its own power by converting heat from the stove into electricity. Designed and manufactured in Canada for over 20 years. This product is covered by a 2-year warranty.