The US Stove TH-100 is an one-of-a kind space saving wood stove that efficiently heats up to 750 sq. ft. The TH-100 would be ideal in smaller homes or zone heating situations and can burn up to 8 hours. The firebox accepts logs up to 11 in size with an output of 26,000 BTUs. This combination of modern styling, and outstanding heat output, and convenience provides a great solution to your smaller heating needs. The TH-100 stove exceeds 75% efficiency and qualifies for the 30% IRS 25C Residential Energy Tax Credit.