The timeless styling of the Classic Wood Stove comes in three sizes producing from 55,000 to 80,000 BTU of toasty warmth for a single living area or an entire home. Up to 77% efficiency means any room can be heated quickly. It also means your wood stove burns cleanly meeting the strictest air quality standards set by DEQ Washington Phase II Clean Air Standard of 4.5 grams/hr. or less.