Description 35,000 BTUs and 89.5% thermal efficiency plus a variable speed blower to distribute the heat means this stove will heat up to 1,500 square feet of living space 60 pounds of hopper capacity to provide continuous heat for up to 40 hours between fuel loads Automatic ignition and intuitive dial control for easy, comfortable heat Uses 3" or 4" pellet venting Mobile home approved with included fresh air intake Certified to burn clean. Burns wood pellets for C02 neutral and environmentally responsible heating Designed & Assembled in the USA