Is your stove not hot enough? Want to be more energy efficient? The Heat Wave Wood Stove Fan quietly and efficiently circulates warm air from your wood stove into your room. This fan will dramatically increase the effectiveness of your heating appliance and improve your comfort level. You can instantly gain up to 35% more efficiency from your wood stove with this amazing fan. Even more impressive is no electricity is required! The Heat Wave Fan is ideal for wood stoves and can circulate up to 300 cfm. Minimum operating surface temperature of 390 degrees F is required.