The ComfortBilt HP22 is one of the most powerful and cleanest burning pellet stoves sold in North America today. It has 5 heat levels that can be adjusted manually or by programmable thermostat, and a quiet high CFM convection blower to make sure that all the heat the stove makes is delivered into your home. With its powerful exhaust fan pulling clean air through the combustion chamber, the HP22 has a certified efficiency of 80.5%, which means you'll get maximum heating from every bag of pellets you buy. Every ComfortBilt pellet stove comes with a full year warranty on all parts. With its modern bay view window, high heating efficiency, and the obvious quality of its engineering and construction, the ComfortBilt HP22 is a pellet stove you will feel proud to own year after year. Material: Steel.