Our best-selling stove, the ComfortBilt HP22 Black is popular because of its modern appearance, large bay view window, programmable 7 day internal thermostat, and powerful heat output. Its superior engineering and reliability have earned our flagship model consistently great reviews from customers all across the country. Certified 50,000 BTU output will heat a 2,800 ft² or more if temperatures are mild EPA and CSA certified to comply with all federal emissions mandates Heat exchanger design and powerful room blower produce maximum heat from pellets 55 pound hopper capacity; ashes fall automatically into a large removable ash pan Five power settings allow up to 20 hours of continuous burning on lowest setting Programmable thermostat allows constant temperature and economical pellet use Rear mounted 3” standard exhaust port and 2” standard air intake