We are so very happy with the new HP22. It was a replacement for the HP56 and we were leary at first to change over as our Hp 56 was working so well and heated the whole house even when temps were in low twenties high teens, we were 70 in the house. Yesterday our HP 56 bit the dirt just like Glen said it would. We were sad but only for a short time. My husband installed the new HP 22 and it fired right up and we are warm and cozy. Thank you Comfortbilt for being not only a A+ company and caring, truly caring for your customer but having the best customer service ever. Love this company.