I am not very happy with the comfort built HP 22 that I just purchased. Upon receiving the pellet stove, I unpacked the control module found inside the Pellet hopper, and it was very sketched up. Also the pipe connected to the vacuum hose inside of the left front door was cracked into. I called comfort built and they sent out a new pipe and a control module housing. No instructions were included, so I need to figure out how to swap out the internal guts of the control module into the new module housing. Two weeks later the fan motor started making a very loud rattling noise. We have the pellet stove in our basement and I can hear it running upstairs.