The comfortbuiltHP22i insert works great at heating my house and efficiency and looks good . But my problem is how the settings work I can have it on eco, manual , temp and the stove will not turn on till at leat 4 degrees above where and then when it goes on sometimes it don't go off (it was on Temp, I had it set for 70 and it was still running at 90 degrees so I had to tun it off). I called tech and they tried to be helpful by changing the settings in the stove. I called 3 times and changed them everytime but still had the problem, so I was told by the tech that if I had a thermostat it would be more accurate, so I did. It does work better but had it go 5 degrees above set before it went off. not sure why it works like it does but somethings not right. I have another brand stove in the basement that goes on 1 degree obove temp and goes off after it has reached the temp.