I've been reading some posts talking about figuring out the cost of a pellet stove over three or four years. My Harman P68 is in its' third heating season, and running well. Haven't used the oil heat at all. Other than the cover on the burn pot, which is a wear item anyway, what would wear out to the point that you'd get another stove? A couple blower motors, a sensor, a switch, a control board. None of them come close to the price of a new stove. I'd planned on many years of operation. Any reason I shouldn't ? Oh, and I'm in Southern Maine, and the thing runs from October through til March or April, mostly 24x7.