I'm thinking about exchanging my propane fireplace for a pellet insert. Trying to get a good starting point for figuring out if I can put a pellet insert in my desired location and if I can what special installation techniches I may need to use. I don't know much about zero clearance but I may need this in my situation(not sure why)?? I've got a "fake hearth/fireplace" built into the inside corner of our living room and the propane is direct exhausted out the wall at the level of the propane stove exhaust pipe. I'm wondering what "zero clearance" is and why I may or may not need this install. Also was wondering what pellet insert were considered the better ones. I'm looking to heat approximately 1400 sq. ft. and don't want to be messing with this instert as much as I tinker on my freestanding pellet stove in the basement.