Bought a 90 BTU Keystoker 3 years ago and it never worked right steve was unwilling to do anything about it. it was a leftover floor model and last winter the fire backed up into the hopper filled the whole house with co,we got real bad headaches and evacuated the house with all windows open. I called Keystoker and mind you its out of warranty they told me to bring the stove to them and they would swap it out for a brand new unit. I suspect the grates had been out of it and they never got cemented in properly, being a floor model I'm sure parts were borrowed and replaced later. conesus did nothing , Keystoker stood behind it 110% read more