I have a friend who is new to wood burning. He was told to burn his stove at 500 to 600 that is alot higher than I burn 300 to 400. He was also told to burn at 1000 for 2 hours to keep the chimney clean. My stove heats very well at 300 and no build up in the chimney. I am afraid he will burn out his stove or his house.