Very Satisfied so far. Heats up fast, easy to regulate, and holds a fire really well. Still early in our first heating season but I can tell that we will heat our house much easier. My only concern is one or two loud cracks when the unit heats up. I ho

Very Satisfied so far. Heats up fast, easy to regulate, and holds a fire really well. Still early in our first heating season but I can tell that we will heat our house much easier. My only concern is one or two loud cracks when the unit heats up. I hope this does not lead to cracks in the firebox or heat exchanger due heat expansion. I rated very satisfied because I heard about firebox cracks in the first generation furnaces had but hope this issue is resolved with the redesign of the Tundra II.