we did a run down the road for school clothes for the girls and stopped in at the Tractor Supply Company store to pick up dog food and happened to walk by some of these......specifically the 1557M, supposed to heat up to a 2,500 square foot house(ours is 1,900) and if im figuring right it should be fairly straight forward to connect it to our current central air.....our central air heating is natural gas......we have been debating on putting in a wood stove or similar for awhile and im wondering if anyone has any experience........if my memory serves me right on my gas bill last winter and figuring it will prolly cost about as much as the stove is gonna cost in installing it(price on the stove was $1,100), it would prolly pay for itself in a couple years.......