The usstove furnaces are American made my brother was looking at hot blast and clayton models, I called usstove and they told me all the furnaces are american made. Some of the stoves and pellets stoves are made over seas. As far as the blower goes I use my blower on low (600 cfm) with out the gas furnace blower I have a parallel installation. The wood furnace plenium ties directly into the main truck line not the gas furnace. I also have a return duct tied into the wood furnace. It was down in the low 20's last week the wood furnace heated the house great up in to the mid 70's with 3 out of 8 vents closed upstairs and 1 vent in the garage.