I have been looking at wood furnaces to put in my basement and heat the basement, upstairs manufactured home and addition. When I built the addition, I had a new upflow lp furnace installed in the basement and heat /cold air runs to the addition. They also added cold air returns for the upstairs mfg home. The main floor heat runs are still the original foil backed fiberglass mat rectangular heat runs -not sheet metal. Issue #1 - all wood furnaces seem to have "not approved for use in mobile/mfg home". Why? Issue #2 - I wanted to add the wood furnace in the basement at one end (below bedrooms) due to chimney location and wood supply. This isn't very close to the lp furnace ~35ft away. Can I just connect the hot air ducts from the wood furnace to the ends of the original upstairs heat runs, connect into the cold air return end above the wood furnace and use the wood furnace blowers? I assume this would put the majority of the heat into the bedrooms where I want it since I have a pellet stove in my addition and a fireplace on the opposite end of the house. THe bedrooms are the coldest part now with running the pellet stove. Question #3 - with the wood furnace being tied to the heat run and the cold air return, is there any issue with creating a heat duct loop through the wood furnace if the lp furnace kicks on? Question #4 - with the hot air ducts blowing upstairs, does the wood furnace radiate enough heat for a large basement . Thank you very much!