OK, here is my problem. I own a manufactured home that has a fireplace in it. I am trying to research my alternative heating options so that I can get away from my high propane bill. The wife and I were seriously considering putting a wood stove insert into our fireplace but I found out today that my opening is way to small to go this route (17" H, 36" W & 15.5"D). My question is what are my other options for alternative heating for my home?