Zuki,

I'm heating 1,500 square feet of basement using a ventless, propane fired, gas log stove. It works great, costs about $30 a month to run during the winter months (October through April), and the stove cost me $895 installed. My Grandpa Bear wood stove was a lot better, cheaper to use, but at my age splitting two cords of firewood every year is no longer an option. The vent-free propane stove is 100-percent efficient, which means none of the heat goes up a chimney. And, they are very safe to use.

Good Luck,

Gary