propane is a shitty market some times, I live in the sticks so no natural gas hook ups. propane is about $1.50 gal delivered right now I've see it over $5 with a rented tank which costs about $50 year, or u can buy a tank for around a $1000, and shop for your propane. my house has a propane furnace, don't use it much, old farm house redone about 10 years ago leaks a little here and there, couldn't afford spray foam back then and went with standard fiberglass, but went thru with small cans of spray foam to find as many gaps as possible. cost me 3200 a year to heat my home for the winter, bought a wood pellet burner cost me about $700 a year and wood heat is so nice, does require daily fill-ups. still have a big propane tank for stove, hot water and barn.