[Ima saver]

I would not buy the tank. You can rent for less than $40 a year usually and it takes a long time to pay for the tank. (we got ours half price, but that's another story.) I figured out how many gallons I had put in two months ago (480 gallons) and how much we have left (400 gallons) The price was about $2 a gallon , so using 80 gallons x $2= $160 used to heat the house for 60 days. That comes to $2.66 a day, but I keep it 60 in here.