I have a 60k btu infrared hanging heater in my shop, I use a 250 gallon tank(bought used for a C-note,1961 model), fill it once a year before October when the price skyrockets. Cost $137 this year to fill(most ever). A 100 lb bottle only has a few gallons of fuel. I see my buddy toting 100lb bottles to & fro every week all winter, spending $35+ a week. Brian
