answer:Yep, if you have an electric starter on your thermostat like I do power outages will still leave you out in the cold. Biggest negative the cost of propane. This year has been outrageous up here in my rural mountain community, had a $700 and something fill, followed by $650ish, and my latest fill $404, all since late Jan. Summer I hardly use any fuel, cook little, cool showers, no heating costs and the rest of my house is electric, washer/dryer, etc. This tank should last me til Oct. I am hoping! If you are only using propane for backup it shouldn’t be too bad, but natural gas has sky rocketed and I have never had such an expensive fuel year. I am on the opposite side of the fence, buying a space heater and electric blanket this winter. lol