I've not had to use my inverter, but I could always hook up the inverter and battery from my boat in the event of a power outage that actually Jared more than a few seconds. That said, I'm not certain if I get longer wood burns with the blower on low, vs higher speed. I think I actually get more heat spread throughout the house with the blower on high vs lower settle in the rheostat. I definitely can say that any amount of blower setting makes a big difference with our insert, even though it's not a flush insert.
