No idea if it was turned up later, but on a medium setting the second night, I'd guess that Woody's model used 1 pound of propane per hour. I switched out tanks after the first night, guessing it was about half empty after the first night (no idea what setting it was on, but it ran at least 6 hours). Not sure of the heat output, didn't sit close enough to care, the ambiance of a fire beat the crap out of sitting around a lantern though!