Fired the Hitzer (at last!)

A setting of 10 or more and I'd have to open the windows. It doesn't really matter what number, it'll still give you a range. For me 4 is when I don't need heat but want to keep on fire, 24 hour tending schedule. 5, gives me 250*. 6 about 350*. 7 1/2 Is about as far as I push it, 400*. I only use the fan if I underestimated the low temps and need a bump. 2800sf well insulated two levels including basement. I think I'm out at the max efficiency range for the hitzer if the temps ever go sub zero in nepa