I'm feeling pretty good about my Harman SF160 boiler right now. My 1st. and 2nd floors are holding easy at 70* which is where the wife likes it. I keep my office/man-cave at about 75* which is where i like it.
Boiler is keeping water at 170 to 180*
Stack temp. is around 125 to 150 *
Draft holds at .05
Baro pretty much stays wide open at these cold temps.
Its somewhere around 15* right now. Just finished snowblowing the driveway, it feels really good having the wind blow the snow back in your face.
i'm feeling like an old pro keeping the boiler stoked up. It just gets easier and easier. Love this coal heat!!!
Have a good day guys