I've got the thermostat turned down low now, we'll turn it back up before bedtime. Have adjusted my cycle timers down some for when I'm just idling during the day (now at 4 on, 13 off).
I've decided to leave the combustion blower run, during my earlier tests I noticed the stack temps really swung up and down with the cycling of the blower, at idle I could keep my hand on the pipe and it was lukewarm at most. I wonder that if I keep that blower on, the pipe will stay at a more consistent temp and draft more evenly through the warm spell, although I should mention that my liner goes up through a 24x24 inch fieldstone chimney that would probably pull a good draft over July 4th if I wanted (it drafted nicely this summer when we were dropping the liner down; I was standing inside it and the breeze felt good)
I'd still rather burn a bucket of coal
than a drop of $3.00+ oil
, can't answer for electric heat.