[cercis]

But, it should be noted, it was only 3F and it was in the furtherest room. Which really isn't that much of a drop. So, if you close off those rooms and use the fireplace and then heat them later, you can probably save a lot.

I know that my family used the fireplace a lot and we only had the heaters on to go to bed, and then turned on about 1 hour before shower/bath time and turned way down to sleep. Dad would turn it up when he got up and Mom would turn it down to about 55 when she left for work. We didn't touch it, but built a fire when we got home from school.

I don't know how much they saved, but the heat rarely kicked on from 55 (it had to be really, really cold outside for the thermostat to register colder than 55 - it was in a different part of the house from the fireplace).