Wood. I burn about a cord and a half of mixed oak and mesquite. My fireplaces are rumford boxed adobe beehives, with outside air intakes. We only light fires at night. It's in the 50's here daytimes, down to 18-25 at night. The house has never gotten colder than 58 degrees inside on it's own as long as I've been keeping count, and that was many years ago when we had a rare -5 degree morning. We'd had no fires the night before as we'd been out late and went straight to bed. It was still 58 inside. Put on a sweater and make the coffee....

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You're a daisy if you do.
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