Fireplace energy efficiency depends on the type of fireplace and how it is installed and operated. Before treating it as a way to heat your home, understand where the heat goes and how to use it safely.
Understand where the heat goes
An open wood fireplace can send heated indoor air up the chimney. How much warmth you feel near the fire tells you little about what happens in the rest of the house. A qualified professional can assess whether your fireplace or an alternative is suitable for the way you use it.
Use the damper as designed
Follow the manufacturer’s or installer’s instructions. For a wood fireplace, keep the damper open while there is a fire or hot embers. When everything is fully out and cool, closing the damper may reduce drafts if your system is designed for that. Gas fireplace designs differ, so check with a qualified technician before changing anything.
Inspect before the heating season
Arrange regular inspection and cleaning as advised, use the recommended fuel, and maintain smoke and carbon monoxide alarms according to their instructions. Ask a professional to inspect any smoke spillage, unusual odor or damaged chimney before further use.
For more detail, see the U.S. Department of Energy’s energy-saving guidance. Also see Energy Conservation Tips for another part of this series.