Experts agree that the typical fireplace loses more heat than it generates, especially in cold climates. As smoke rises up thru the chimney, your heated air follows. Consider installing a fireplace insert which helps make better use of the heat.
When your fireplace is not in use, make sure the damper is set to the closed position. An open damper is like leaving a window open.
For a full evaluation of the efficiency of your home's heating system, call us at (870) 628-4900.