Are electric fireplaces really energy efficient?

Electric resistance heating is considered 100% energy efficient. By contrast, gas fireplaces are in the mid 70% to low 80% range, and wood-burning equipment is in the low to upper 70% range. All the incoming electric energy used in an electric fireplace is turned into heat. Since there is no venting or chimney needed with an electric fireplace, there is no heat lost through a pipe.