Surprisingly electric fireplaces are energy efficient and friendlier to your pocket. It is estimated that only 1% of the energy used is wasted which is convenient compared to traditional fireplaces. The units are designed to prevent energy from leaking out of the unit and dissipating with no use. If you are worried about high energy consumption, select a unit that has the display and heater functions separated. That way you can engage the display without the heater consuming additional power. Also look at you’re the cost of electricity in your area so as to know what to expect.