Fan kits are a nice accessory to have for a fireplace, as they help to improve heat distribution. The whisper-quiet fans are controlled via thermostat. A rheostat gives you the opportunity to adjust the amount of heat distribution as well as the noise level of the fan. You should really consider a fan kit if you are considering putting a TV or other electronic device above your fireplace. Fan kits keep the wall above the fireplace cool, which will help to keep electronics on the same wall from overheating.