While radiant ceiling heaters are very energy efficient, they can be very expensive to operate. Electrical heat systems have a 100 percent energy efficiency rating because they convert all the energy to heat. Radiant ceiling heaters also eliminate heat loss by eliminating heat ducts.
It is possible to reduce energy costs with radiant ceiling heat by using zone heat. The occupants of the home set the thermostat in the comfort range in the rooms they are using and at a minimal level in rooms that are not in use. Radiant heaters warm based on line of sight. Oversized furniture between the room occupant and heating panel reduces the heat he receives.