... Fibre Heater, 6) Fan Heater, 7) Fireplace, 8) Gas Heater, 9) Halogen Heater, 10) Industry heater, 11) Infrared Heater, 12) Mica Heater, 13) Oil Filled Radiator, 14) Outdoor Heater ... , 15) Oil Free Radiator, 16) Panel Convector, 17) Quartz Heater ...