which type of heat transfer which type of heater is cheapest to run which type of heat transfer requires touch which type of heat transfer creates wind which type of heat source is the cleanest which type of heater is best which type of heating causes sunburn which type of heater heats water on demand which type of heat transfer is from the sun which type of heat transfer creates currents which type of heat transfer is boiling water plate type heat exchanger which type of radiation heats the atmosphere which type of room heater is good for health all new water heaters are of which type recall which type of emr is felt as heat