Quote:
Originally Posted by mvivanco
I had my HVAC orientation yesterday. The service guy told me the Aux Heat comes on when its cold outside and there is frost on the unit outside. It puts the Aux heat on to defrost the coils. It is an electric heat source and not as efficient so it isn't really intended to be used or long term heating of your home.
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I don't think you understood the technician. The auxiliary heat coil is an electric coil that is location in the inside unit, not the outside unit. It is designed to provide supplemental heat for your house when the heat pump reverse cycle does not keep up with the thermostat setting. Any heating coil located in the outside unit would not be able to provide any heat to your house because all of the supply air comes from the inside fan unit. I am not familiar with a coil designed to remove frost from the outside unit. I have never seen one.