Auxiliary heating, often designated by a specific setting on a thermostat, provides a supplemental heat source when the primary heating system, typically a heat pump, cannot adequately warm a space. This setting activates electric resistance heating coils to generate heat directly, offering a more immediate solution for raising the indoor temperature.
The value of this feature lies in its capacity to maintain comfort during periods of extreme cold or when the primary heating source malfunctions. While it offers rapid warming, it’s important to note that relying on this function for extended periods can significantly increase energy consumption due to the nature of electrical resistance heating.