Supplemental heating in a heat pump system provides additional warmth when the heat pump itself cannot meet the thermostat’s demand. This typically occurs during periods of extremely cold outdoor temperatures when the heat pump’s efficiency decreases, and the heating requirements of the building increase. For example, if a home is set to 70F, and the heat pump can only maintain 65F due to freezing outside conditions, this supplementary system activates to bridge the gap and reach the desired temperature.
The integration of supplementary heating ensures consistent comfort and prevents the system from working inefficiently or struggling to maintain the set temperature. This feature contributes to the overall reliability and longevity of the primary heating unit, as it reduces the strain on the heat pump during peak demand. Historically, supplementary heating has been a crucial element in adapting heat pump technology for use in colder climates, extending its application beyond milder regions.
