https://youtu.be/wCfwnC8SNII https://hvac.filterbuy.com/resources/air-conditioning-heat-pumps/what-does-em-heat-or-emer-heat-mean-on-thermostat-and-how-does-emergency-heat-work/ That “AUX” and “EM” heat on your thermostat? They’re not the same thing—and confusing them could cost you hundreds on your energy…