Heat vs. Em Heat Mode: Are You Using the Right Setting? Learn the Key Differences Between Heat and Emergency Heat Mode on Thermostats and Ho

Heat vs. Em Heat Mode: Are You Using the Right Setting? Learn the Key Differences Between Heat and Emergency Heat Mode on Thermostats and Ho

15:32 Mar 27, 2026
About this episode
Welcome to the audio version of the following web page: https://hvac.filterbuy.com/resources/troubleshooting-guides/what-is-the-difference-between-heat-vs-em-heat-mode-on-thermostats-and-how-do-they-turn-on/ In this episode, we explore the difference between Heat and Emergency Heat (EM Heat) modes on thermostats and how these settings work in heat pump systems. Understanding when auxiliary heat or EM Heat activates helps homeowners manage comfort during colder weather while avoiding unnecessary energy use. Knowing how these thermostat modes operate can also prevent confusion when your system switches heating sources automatically. Keeping your HVAC system efficient during heating season also depends on proper filtration and routine system tune-ups. Pleated air filters in sizes such as 12x30x1, 12x12x1, 16x25x1, and 12x24x1, available through retailers like Amazon, Walmart, eBay, Home Depot, and Target, help capture dust, allergens, and airborne debris before they circulate through your home. Choosing the right MERV rating and replacing filters regularly
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