
What Is EM Heat and When Should You Use It?
If you’ve ever noticed “EM heat” flashing on your thermostat and wondered what it means, you’re not alone. At Summers Comfort Heating & Air, we get this question all the time—especially during winter. The short answer is that EM heat, or emergency heat, is a backup heating mode your system uses when your heat pump can’t keep up or stops working properly. But there’s a bit more to it than








