auxiliary heat vs emergency heat

What Does EM Heat Mean on a Thermostat With a Heat Pump?

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Horizontal graphic explaining what EM Heat means on a thermostat with a heat pump, featuring 3D icons, a thermostat display, heat pump unit, and comparison of Heat mode vs EM Heat mode in warm orange tones.

At TheAtticOwl.com, we have seen that one of the most confusing thermostat settings for homeowners with heat pumps is EM Heat. Many people assume it is just a stronger version of regular heat, but in practice, it is a backup mode that should only be used in specific situations. In our experience helping homeowners better … Read more