If your home's HVAC system uses a heat pump, it's likely that there is an emergency heat or EM heat setting on your thermostat. As its name implies, this functionality works as a backup heat ...

In normal conditions, your heat pump is the primary worker ... switch the mode on your thermostat. Many thermostats have a setting called EM heat, emergency heat or auxiliary heat.

It’s manually activating the emergency or auxiliary heat ... No. Hepke says only thermostats that control a heat pump will have this setting, which makes sense since other heating systems ...

The company says that its new SL22KLV heat pump system can supply heat in temperatures as low as -28.9 C. It uses R-454B as ...

In normal conditions, your heat pump is the primary worker ... you might want to switch on emergency heat manually. A thermostat shows auxiliary heat activated, which may happen automatically ...

emergency heat, or auxiliary heat. You shouldn’t normally rely on it to warm your house, but it’s useful when the thermostat’s regular settings aren’t cutting it. Your heat pump is the ...