What does EM HEAT mean on thermostat?

What does EM HEAT mean on thermostat?

emergency heat

What is the drawback of emergency heat?

Drawbacks of Emergency Heat In comparison to relying on a heating pump alone, emergency heat is much less energy efficient. Though the emergency heat setting does represent a means for warming up homes, it can cost twice what the heat pump costs in utility expenses.

Will emergency heat cut off?

Turning off emergency heat is not recommended. If you turn it off, your heating system won’t work once outdoor temperatures drop below a certain temperature, usually 30 degrees Fahrenheit.

How do I set my nest to emergency heat?

Turn emergency heat on

1. Press the thermostat ring to bring up the Quick View menu.
2. Go to Settings. Equipment.
3. Select Continue when the wire diagram appears.
4. Select Continue a second time when you find a summary of your system.
5. Select Emer. Heat.
6. Select Emer.

How do you know if your emergency heat is on?

If you aren’t sure that you have switched to Emergency Heat, a way to tell is the red indicator light going on. This light stays on until you stop using the Emergency Heat. It is letting you know that you are in emergency mode.

Why does my nest say Alt heat?

If a dual fuel system is installed, the Nest Thermostat will display “ALT. HEAT” or “ALT. HEAT STAGE 2” if the alternate heating sources are engaged. Auxiliary heat will only turn on when the outdoor temperature is below the auxiliary heat lockout temperature.

Should you turn heat pump down at night?

Heat pumps are most efficient when maintaining a set temperature. Turning the temperature setting down at night or when you’re away during the day, like work or school, isn’t recommended – which can be a big change if you’re used to managing a baseboard heating or gas furnace system.

How do I stop my auxiliary heat from coming on?

One of the simplest things you can do to keep your Honeywell thermostat from switching to auxiliary heat is to lower the temperature in your home. Setting the thermostat for somewhere between sixty to sixty-eight degrees is all you should need to do to get the problem under control.

Is it normal for AUX heat to come on?

The AUX heat setting on an HVAC unit usually turns on when you need heat fast. If this secondary heating system is constantly running, it may mean that the weather outside is very cold or that the thermostat is set higher than normal. It’s also possible that a part of the heat pump is malfunctioning.

Why did my AUX heat come on?

What Does It Mean on My Thermostat? If your aux heat indicator is on, it means your heat pump needs a little help reaching its target temperature setting. Aux heat comes from the same heat source as emergency heat, but aux heat works together with your heat pump, so it’s less expensive than emergency heat.