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Auxilary heat is a second source of heat when your primary source can not keep up on it's own (either electric or gas).

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Q: Why your thermostat say auxiliary heat on?
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Related questions

Should the thermostat be set to EM heat if the heat pump has Auxiliary heat?

Emergency Heat [EM] should only be used as a backup if the heat pump fails. EM heat uses 1.5 to 3 times as much or electricity as the heat pump.


What temperature should cause the the auxiliary heat to come on?

The auxiliary heat typically comes on when the set temperature is raised by 2-4 degrees higher than the current room temperature. This can vary based on the specific HVAC system and thermostat settings. It is designed to help the primary heat source keep up with the desired temperature in colder weather.


What kind of thermostat do you buy if you have a heat pump?

A heat pump thermostat.


You just changed the thermostat in 2002 elantra Now car runs cold and has no heat What could this be?

Hi, I had the same issues, I would gather to say it is the thermostat.


What is a device that regulate heat?

In a hot water heater, a thermostat regulates the heat


What type of thermostat does a heat pump with auxilary heat use?

Any brand or make will work if it is 2 heat 1 cool thermostat


How can detect a bad car thermostat?

If thermostat does not open - Vehicle will overheat in a short time - no heat If thermostat does no close - vehicle will not get to normal operating temperature - no heat


Is it dangerous to run the Carrier heat system on auxiliary?

NO, But it is expensive.


Is a programmable thermostat good to use with a heat pump system?

A programmable thermostat works fine with a heat pump. Just remember that a heat pump does not heat as fast as a furnace because of the lower BTU ratings so do not set the thermostat as far back as you normally would. Also make sure to buy a thermostat that has heat pump terminals.


Why no heat on 2001 Ford Taurus?

If i remove the thermostat will i get heat


What is em heat on a honeywell thermostat?

this stands for emergency heat


What is difference between auxiliary heat and emergency heat?

None. There is no difference. Auxiliary heat and Emergency heat are synonymous. It is the electric heat strips that kick on whenever the outside temperature drops too low (below 30 degrees or thereabouts) for the heat pump to efficiently heat the house. The electric strips are a little more expensive to run, but they will heat the house.