NO, But it is expensive.
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.
Auxilary heat is a second source of heat when your primary source can not keep up on it's own (either electric or gas).
If there are lines coming from the transmission to the radiator, it has a cooler in the radiator. If there are lines from the transmission to an external heat exchanger, that would be an auxiliary cooler.
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.
Usually a backup heating unit. For instance in a heat pump when the temperature drops below the temperature where the heat pump cannot extract heat from the existing air electric heating elements kick in.
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.
For a 1999 Lincoln Navigator : Assuming you want a 50 / 50 mixture of antifreeze and distilled water ( like it was from the factory ) With auxiliary rear heat ( approximately 14 U.S. quarts ) Without auxiliary rear heat ( approximately 13 ) * of antifreeze *
double glazing cuts down heat loss because there is a vacume between the two pieces of glass.
During an emergency. i.e. when the heat pump is not working. If your heat pump can not keep your house warm, then the auxiliary heating coils (same thing as emergency heat) will come on automatically. If not, then there is a problem with your heating system.
Auxilliary heat is on... Change the filter... Then reset the filter change reminder and if the filter is not dirty extend the filter chamge reminder for a longer interval.
If you have a heat pump and the breaker blows in heat cycle then you probably also have auxiliary electric heat which is drawing too much current because of a faulty heater element.