Can be 30, 40, or 50 Amp 240 volt double pole depending on the HVAC specs.
No, especially since the AC is used when you defrost the windows.
vaporizer hvac. and tandom system ac
BOTH
A 24 volt heating only or a 24 volt heating/cooling (if you have ac on the unit)thermostat.
The Furnace fan is used to assist the AC in doing its job It is not heating at all just air distribution.
no, heating is identical
the compressor is not running. Check your breakers.
AC
60 cycle AC
Glove box & behind passenger headlight
Check the nameplate on the actual breaker. Some breakers are rated for AC or DC. If it doesn't specifically list DC on the nameplate, then no, you should not rely on the breaker to adequately protect the circuit.
A DC/AC power inverter is used to convert DC, the power that comes from a car's battery, into AC, the kind of power that is supplied to a home and used to power larger electronics.