I haven't had our Volt long enough to test it but was curious how well the defroster works in the Volt compared to regular ICE cars.
Typically the HVAC defrost mode on ICE cars has the AC running along with heat to get the moisture or fog off interior glass. Does the Volt run the AC compressor with the heat in defrost mode to accomplish the same thing?
The front windshield defroster works well. You can speed things along if your select the Defrost button on the HVAC control panel, there is also a Max Defrost button. There is a setting for Autodefog you can enable, this will turn on the AC or heat as required to lower the humidity in the cabin to keep the windows from fogging.
If you are using the electric heat, try turning off the automatic climate control and selecting Max Defrost with the temperature set to 80F or higher. The Volt can crank out quite a bit of electric heat when called for but it is at the expense of battery range.
Volt owners should be glad that some of the Volt design team and engineers were from Detroit or at least spent time there and know winter. GM has provided five ways for Volt owners to stay warm:
1) Heated seats and optional heated steering wheel
2) Preconditioning the cabin for 10 or 20 minutes (the Volt can be preconditioned whether or not it is plugged in)
3) Electric heat that will quickly warm the cabin. (The electric heating element can draw up to 9kW but typically uses less power.)
4) Engine Assist Heat will cycle the gas engine on and off in cold temperatures to heat the cabin while using very little gas. Engine Assist Heat can also be set to run during preconditioning when plugged in if it is safe to start the gas engine (when parked outside, not in a garage.)
5) Using the internal combustion engine to power the Volt; energy that is otherwise lost through exhaust heat is captured and can be used to heat the cabin.