I have been without a heater for a long time. Very costly to fix and living in Texas it's not too much of a problem. Until it is when, like now, we are having a terrible cold front. My question is, even if there is no heat in the front passenger area, can heat get through to the AC control system in the rear? I guess if it's a servo issue, it will affect all the heating routes.

 

The rear AC is just AC - no heat. Refrigerant lines are the only ones running back there - no coolant lines.

Chip H.

 

Thanks for the prompt response.