You have both an HEV and a PHEV right? Have you ever tried to compare your fuel economy in the winter from driving first one and then the other to work? I was under the impression that once you've warmed up the ICE, if you switch to EV mode but the ICE continues to run to make heat, that it runs in a way that is pretty efficient? Obviously, if you make a long trip and you don't manage to use a significant amount of your EV range over some stretch of that trip, then the PHEV isn't helping and you're probably getting worse economy than you would in an HEV due to the extra weight. On the other hand, if you have any serious climbing to do and you conserve the PHEV's battery charge for that section of the trip, it's nice to have the extra power assist and might even be more efficient for that kind of driving.
No, as I stated, I did not buy the PHEV becuase I live in Ontario, and they are just about impossible to get short of special ordering them. When I purchased my HEV they were not even really officially for sale in Canada, yet my dealer did put on on special order for one of thier customers and it took 6 months to arrive. By that time, the purchaser has lost his job (or so the dealer said) and financing fell through. They sold it 3 days later.
As for the heating. I had said when you get down to a cold temperature that it does up here in Canada, the residual heat inside the ICE is not enough to run the heating. I know that from experiance this past winter we had some pretty cold days. Even at stop lights when normally the engine will turn off, if the heating was left on the ICE did not shut down. If however, you turned off the heating, the ICE will shut off and the NIRO would run in EV mode. I wondered why the engine was running quite high revs and not shutting off even though the battery level was near full. That is what caused me to try experimenting. I found that I could get better fuel efficiancy to manually keep modulating the heating on/off based on battery level.
I cannot imagine that a PHEV would have any difference in tranfer of heat from the engine compaired to the HEV. I have not heard of this CCP package and can't see any reference to it on the KIA Canada web site. I know they do offer heated rear seats on the upper model, but that doesn't mean that it has an electrical air heater for the car. They do install an electric heat booster for the defrost/defog that will help heat up that function, but it only kicks in under certain conditions and it is a supliment to the engine and not a replacement.
-25 degrees is pretty darn cold. The original poster didn't really give any indication as to where they live, so I took a guess it was not in BC or else they would be taking advantage of the generous NDP goverment rebates and not asking or even considering an HEV as it likely costs more than the PHEV after rebate.