arnis wrote:AUTO mode is not some special mode that draws power. It just tries to maintain selected temperature.
This is why one should reduce temperature selection. CC understands that and will lower fan speed on its own
(after warmup cycle). It is possible to reduce consumption if fan speed is reduced (not always true for hybrid heater).
I find that Auto seems to overdo it for me. I wish there were a 50° selection. When it's super cold outside and inside it doesn't matter if I set it at 60°F or 90°F. The heater runs full blast. And since we have to dress for -20°F weather by the time it warms up to 60°F it actually seems too hot. 50°F would be just about right.
Exactly. This is correct. I would recommend enabling full recirculation mode in auto+lowest temp setting+feet. Up until it starts to fog up.
This will speed up heatup and also will limit heating element even more (due to the fact that input air gets very warm very fast).
The more/faster drivers footwell heats up the faster CC thinks "enough of full blast hot". Temp sensor is there.
If you don't have heat pump then it is also reasonable to reduce fan speed to maybe 2-3 bars. With heat pump down to 4 bars.
Feet only direction will heat up the sensor faster and will reduce heating sooner.
Low fan speed (AFAIK) speeds up water heating element degradation. It does have "max temp setting" but that is reached way
too fast if air doesn't cool down return coolant. Air PTC element also just stops as soon as it gets to max temp (105C I believe),
but it is not so prone to failure.
PS! I believe it is possible to adjust displayed temperature to real sensor data. Ask dealer to adjust CC temperature selection display value.
Depends what is the lowest cabin temperature sensor limit, it might work. BMW for example has +10C as minimum sensor value,
16C as minimum selection. But it can be adjusted so 16C shown actually means for example keeping 13C in the cabin.
Of course the best way to is to preheat the vehicle for 5 minutes. This dramatically reduces peak load at startup.
It is also much more efficient than heating while driving due to recirculation activated most of the time, with no fogging up.