Anyone Know...?

[wwest]

I seem to remember that for the 04 and later Prius there is a C-best option to avoid the reheat/remix cycle of the "standard" automatic climate control.

In the "standard" Lexus climate control system ALL of the system airflow is CHILLED via the A/C evaporator operation at ~35F and then a portion, or all, of the airflow is reheated via a pass through the heater and then remixed to avoid passenger discomfort. That cycle would require that the engine coolant pump motor be operating anytime the A/C is enabled resulting in additional drain on the batteries.

That might even require that the ICE run more often to keep the engine coolant HOT.

[patt]

I seem to remember that for the 04 and later Prius there is a C-best option to avoid the reheat/remix cycle of the "standard" automatic climate control.

In the "standard" Lexus climate control system ALL of the system airflow is CHILLED via the A/C evaporator operation at ~35F and then a portion, or all, of the airflow is reheated via a pass through the heater and then remixed to avoid passenger discomfort. That cycle would require that the engine coolant pump motor be operating anytime the A/C is enabled resulting in additional drain on the batteries.

That might even require that the ICE run more often to keep the engine coolant HOT.

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wwest, I don't see any sign that this is happening. If it was, then energy drain when the climate control was running at all would be the same as hot weather energy drain and it isn't. Where do you get the information?