If you don't breathe then there's less moisture to build up on the windshield, but that might not be the best suggestion. The pre-heat seems to help keep the engine off and take the edge off the interior temps, which combined with the heated seats and steering wheel use a lot less energy.
One thing I've found works ok for mild fogging is to set the climate control for defrost then turn off. I can then press the "Off" button to toggle on to last setting (defrost) for about thirty seconds on low fan speed, then press Off again to switch off. For a half hour commute I've only had to do that three or four times and it isn't on long enough to cause the engine to fire up unless it was already coming on for battery temperature conditioning or extreme cold outside like the last couple days in the 20s.
Eric H. - '19 Pacifica Hybrid Limited - '04 Neon SRT-4 (eBlue/S2)
'92 Dodge Daytona IROC R/T - '91 Dodge Spirit R/T
'07 Ram 1500 - '14 CTS-V Wagon - plus some other stuff
Last edited by blackbird; 12-20-2018 at 06:18 PM.
Reason: Clarified which button being used.