I wish you guys with those auto climate controls would get this figured out soon!!!!!
We actually had this same discussion some time ago. Steve even added a youtube clip showing how A/C & heat cleared his windows extremely fast, & Steve lives in the south. Steve has an older Mirage, & all of the 2014-15 models have the same climate controls. He must be on vacation in some exotic part of the world? Otherwise, Steve would be chiming in.
Some cars with manual climate controls will automatically turn on the A/C when you click to full windshield defrost with full heat. I know my Honda vehicles did this. The Mirage & my Subaru do not. I control that function, which I prefer much better! In my old Honda CRV, the A/C came on within the full defrost was turned on year round. You want warm/dry air blowing in your car. It dries out the moisture. You probably don't want to be recirculating your air during this either.
"Never Get Foggy Car Windows Again" - If you know way more than Scotty Kilmer & just plain dislike the guy, please do not watch the clip below. I hate it when a discussion becomes about him rather than the information he presents. If you don't like his presentation, find a better one to share. Seriously, don't watch this if you don't like him. It's for those who may appreciate the information, & I am just trying to be helpful (not annoy someone).
https://www.youtube.com/watch?v=m68nBPYA9lU