I am trying to eliminate odors inside HVAC by cooking the mold that is presumably causing them, as suggested in https://mechanics.stackexchange.com/a/146/15334 (which got 39 upvotes)
However, I don't understand what the different knobs actually do internally.
One knob controls the "temperature". I set that to max, obviously.
The other knob controls how quickly air flows into the cabin. Should I set that to max (which heats the cabin the fastest), or should I set it to min, so that the hot air stays in the HVAC system instead of heating the cabin?
(If I knew how it all works internally, and where the mold likely is, I'd figure it out, but I don't)
Edit: found this illustration on agcoauto.com, which basically confirms what sweber wrote: