Uh oh! You just talked yourself into a world of questions, matt.
Here's the problem: Neither my A/C nor heat works, but when I turn the A/C knob I get air out of the vents (at least). Also the second rad. fan kicks on. I'm assuming the A/C blower motor works. I don't hear anything running in the cockpit, so I thought the A/C motor was in the engin compartment, and the heater in the dash. Also, I took it to my mechanic (Porsche specialist) and asked them to see if they could get the heat working (need defrost, it's getting cold). They said they narrowed it down to a bad heater blower motor, and they'd have to remove the dash to get at it. I was pretty sure the heater fan was in the dash, it's been referenced on a number of posts when I did a search.