Well I spoke to soon. It was -29 degrees celsius this morning (-20 F), started the car for a good 10 min, was warm when I got in, got even hotter as I was driving to the store, let it idle while I ran inside for about 2 minutes, came back in and she's blowing freezing air again!!!
Gonna go back to Nissan tomorrow and tell em. Hopefully they can make sure things are done right.
Update!
Well nissan told me today that I can't run the fan on high or set on auto (if it's cold in the car, the fan will go on high automatically). They said that it doesn't get a chance to warm up and just shoots all the cold air inside the car before warming it up. So we need to put it in the middle speeds. I'm not sure about you, but shouldn't it work at all speeds? it is in fact a new car and even my older cars warm up on the highest fan speed no matter what. We'll see how that goes tomorrow morning.