Ok so i had an alarm installed. And after i got the car home i realized that air was only comming out of the top vents and not the bottom by the feet. So i turned it on to jjust the feet and put it on high and it only came thru the top still. Ive had this problem before but just brought it to the dealer. But now my warrenty is up and i dont want them to screw up the alarm/neons/tv. Any idea what it is?

My best guess would be pinched vacuum hose.

Theres a vacuum hose that pops out really easily behind the stereo on the passenger side, just stick ur head up under there and you will see it, its a tiny hose that carries the air, and it usually ALWAYS is overlooked when putting a dash back on. If they had to take ur dash off, they might have disconected the hose.