Air Re-circulation?

[First Hummer]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by grfxboy21:
Maybe a stupid question, but when you don't have the air on, but hit the air re-circulation button does that actually turn on the air because when I hit that the air coming through the vents gets really cold like the AC is on? I was showing my dad when he rode w/ me to the store and he was like, that's gotta be the AC. </div></BLOCKQUOTE>

The button is to let outside air in vehicle.It recycles air inside vehicle when turned on.If you are going threw an area that has a bad smell you dont want to turn it off.