Well we just turned our central air on yesterday, and it worked fine all day, now I think it is broken, but can't convince my Aunt of that. The thermostat is set to 68F, and its 80F in here, and for some reason my room seems hotter. I can't sleep in this heat . Theres no air blowing out of the vents either, something is wrong. The AC unit is original from possible the 80s, and she says it has never been re-charged, just serviced. Do you need to recharge central air units? Well anyway just thought I'de vent a little (no pun intended).