I have a 1998 Ford Windstar. The A/C works fine, but the air only blows out of the defroster vents. It sounds like a vacuum hose to me. Where would be the first place to look? The vehicle has the rear A/C.....Heat, and with the A/C on, it only blows hot air, but Ice cold out of the defrosters. Help! Thank you.

SOURCE: 2002 GMC Yukon blows cold air from the front, rear works fine

check you antifreeze level and make sure its full

SOURCE: no air, ac, heat out of in dash face vent

I changed my switch..on my dash...that controls the different settings. All settings work fine now.

SOURCE: a/c and heater only blow air out of defrost

sounds like there is a vacuum leak, possibly under the hood.. Vaccumm is needed to change the mode doors.

SOURCE: 2006 Envoy SLT air suddenly stopped blowing from vents

the resister block needs changing... oddly enough i'm unsure of what fan you are saying is not working.... if it's the front.. the resister block is located on the duct work under the dash for the air... near the fan... you will see a connector going into the side of the duct work. two screws and the block comes out... should be fairly obvious for the rear one but it will be near the fan.

SOURCE: Dash vents will not blow air. Defroster and floor vents blow fine.

Is it a new vehicle? I had a new vehicle that had the same problem. Answer was that the holes weren't punched out of the vent.