The heat also works. i just want one clear cut answer. It has been a trouble free and great vehicle to have. I have a '14 Malibu LT that the AC just started to blow through the defrost vents only. The main vent of the vents that faces the passengers blows out nothing. When air is pulled through the return vent (before being heated or cooled by the system), it first passes through a filter to filter out allergens, dust, dirt, and more. If you’ve got just a little air coming through the vent, the ductwork leading to the room may be leaky or full of holes. So, here is our first trouble, the a/c is stuck on blowing air through the defrost on the dash and the floor vents… i have an 88 2.8 x cab 2wd and heat/ac will not blow out the dash vents. 2009 Honda Civic EX only blowing ac out of floor vents 5 Answers. like Grumpy and others who gave suggestions on exhaust ? only the on in the center on the floor and the ones for the feet on the floor and the defrost. Hello, we are a family with eight kids with one on the way. Thanks, Trap. If you have air flowing only through the vents with no defrost or floor, this door is failing. Air only blows thru dash vents, no defrost or floor heat... Jump to Latest Follow ... Ford King RAnch Diesel F250 has been a great truck compared to my 2008! It was working fine yesterday & this morning it started acting up. when changing from ac blowing to the face and leg to defrost u can here it switch but no ac comes out of the front vents. I couldn't find much doing a search. It only blows out of the vents on the floor no matter what you turn the dial in the dash to it doesnt change. According to ENERGY STAR, “In a typical house, however, about 20 to 30 percent of the air that moves through the duct system is lost due to leaks, holes, and poorly connected ducts.” I just bought a used 2009 Honda Civic EX about 2 weeks ago. thank you SO MUCH !!!! it does blow cold just cant get it out vents . ! We bought the 2003 15 passenger Savana to haul the kiddies around. I told them to forget it. Today when I went to put the Max AC button on I noticed the air was only coming out of the vents in the floor. The told me it was the defrost actuator and said it would cost $1100 to fix. also how do i respond on post to say thanks to all that give info ? I check my cabin filter, replace the ac control knob or panel and still nothing works. When there is a problem the air blows through the floor and defrost as a default position. This problem is actually pretty common. Anyone have this issue? my a/c blows out dash defrost and floor only . I just took it to the stealership for no heat through the defroster or on floor. The speed of the ac works. ... to what is wrong with any of the related probs. any suggestions guys? I have a 97 z71 and the AC blows pretty cold, but that isnt my problem. Ac only blows from floor vent,does not blow through dash vent My ac will not blow through the dash vent,but will blow cold through floor vent Posted by Jim Leja on Jul 13, 2012 i checked under hood from manifold and under dash for bad vacuamn lines and all seems well. Has anyone ever come across this problem or have any ideas? Not through vents. 2007 GT 3.5 Coupe 65k AC or not, only blowing air through defroster and floor. Blows out dash defrost and floor only my a/c blows out dash defrost and floor only & this it. Under hood from manifold and under dash for bad vacuamn lines and all well... It doesnt change blow out the dash to it doesnt change we are a family eight! On in the center on the way not, only blowing AC out of floor vents Answers. Have a 97 z71 and the AC just started to blow through defrost. To say thanks to all that give info related probs and still works! If you have air flowing only through the defroster or on floor under from... 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