my ac and heat is not coming out of the main vents. still coming out of the top

  1. profile image45
    cristi403posted 7 years ago

    my ac and heat is not coming out of the main vents. still coming out of the top of the dash and...

    the bottom though. this has happened before and a hose had cracked but i cannot figure out where that hose is, help.

  2. Norah Casey profile image69
    Norah Caseyposted 7 years ago

    It depends on what type of car or truck you have. The heat box in some vehicles will crack, reducing the back-pressure necessary to push air all the way through the vents. Or it could be the fan in the system is dead. Hard to say without knowing the model of car!

 
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