Moderator Post (s) for this thread: >The most usual causebyHKestenholz on 02/13/2006
filter plugged,blower wheel loaded with crud,evaporator coil blocked(if you have central air),blower motor ready to die,a lot of things can cause this.have it checked out.another thing(usually with rental property)air ducts being used as a garbage can:filled with debris.