help with ac and heat

my car isnt letting any air out when i turn it on and would like to know how to fix it?

could you please be a little more specific. Do you mean the blower motor doesn't turn on and circulate the air? Can you hear the motor running but you feel no air blowing out? Does it not change from floor to vent to defrost?

yes the defrost works on the windshield but theres no air coming through any of the vents besides the one for the defrost. also there isnt any kind of air when i turn in the ac.

check the vacuum line from the throttle body to the HVAC system. The valves that switch the airflow from floor to vent to defrost are vacuum ooperated. If the vacuum line is disconnected or cracked, you can't switch modes.