Chrysler Repair: heater, vacume, scaned

Question
I have a 2000 cherokee. the blower suns fine but i only get air on the windshield, nothing through the dashboard or on the feet... please advise

Answer
If the system is automatic,that is you set the temp. and
sysytem takes over,you would have to take it in and get
the body computer scaned for falt codes !!otherwise,check
to see if you have engine vacume to the control head and
under the dash where the vacume selenoids are. they  open
and close doors depending where you want the air to blow.
I know this is not much help,but the repair could be very
easy or very involved. thankyou  tm