Why doesn’t my ac/ heater blow any air

If no air is blowing, it's not the under-hood components of the air conditioning system that is of concern, but rather the blower motor and the controls for that inside the car. Testing should be focused there. There is a blower motor resistor, blower motor relay, switch and the motor itself, along with wiring and connectors that need to be inspected. www.repairpal.com/repair-shops