Where is the drain hose for my air conditioning

Some cars do not have a drain hose....they designed a drain into the plastic cover of the air plenum. You will probably need to get under the car (passanger side) and look for the drain...it might be a damp area as some moisture may still be trying to get out. You will then need to use something to unplug the drain. One of these new barbed plastic house drain tools may be just the ticket....the plastic is not likely to damage anything inside if you poke too hard.