What could be causing water to come into the passenger side floor? on 2003 Dodge Durango

Anytime I run the air or heat water will fill the floor. It is pure water with no antifreeze. I have been told its a condensation valve stopped up but have had no luck in finding it.

Asked by for the 2003 Dodge Durango
1 answer 2 comments
Your Evaporator case drain is stopped up. Its at firewall below evaporator case underside of body.
Do I need to remove the passenger side tire to get to the drain?
Probaly not...may have to raise it up to see it better.