2000 Dakota 3.9l 4x4 AC. When I turn on my heater I get a blast of steam that comes out and all my windows get fogged up. If I turn off the fan, a small plume of steam will come out of the center vent. I don't think my heater core is leaking because my floors are perfectly dry. When I park my truck for a while there is a pool of water underneath the engine. It isn't antifreeze but clear water. Could this be a leak from my AC unit?

 

the clear water is just your evap drain and thats just condensation. so no its not a leak its just normal operation.