Chosen Solution
2008 Jeep Liberty ac working good. heater blowing cold air. coolant level is good. temperature gauge in good level. floorboard not wet like other autos I’ve had that had bad heater core.
I would take a look at the actuator. Here’s a very good answer on this with diagram on it: http://www.justanswer.com/jeep/7fdvs-lib…
Take the two hoses near the fire wall to the heater core off and flush it out, make sure to flush out in reverse, so as not to push obstruction further into the heater core. Take a water hose and flush it out till clear of obstruction
Most likely be the resistor behind the glovebox. Very common issue
