Condensation has to be coming from somewhere where there is moisture getting into the air duct somehow. IF it is a small enough leak it may not show on the carpet.
Do you park in an area that debris such as leaves can clog up the wiper drain?
Radiator cap wouldn't be related, but do you ever have to add antifreeze? Actually is the moisture on the window greasy at all? Or does it purely seem like water moisture?
Not sure if there would be a tie into the a/c repair, there is an evaporator core in the HVAC unit. Try running the A/C on you next ride. When you get to the destination, see if there is any water dripping underneath your car while it's running. Maybe the evap drain is plugged and holding moisture?
On the cabin air filter, I had thought maybe it was retaining mostiure and acting like a paper towel hold moisture until you ran the heat where it we dispurse the mositure and allow it to soak up more afterwards.
Saturday, April 19th, 2008 AT 5:31 AM