Well, just came back from getting an opinion from a Benz specialist shop and say that the issue is instead a bad evaporator core.

That's it,... the start of my divorce...

A conservative estimate was approx $2400, since it's an $800 part and several days worth of labor. For those without warranties... learn your lession vicariously from me,... and go and buy one before it's too late!

This thing was working fine just last year, and my car is only a 1999 with 60k miles. Do these things break down that easily or do I just have a lemon?