Use this to get an overview of the entire site.
Articles about air conditioning.
The other Mercedes not-so-strong point. Help within.
Where to get it and how (and not pay an arm and a leg)
Articles about the controls
Want to know what those levers, dials and switches do? What to know how to fic them when they're broke?
Articles about the electrics
Go grab a voltmeter and remember red is positive and black is negative. Usually.
Arrticles about HVAC mechanics
Having trouble getting something apart or back together? That kind of stuff is covered here.
Articles about the HVAC plumbing
If it can get you wet or cold you can read about it here.
The type II HVAC servo found in the 300D and 116 chassis cars was an unmitigated disaster. When they worked they didn't work for long and are hideously expensive to repair. But, take heart there is a drop in replacement that works.
Ducts, flaps and vents
Articles about things that duct air go here.