Hi Scotty, I have a Honda Ridgeline 2007 and my driver side heater blow out cold air, the other vents blow out hot? Any idea what could it be??

I assume you mean the other vents blow hot. if so,just being low on coolant can do that. OR, the blend door actuator on the cold driver's side could be broken,, a GIANT expensive job

Yes the other vents blows hot. Wow, where is the blend door actuator located? And what is the process to fix/change it? Thanks