AC rebuild?

[grannyknot]

The engine is coming out this fall so I might as well clean out and refresh the AC system, anything I should replace other than the dryer?

[SonnyA85]

There's YouTube videos where they spray something into the drain hole where the water leaks from under the car and then run the system and then lots of black water pours out that cleaning the whole internals.

[grannyknot]

Thanks, I'll look for that, sounds like they are rinsing the evaporator coil in front of the blower.