As I am researching this more, there is some risk in a dual system that if one evap route is running and the other is not, that a backflow can occur. I assume there is a way to add a solenoid valve within the system to shut off the second loop entirely. Again, any help with common fittings, methods ...

Thanks for that...makes perfect sense. Would you recommend aluminum tubing or is there possibly a good flex tubing, preferably braided for looks? Also, any info on connectors would be appreciated.

BTW, running just an 8x10" evap for an older Toyota pickup.

Hello, I am inventor of performance auto parts. I am looking for some help with a project that is related to the A/C unit on a car. Essentially, I want to be able to tie into existing systems to add a small evaporator for cooling a very small area. I don't want to give away more information than tha...