How to set up a/c and heat

Thanks for the responses, I'll post some more photos of it soon.

There are 2 more inlets on the opposite side.

Quality wise I'm not 100% sure, as long as I can get some good use out of it I'm okay with it. Living in SD I'm only gonna use it in the summer really.

Okay now I seem to have a better understanding of the valve. Is there any electronic shut off valves? I've seen some vacuum operated shut off valves but, is there like a switch I can acces from inside the car? Vs having to pop the hood and turn a knob.