I am not sure about intake air vs supply air.

It used to be that folks designed ac units to drop the temp 20 degrees from the outside temp. I think most folks now probably try for 30 degrees, possibly more down south where it gets over 100 with regularity.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.