What does zip code have to do with it? If your going to adjust the room temperature why not figure out an algorithm that calculates the optimum cooling temperature by measuring the return wetbulb, outdoor dry bulb and the amount of time it takes to raise the set-point in the room a degree Fahrenheit. You could then program the modulating condensing fan, the modulating compressor, the modulating TXV, and the modulating evaporator fan to all work together to form an ultra-efficient air conditioning system. You could buy a Fujitsu mini-split A/C system and see how all of this works out.
In the good old days they did that through approximation based on lunar cycles of 18 years. Today, we can do better.
Should be able to plunk all the insolation and "growing zone" data in there on a chip for use by the program ~ no matter where the A/C is sold.