Hello. Throughout our build process this forum has been a great help. We are at the final stage of our construction in deep South Texas and I have a question regarding acceptable standards. We have a 5000 sq foot (living) single story home with very very high ceilings throughout. The construction is 2 inch concrete block covered by stucco and open cell foam spray throughout for insulation. Windows are relatively large though few and small only on the south facing side of the home. The home has three units consisting of a 5 ton and two 3 ton units.
What is the acceptable temperature low for a home in this environment (average 100 degree day)? In other words, should the home be able to cool to 72 degrees, 76 degrees, etc?