Not sure your climate is hot enough. But in TX we routinely carry over 100, often 110 for about 3 months straight.
My water main failed where it mated up to my slab foundation. My trusted plumber looked at the new tile I laid throughout the house and opted to run it up through the wall and into the attic. Going with pex. Then back down through the walls to tie back into all the fixtures.
Added surprise when I turned on the outdoor hose bib and searing hot water came out for about 15 minutes. Now why did it do that? I scratched my head for a while, never did that before.....the heat down here collected in the attic, and even though I have a mature pecan tree canopy over house, you can literally fry an egg on the pavement. My son did it last summer during the drought.
My house gas bill now is about $8/month.