https://www.re-thinkingthefuture.com/designing-for-typologies/a3125-10-things-to-remember-while-designing-in-hot-dry-climate/ 9. Shading Devices/ Elements While designing in a hot and dry climate, it is important to place shading devices such as awning, shutters, or pergolas to prevent the excessive heat directly penetrating the façade. Devices like visors can be provided on the roof, offering protection to the façade from extreme radiations and thus maintaining a comfortable temperature in the interiors. Casement triple pane vinyl windows with reflective glaze and lowest U-factor and best energy ratings. “The largest point of energy loss in a home is windows.” If you have blown in attic insulation feel free to go from 6 inches of blow in up to 12inches, bring your attic to R-30. You can add furring strips and add a layer of insulation outside the home and then siding over that, bring walls from R-19 to R-25. Typically added inside the home on older concrete homes. https://www.h2ouse.org/what-is-a-furring-strip/ White roof if you can. https://www.jlconline.com/article/building-an-efficient-house-in-a-hot-climate_o I think they make reflective exterior paints. Also window screens that are made thicker for sun blocking that make a big difference. Window awnings work too. An AC system with a SEER 18 rating. Consider a ductless mini split for the room you spend most your time in and let the rest of the home go to 82 deg or higher.