Installation usually accounts for 30-40% of the total project cost. In Tempe, "retrofit" installation (using the existing frame) is common and cheaper than "full frame replacement."
Look for brands that are popular in the Southwest, such as . These brands are engineered specifically for desert heat. home window replacement tempe
Beware of "storm chasers"—companies that follow weather events. In Arizona, look for established local pros. Installation usually accounts for 30-40% of the total