Do attic heat, insulation and radiant barriers matter for cooling a Phoenix home?

Yes, attic conditions have a big impact on cooling costs and comfort in Phoenix. Heat builds up in the attic during summer, and poor insulation or ventilation allows that heat to transfer into living spaces, forcing your air conditioner to work harder. Adequate attic insulation, proper ventilation and radiant barriers can significantly reduce cooling loads. Many older homes in the area have insufficient insulation by current standards. When evaluating a home, check the type and depth of attic insulation and whether there is a radiant barrier installed. Upgrading attic insulation and ventilation is one of the most cost effective ways to improve energy efficiency in our climate.