IWFA recently published a new window film study comparing window tint energy saving performance against other investments like air conditioning replacement, stucco installation, wall and roof insulation. The study also took each of these possible energy efficiency projects and examined them in different Californian environments:
Northern Bay Area – moderate climate
San Diego – coastal climate
Riverside – inland climate
Sacrament0 – Central Valley climate
Home tint easily took the the prize as the #1 most energy saving home improvement investment for existing homes