NewSouth does not manufacture aluminum windows. Aluminum conducts heat more so than vinyl or polyvinyl products, allowing more heat to enter into your home from the extreme Florida weather. Aluminum windows are also more susceptible to corrosion and condensation. For more information, read our article on the Inefficiencies of Aluminum Windows (https://newsouthwindow.com/newsouth-news/florida-weather/inefficiencies-of-aluminum-windows/).