Andersen Vinyl Windows U Value. U factor u value range between 20 to 1 20. This document provides nfrc certified u factor solar heat gain coefficient shgc and visible transmittance vt values for andersen products along with the corresponding energy star version 6 0 2015 climate zones in which the product and glass type are certified. This is desirable in very hot and sunny locations to avoid the greenhouse effect inside a home.
Where andersen has innovated with vinyl is by using it as a protective cladding for its wood core windows. The typical range of u factors for windows fall between 20 most energy efficient and 1 20 least energy efficient.
A higher u factor allows heat to escape.
This combination of a weather resistant vinyl exterior the strength of a solid wood frame and the beauty of a wood interior performs well beyond what vinyl can achieve on its own. One problem with vinyl windows especially darker color vinyl is sagging bowing and other deflection when subjected to high heat andersen states that fibrex stands up better against heat distortion than vinyl. This combination of a weather resistant vinyl exterior the strength of a solid wood frame and the beauty of a wood interior performs well beyond what vinyl can achieve on its own. Plus fibrex material is twice as.
