The Window Source Atlanta installed these Bronze 9000 series replacement windows, including the Energy Miser package. The Energy Miser package on our 9000 series window can have a U Factor as low as .27. The Energy Miser package consist of LowE and Argon gas filled panes.
Tip: Educate yourself and understand the energy package replacement window companies offer you. It all comes down to the NFRC label. Why would you pay more for the same thing? Learn more about NFRC ratings