Choosing energy-efficient windows in four easy steps

This website page explains how to choose energy-efficient windows in four easy steps. It provides useful information on how to select windows that will help save energy and money. The page defines U-factor, solar heat gain coefficient, visible transmittance, and air leakage, and explains how they affect the energy efficiency of windows. It also offers tips on selecting the right type of window for your home and climate. Topics covered include U-factor, solar heat gain coefficient, visible transmittance, air leakage, window types, and climate considerations.