Windows for Zero Energy Homes

Glass windows are important for mental health and connections to the environment that surrounds us, but they also can be an energy drain as uncontrolled sunshine or cold winds penetrate into the building through these thin, hard surfaces.  Here are some methods to reduce energy use through windows:

• Use high performance solar control windows designed for your climate.  Insulated frames are better in some situations, non-metal frames in other. 
• Attempt to orient your window spaces more to the south, with awnings to protect during summer heat.
• Aim for glass to floor area ratio of 15% or less.
• Add  2 - 3 foot overhangs on south facing windows in warm climates
• Use old-fashioned porches to protect windows and doors from weather -- sun, rain and heat