B2. Install Replacement Windows
play a major role in the energy use and comfort of a dwelling unit. In the winter,
heat in a room is lost when cold outside air infiltrates around the edges of windows.
Heat also can be lost by conduction directly through the pane, even if the window
fits tightly. The cold drafts and the chilly windowpane make the room uncomfortable.
But windows also can help to heat a room by letting the suns rays enter.
While this solar radiation is beneficial in the winter, it can be a major source
of discomfort in hot, summer climates.
and multifamily buildings whose windows need replaced due to deterioration
Buildings in which residents control the heating
Double- and triple-pane
- Some windows
(e.g., casements) cannot readily be equipped with storm windows.
poor-quality windows can save 10 to 20 percent on heating energy.
the existing heating system is not adequately controlled, no savings will occur
because residents will have to open their windows for relief from overheating.
Energy Conservation for Housing A Workbook,
HUD, September 1998. Pages 7-9 through 7-12 address energy saving storm windows.
Energy Efficient Rehab Advisor. Discusses selection of windows, skylights,
New Energy-Efficient Widnows. Part of the U.S. Department of Energy's
Energy Efficiency in Apartment Buildings, American Council for an Energy-Efficient
Economy, 1995. ISBN 0-918249-23-6. Pages 90 through 95 address window energy efficiency.
ENERGY STAR® Windows. A partnership between the U.S. Department of
Energy and manufacturers of windows, doors, and skylights. Addresses energy-efficient
windows, applications, and more.
Windows Collaborative. Addresses windows and efficiency, including fact
sheets to help select windows by location.
Windows for Energy Efficiency. A more detailed Lawrence Berkeley Laboratory
publication that discusses energy-related characteristics of windows, energy performance
ratings, selection guidelines.
Rating Council. Provides consistent ratings on window, door and skylight