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Window and door technology has made great strides over the past
three decades. Glazing options like low-emissivity glass have increased
energy efficiency. Numerous sources on the web provide detailed
information on products and can provide recommendations for various
applications, whether your house faces the cold winter months of
Minnesota, the hot sun of Arizona or somewhere in between.
Efficient
Windows Collaborative
Consortium of window and door manufacturers and other organizations
supporting the use of energy efficient windows. Its web site features
a great deal of useful information covering window energy performance
issues. Detailed information is provided on different glazing and
frame material options. Comparison tools show energy savings provided
by various window types in various cities throughout the country.
A calculator even allows information about an individual home to
be entered, and shows what energy savings different window products
can achieve.
Energy Star Windows
The Energy Star Windows Program is a voluntary partnership between
the U.S. Department of Energy and the fenestration industry to promote
sales of energy efficient windows, doors and skylights. Window products
eligible to carry the government's Energy Star label must meet high-performance
criteria established for different climate zones within the U.S.
The site includes links to manufacturers of Energy Star windows,
as well as links to Energy Star window dealers and retailers.
Lawrence Berkeley
National Laboratory-Windows & Daylighting Group
Leading window research facility sponsored by U.S. Department of
Energy, its site provides a wide variety of technical resources.
The site offers a downloadable 16-page brochure on selecting energy
efficient windows. It also offers downloads of RESFEN, a program
designed to assist users in comparing how different window types
will effect the energy requirements of a home.
National Resources
Canada
This department of the Canadian government offers a downloadable
"Consumer's Guide to Energy-Efficient WIndows and Doors."
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