Energy-Efficient Windows

    Research output: NRELMarketing


    Windows can be a major source of heat loss in the winter and heat gain in the summer. This informative fact sheet provides tips on reducing energy loss through windows, including caulking and weatherstripping, layering glass and air spaces, and choosing the right frame materials.
    Original languageAmerican English
    Number of pages6
    StatePublished - 1994

    Bibliographical note

    Produced for the U.S. Department of Energy by the National Renewable Energy Laboratory

    NREL Publication Number

    • ACNR/MK-15860

    Other Report Number

    • DOE/CH10093-290


    • air infiltration
    • building materials
    • educational tools
    • EE
    • energy conservation, consumption, and utilization
    • energy efficiency
    • heat losses
    • thermal insulation
    • vapor condensation
    • weatherization
    • windows


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