Joe E. Heimlich, Ohio State University Extension Environmental Specialist
Even as the weather remains beautiful and windows stay open, it is time to start thinking about winter.
As our society has become more energy conscious, we have increasingly created ways to effectively block drafts from doors and windows. Although this saves energy, it can present other problems within the indoor environment.
A major environmental factor in the home is that of dust mites, molds and mildew. Many of these can remain dormant for long periods and reactivate when conditions are appropriate for them. One place many spores live is within the duct systems of homes. While the weather is still warm, it is beneficial to have duct work "blown" or cleaned. Your yellow pages can identify who does this service. Also, don't forget to change the filter on any furnace system.
This also is the time to look for damp places within the house. As the home gets closed for the winter, these places become breeding grounds for many molds and mildew. Dry the damp areas of floors, walls (especially in basements) and under counters. Clean with a bleach and water mixture and air dry thoroughly to inhibit the growth of molds and mildew in these areas.
During the winter, be sure to use any indoor ventilation systems in damp places, such as bathrooms and kitchens. Moisture in the air helps make an area feel warmer, but excessive moisture can condense and provide fertile ground for allergens. When possible, allow natural ventilation to help "clear" the indoor air by opening windows slightly. This is especially important in homes of smokers and those who do a lot of cooking.
Energy efficiency and indoor air quality are not mutually exclusive. Use passive solar heat--windows and sealed glass doors--when possible to supplement indoor heating systems. Close drapes at night to help "capture" the heat indoors. Slightly cooler indoor temperatures also can be beneficial for health without feeling "cold."
What you wear indoors can make a big difference between feeling chilly and being warm. Wear heavy socks and slippers or shoes while indoors, as cold floors can make one feel colder than the ambient temperature.
For more information on indoor air quality, see the Ohio State University Extension community development fact sheets CDFS 191, Molds and Dust; CDFS 194, Sick Building Syndrome; and CDFS 189, Radon. These fact sheets are available from county offices of Ohio State University Extension.
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Keith L. Smith, Associate Vice President for Ag. Adm. and Director, OSU Extension.
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