Cold House, Hot House, Green House

Saving energy at home requires paying attention to the building's windows, walls, and roof.

By Emily Sohn, 00:00 AM October 12, 2004

When it's cold outside, you turn on the heat. When it's hot, you turn on the air conditioning. That's about as much thought as most people ever give to temperature control at home.

You might want to dwell a little longer on the conditioned air that magically wafts out of household vents, however. The way you heat or cool your home has a big effect on the Earth, says John Carmody. He's director of the Center for Sustainable Building Research at the University of Minnesota in Minneapolis.


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