Home energy use accounts for an estimated 20 percent of a household’s overall footprint. These days, with the dire warnings about climate change a part of our daily consciousness, many people are working on ways to substantially reduce the size of their carbon footprint. In doing so, they can reap some cost savings as well. Phil Coleman, president of aFewSteps.org, an expert at energy efficiency, sets a high bar for his neighbors. I should know, I live across the street from him.

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