Homeowner Jeff Wieland, left, talks with Peter VanBuren, president of TerraLogos Energy Group, about how to save energy at his home. Mr. VanBuren's company was in the process of using an AeroSeal duct sealing machine to pressurize and seal the gaps and air leaks in the ductwork of Mr. Wieland's home in Federal Hill.
Barbara Haddock Taylor, Baltimore Sun
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