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Keeping Ducts Indoors

Five ways to bring ducts inside a home’s conditioned space

Posted on Oct 14 2011 by Martin Holladay

If you live in New England, you know that furnaces are installed in basements. But any New Englander who moves to Oregon soon learns that furnaces are installed in garages. And anyone who retires to Texas discovers that furnaces are installed in unconditioned attics.

Of course, there are many other examples of similar regional differences in construction practices. But this is one regional difference that matters. New Englanders have it right: furnaces and ductwork belong inside a home’s conditioned spaceInsulated, air-sealed part of a building that is actively heated and/or cooled for occupant comfort. , not in the great outdoors.

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Image Credits:

  1. Image #1: California Energy Commission
  2. Image #2: Whatley & Sons -
  3. Image #3: Steven Winter Associates
  4. Image #4: California Energy Commission

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