This fall we've been working on winter energy-saving tips, and last week we decided it was time to put one of our ideas into action. We have a forced-air duct system connected to our geothermal system. Our ducts have no insulation, and so are a bit inefficient. In the summer the basement feels cold, and in the winter, quite warm, and a portion of this is due to the fact that the duct system leaks. So Tom found a product called TempShield single bubble white/foil, and hired Dunbar construction to put it up (although you can really do it yourself - just requires stapling). The process took about 1/2 day. The material cost $160, and although it's hard to measure energy savings, we're guessing that it will be in the ball park of 5%.
We'd recommend this if: 1)you run your fan all the time, or 2)your basement is cold.
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