#13 of the series
Seal heating and cooling ducts – 20% of the air pushed through ducts doesn’t reach its intended location. Correct problems with a HVAC contractor which could chop $400 off an annual $2000 energy bill.
For more information: http://www.lbl.gov/Science-Articles/Research-Review/Highlights/1998/v3/EES_duct.html
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Green Real Estate Appraiser 