| Smoke Testing Ducts for Identification and Sealing of Observed Leaks - A Simple, Obvious & Cost Effective Measure "You Can't Fix what you Can't See" -Jon Klongerbo, Calcs-Plus
Duct leakage into unconditioned spaces can cost you hundreds of dollars per year in cooling and heating costs. Unfortunately, many of the State and National energy programs do not adequately address solving this problem, but only report leakage belatedly. We have developed a system whereas the duct system is tested and sealed prior to drywall and insulation installation. Since duct leakage is invisible, we introduce theatrical fog in the ductwork at low pressure to visually identify duct leaks to be properly sealed by the AC technician with the appropriate materials. Final duct testing of the house after drywall and insulation is too late to access the leakages once entombed above drywall and insulation, leaving the homeowner with 20 to 30+ years of high cost air conditioning and heating lost into the attic or garage. A recent study by the Florida Solar Energy Center (FSEC) on 30 new construction houses revealed cooling losses of 10-20% in the ductwork alone. Extrapolating this into monthly costs based upon 10,15, and 20% yields immediate monthly savings: Percentage of Leakage
Blower door and duct tester combination. Preferred method of measuring and quantifying duct leakage. Results used for reporting requirements, such as Energy Star Certification and other State and Federal programs, however remediation is still extremely limited.
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