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North Carolina Alternative Energy Corp

A non-profit organization, examined air condtioner manufcacturers' efficiencies versus the actua lefficiencies that resulted after installation:

  • 90% of the units tested exhibited some sort of energy-wasting problem
  • 50% had an improper refrigerant charge
  • 40% failed to meet minimum airflow criteria
  • 20% were barely inside the range specified by manufacturers
  • A deficiency of only 20% of indoor ariflow reduces the efficiency rating by 17%
  • A 15% return air leak from a 120 degree attic could reduce efficiency by 50%
Texas A&M University
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Saturday, 19 October 2019

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