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Installation Issues
Installation Issues
Home Energy Magazine Reports
An engineering study found three main areas of concern:
Duct Leakage
- Average loss per home = 360 cfm
- Average loss (as % of sq. footage) = 19.5%
Refrigerant Charge
- 62% were overcharged
- 23% were undercharged
Sizing of the Unit
- 885 were oversized
- 2% were undersized
Recent Studies – Get the Facts!
Texas A&M University Found a 23% refrigerant undercharge could likely result in a 52% efficiency loss
Pacific Gas & Electric Found the average heating energy saving for:
- repair of disconnected ducts was 15%
- repair of diffuser leakage 7.5%
- correcting low air flow 5.6%
- repairing leaks & correcting refrigerant charge 18.4%
Lakeland Electric & Water Researchers found that by repairing leaking duct work, cooling energy was reduced by an average of 17.4%

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