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Duct Leakage
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New DOE 13 SEER Jan. 23, 2006
Duct Leakage
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About Matthew Wright the owner

 
 
     In new residential homes many contractors use the lowest bid and the home owner usually get a low quality installation. This includes duct leaks and low air flow cause low efficancy from manufactures ratings.

    "Studies done in North Carolina by Advanced Energy suggest that, on average, 15%-25% of what we spend for heating and cooling our homes is being lost through leaks in the ductwork. This is consistent with findings in several other states."  Advanced Energy http://www.advancedenergy.org/buildings/knowledge_library/construction_process/performance_testing_duct_work.html

"In many houses, heating/cooling costs can be cut 20 percent to 30 percent when leaks are eliminated. A 13 SEER system with 30 percent leakage works no better than a 10 SEER system with no leakage.  A system that has to work harder wears out faster, taking your investment with it."  Progress Energy http://www.progress-energy.com/custservice/carres/energytips/ducts.asp

"Field research conducted by LBNL has shown that the thermal distribution system—composed primarily of ducts—in California houses typically wastes 20–40% of the energy that goes through it. Previous versions of Title 24 implicitly assumed a much higher duct efficiency. The new version will better reflect the actual situation"  http://www.ucop.edu/ciee/Sherman1998/reschar.html#Standards

Duct Doctors Write Prescription for Efficiency "On average, duct leakage cuts heating system efficiency by 30 percent"

Make Sure Your Homes Ductwork is In Good Condition

Another Look at Duct Work: What You Cant See is What You Can End Up Paying For