1:5:10:365 EcoTip Blog

February 12, 2008

:043 Sealing Ducts

Filed under: :043 Sealing Ducts — Tags: , , , , , , , , , — John Banta @ 12:01 am

Suggested Review – :039, :040, :041, :042

Today’s 1:5:10:365 Tip provides information about sealing leaky duct-work.

1:5:10:043 Tip: Leaky furnace ducts and connections result in energy loss. They should be sealed using secure strapping and an HVAC system approved mastic. Duct tape tends to fail –¬†often with expensive results.


Additional Information

EPA’s EnergyStar program has excellent information on correcting duct leaks at: http://www.energystar.gov/index.cfm?c=behind_the_walls.btw_ducts


Major sources of leakage include:

A. Leaky duct connections

B. Leaky return ducts

C. Furniture blocking registers

D. Leaks at furnace and air filter slot and duct tape failures

E. Fallen duct insulation

F. Leaky supply ducts

G. Kinks in duct-work restricting airflow


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