Return Air
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Return Ducts for Forced-Air Systems
A fresh look at door undercuts, jumper ducts, and transfer grilles
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Fixing Problem Ductwork
Four common reasons ducts fail to perform optimally and solutions for repairing them
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An Easy Retrofit for Return Air
For homes without dedicated return grilles in the bedrooms, this easy-to-install device provides a return air pathway
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Where Does the Air Come From?
Are the various registers and diffusers in your home bringing in outdoor air or recirculating indoor air?
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Return-Air Problems
What happens when the bedroom doors are closed
