Forced 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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Forced-Air Systems With Room-to-Room Temperature Imbalances
Are so-called ‘smart vents’ a solution?
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Ductwork for ERVs, Dehumidifiers, and Forced-Air Heating Systems
Can three different appliances share the same ducts?
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Airport House: Heating and Cooling
Insulation levels play a role in selecting the most appropriate system
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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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The Science of Air Flow in Flex Duct
A Texas A&M study shows how much of a hit you take when you let flex duct sag
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All About Furnaces and Duct Systems
Most forced-air heating systems are still poorly designed and installed
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An Epidemic of Duct Disease and Enclosure Problems
A report of the day I spent going on air conditioner service calls with an HVAC pro
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Good Ducts, Bad Ducts
With ducts, it’s all about location, location, location
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Should Flex Duct Be Banned?
Like fiberglass batt insulation, this product is rarely installed properly
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