Back-Draft Dampers at Shared Common Exhaust Duct Description Guide describing how to install back-draft dampers in exhaust fans to make a shared duct possible.
Compact Air Distribution Description Guide describing design and installation of compact duct systems for central heating and cooling systems.
No Excessive Coiled or Looped Flex Ducts Description Guide outlining how to correctly install flex ducts without excessive coils or loops.
Whole-House Ventilation Strategies for New Homes Description This guide describes how to install a whole-building ventilation system to provide adequate dilution of indoor air contaminants.