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Guide describing how to install obvious ventilation controls for continuous and intermittent exhaust fans used for whole-house ventilation.

Guide describing how to set controls on an exhaust fan for continuous operation.

This guide describes how to install a whole-building ventilation system to provide adequate dilution of indoor air contaminants.

Guide describing the testing of duct leakage in central ventilation systems for multi-story, multi-family buildings.

Guide describing how to install a bathroom exhaust fan to remove excess moisture.

Guide describing how to install outdoor air intakes and connect them to the return side of the HVAC system, using controls installed to operate intermittently & automatically based on a timer and to restrict intake when not in use (e.g., a motorized damper).

Guide describing how to install back-draft dampers in exhaust fans to make a shared duct possible.

Guide describing how to conduct duct leakage tests per RESNET protocols on all components of the HVAC system (including the air handler, ductwork, register boxes/boots, and all air devices such as diffusers, registers, or grilles).

Guide describing method for designing and installing ducts in a raised ceiling chase.

Guide describing proper sizing and installation of high-MERV furnace and air-handler filters.

Guide describing how to install jump ducts in bedroom walls to balance air pressures between rooms, enabling stale air to return of the central air handler, even when room doors are closed.

Guide describing the use of building cavities as supply or return ducts.

Guide describing how to air seal and insulate flex ducts.

Guide describing design and installation of compact duct systems for central heating and cooling systems.

Guide describing the use of ducted returns to return stale air from bedrooms and bathrooms to a central heating system.

Guide describing how to design HVAC systems to be located within the conditioned space of the home, either in a utility closet or in an attic, basement, or crawl space.

Guide describing options for adding dehumidification equipment to a home to maintain indoor relative humidity below 60%.

Guide describing the repair and reconfiguration of the air handler closet and platform when replacing the air handler.

Guide describing how to correctly install flex ducts without kinks or sharp bends.

Guide describing how to install a corrosion-resistant drain pan in condensate-producing HVAC equipment.