Guide
Description
Guide describing how to air seal and insulate flex ducts.
Guide
Description
Guide describing the use of building cavities as supply or return ducts.
Guide
Description
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.
Case Study
Description
Case study describing a four-square Concord home retrofitted by Building Science Corporation in Massachusetts.
Guide
Description
Guide describing design and installation of compact duct systems for central heating and cooling systems.
Case Study
Description
Case study describing a DOE Zero Energy Ready Home 2014 Housing Innovation Award winner that scored HERS 45 without PV and 32 with PV and is the first home in the world to use a tri-generation system to supply electricity, heating, and cooling on site.
Guide
Description
Guide describing how to create a designated shelter-from-heat space in a home to help occupants successfully weather an extreme heat event.
Guide
Description
Guide describing the repair and reconfiguration of the air handler closet and platform when replacing the air handler.
Guide
Description
Guide describing how to conduct testing for adequate combustion air in the space where a combustion appliance is located if the appliance is located within the conditioned space of the home.
Guide
Description
Guide describing how to correctly install flex ducts without excessive coils or loops.
Guide
Description
Guide describing how to correctly install flex ducts without kinks or sharp bends.
Guide
Description
Guide describing how to thoroughly seal HVAC ducts to ensure air delivery without leakage, and to ensure economical and quiet performance of the HVAC system.
Guide
Description
Guide describing the use of building cavities as supply or return ducts.
Guide
Description
Guide describing the use of ducted returns to return stale air from bedrooms and bathrooms to a central heating system.
Guide
Description
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
Description
Guide describing refrigerant-based compression-cooling air conditioning systems for space cooling.
Information Guide
Description
Information guide describing options to consider when retrofitting or upgrading a home's HVAC system.
Guide
Description
Guide describing condensing boilers and hot water heat distribution systems used for home heating.
Guide
Description
Guide describing removal of construction debris from flex ducts and protection of ducts and HVAC equipment during construction to keep them free of dust and debris.
Guide
Description
Guide describing how to install a corrosion-resistant drain pan in condensate-producing HVAC equipment.
Guide
Description
Guide describing combustion furnaces with selection and installation guidance.
Guide
Description
Guide describing how to improve boiler efficiency in multifamily central hydronic heating systems by installing thermostatically controlled radiator valves (TRV) to reduce temperatures in overheated spaces.
Guide
Description
Guide describing gas-fired boilers and hot water heat distribution systems used for home heating.
Guide
Description
Guide describing sizing methods for cold climate heat pumps.