ASHRAE recently released an updated edition of ANSI/ASHRAE/IES Standard 90.2-2018 Energy-Efficient Design of Low-Rise Residential Buildings.
The 2018 revision of Standard 90.2 outlines cost-effective residential building energy performance measures that are at least 50% more efficient than those defined by the 2006 International Energy Construction Code (IECC), according to an ASHRAE news release. “Standard 90.2 provides a mechanism by which any residential building design can be easily evaluated against performance objectives,” said Theresa Weston, Ph.D., chair of the Standard 90.2 committee. “This update to the standard offers better alignment between this standard’s requirements and marketplace product availability as well as some revisions to improve the document’s clarity and internal consistency.”
The updated version provides:
· Clarification for modeling software requirements
· Guidance on the use of international climate data presented in ASHRAE Standard 169
· A new normative appendix on proper installation techniques for critical thermal resistance building components
· Improved prescriptive envelope performance data tables
· New performance specifications for ground-source heat pumps
· Minimum lighting efficiency provisions for single-family, large single-family, and multifamily homes
· Guidance on pool heater pilot lights, pump motor efficiency, and exterior de-icing systems
· Clarifications to multi-zonal building air-leakage testing procedures
Related Stories
Codes and Standards | Oct 11, 2021
New program to promote mass timber construction launched in Boston
City’s planning and development agency to award grants for projects in early-stage planning.
Codes and Standards | Oct 6, 2021
Intl. Code Council publishes EV and building codes resource
Assists communities in setting policies for electric vehicle charging requirements.
Codes and Standards | Oct 5, 2021
Feds award $1 billion to renovate health centers
Funds will modernize existing infrastructure and cover other COVID-19-related capital needs.
Codes and Standards | Oct 4, 2021
Boston City Council approves mandate for major emissions cuts for large buildings
Applies to buildings 20,000 sf or larger—about 4% of city’s buildings.
Codes and Standards | Oct 4, 2021
HPD Collaborative and Green Seal to align standards
Will result in expanded options for manufacturers to enhance sustainability reporting and certifications.
Codes and Standards | Sep 30, 2021
U.S. has a deficit of 5 million homes
Builders unable to keep pace with demand.
Codes and Standards | Sep 29, 2021
Mass Timber group study will compare structural round timber to glulam products and steel
Will compare costs, capabilities, and carbon impacts of structural materials.
Codes and Standards | Sep 28, 2021
Massachusetts creates Commission on Clean Heat
First-of-its kind body to set targets for buildings to reduce emissions from heating fuels.
Codes and Standards | Sep 27, 2021
Commercial real estate industry faces SEC climate disclosure regulations
Risks associated with climate change would have to be revealed.
Codes and Standards | Sep 22, 2021
Group proposes Carbon Use Intensity metric for new buildings
Plan would track embedded carbon on projects.