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 | Mar 23, 2020
Florida legislature passes bill to reduce retainage on state and local projects
House and Senate vote is nearly unanimous; law would go into effect Oct. 1.
Codes and Standards | Mar 20, 2020
Feds prod use of eminent domain to force people out of flood-prone homes
Local officials that don’t comply could lose federal money to combat climate change.
Codes and Standards | Mar 19, 2020
ASHRAE provides COVID-19 resources for operating, maintaining HVAC systems
Includes recently approved position document on Airborne Infectious Diseases.
Codes and Standards | Mar 19, 2020
CaGBC launches new version of its Zero Carbon Building Standard
Version 2 draws on lessons from more than 20 zero carbon projects.
Codes and Standards | Mar 16, 2020
Concrete industry reduces carbon footprint by 13% over five years
Result mostly due to more efficient use of Portland cement.
Resiliency | Mar 13, 2020
Feds push use of eminent domain to force people out of flood-prone homes
Local officials that don’t comply could lose federal money to combat climate change.
Codes and Standards | Mar 12, 2020
Design guide for sloped glazing and skylights updated for first time in 30 years
Helps with choosing proper glass for non-residential applications.
Codes and Standards | Mar 11, 2020
Two tree species native to the Northeast found suitable for CLT
Eastern white pine and eastern hemlock pass strength testing.
Codes and Standards | Mar 10, 2020
Prescient receives ICC certification for seismic resilience system
Technology suitable for buildings up to 12 stories in earthquake-prone areas.
Codes and Standards | Mar 6, 2020
Design firms creating plans to re-imagine D.C.’s tidal basin
Area including National Mall is facing increased flood risk.