ASHRAE Releases New Edition of Residential Energy Performance Standard

ASHRAE has released the latest version of its residential energy performance standard, now titled ASHRAE/IES Standard 90.2, High-Performance Energy Design of Residential Buildings. This updated edition introduces advancements in building design and sets ambitious goals for energy efficiency, greenhouse gas reduction and indoor environmental quality.

Key updates to the standard include:

• Expanded Scope: Now covering multifamily residential buildings of any height, with a focus on energy efficiency, emissions reduction and improved IEQ.
• Retrofit Enhancements: New performance standards for major energy-related renovations, ensuring existing buildings achieve higher energy efficiency.
• Tailored Requirements: Updated guidelines for dwelling units versus common areas, with new standards for lighting controls and the thermal envelope.
• Stricter Energy Efficiency Limits: Lowered Energy Rating Index = thresholds and a new CO2e Rating Index that bring the industry closer to net-zero energy and carbon goals.
• Air Leakage Standards: Strengthened regulations to minimize air leakage and maximize building efficiency.

To purchase Standard 90.2-2024, visit ashrae.org/bookstore.