Ashrae 904 Pdf Upd May 2026

Standard 90.4 is a performance-based design standard developed specifically for data centers with a conditioned floor space power density greater than and IT equipment loads exceeding 10 kW . It serves as a companion to the more general ASHRAE 90.1 , which still governs non-data center elements like building envelopes and lighting. Key Performance Metrics

Compliance is determined by two primary components calculated based on your specific climate zone: ashrae 904 pdf upd

Measures energy losses across the power chain from the utility handoff to the IT equipment. Major Updates in ASHRAE 90.4-2025 Standard 90