Ashrae 90.4 Pdf

Building codes (e.g., IECC, California Title 24) have begun incorporating 90.4 by reference. As of 2025, many U.S. states and international jurisdictions require 90.4 for new data centers over a certain size (e.g., 50 kW IT load or 500 ft²).

When you open the , you will find two primary compliance paths: ashrae 90.4 pdf

Since its 2016 release, ASHRAE 90.4 has driven measurable changes: Building codes (e

In an era where data center Power Usage Effectiveness (PUE) is under scrutiny, ASHRAE 90.4 provides the legal framework to achieve a PUE under 1.3 without sacrificing reliability. Do not rely on outdated, free versions of the PDF. Invest in the official standard, and make efficiency your competitive advantage. Building codes (e.g.