Ashrae 90.4 Pdf |verified|

Released in 2016 and updated significantly since (latest version 2022), ASHRAE 90.4 was the first standard written specifically for data center energy efficiency. It is now referenced in the IECC (International Energy Conservation Code) and many local building codes.

"No, sir. It’s the Aether Tower. I’m modeling the data center floors. I need ASHRAE 90.4. The specific requirements for the Mechanical Load Factor calculation. My baseline is rejecting the simulation and I can't find a clean copy of the current standard." ashrae 90.4 pdf

Unlike prescriptive standards that dictate specific components (e.g., "You must use an economizer"), ASHRAE 90.4 uses a . It sets maximum allowable Mechanical Load Component (MLC) and Electrical Loss Component (ELC) limits based on the local climate and the IT load. Released in 2016 and updated significantly since (latest