Green Term Defined: ASHRAE 90.1

Green Term Defined: ASHRAE 90.1

Harmony Square Dairy Queen

ASHRAE 90.1 is a standard in the US that provides minimum requirements for energy-efficient designs for buildings except for low-rise residential buildings. The standard was first created in 1975. It has since been updated on a regular basis in 2004, 2007, 2010, and 2013.


There are two paths for compliance with ASHRAE 90.1, both the prescriptive path and performance path. The prescriptive path requires all building components to meet a minimum set of standards specified in ASHRAE 90.1. The Prescriptive path includes requirements for building envelope, HVAC, domestic hot water, power, lighting, and other equipment. The performance path shows compliance using a building modeling program to illustrate that the design uses less energy than the baseline building built to ASHRAE 90.1 specifications.


One Comment Add yours

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s