![ashrae 90.1 vestibule requirements ashrae 90.1 vestibule requirements](https://allisonclairechang.org/pictures/552250.jpg)
Standard 90.1 has been a benchmark for the commercial building energy codes in the United States and a key basis for codes and standards around the world. Extensive updates were added to the rules for lighting modeling.Īlso new to the standard is use of the new fan energy index (FEI) as the metric for efficiency provisions for commercial and industrial fans and blowers.
![ashrae 90.1 vestibule requirements ashrae 90.1 vestibule requirements](http://pages.nxtbook.com/nxtbooks/ashrae/pubcatalog_2017summer/iphone/ashrae_pubcatalog_2017summer_p0005_midres.jpg)
ASHRAE has released an expanded, revised version of a well-known energy standard.