ASHRAE Standard 90.1 Resources

California Title 24 2001 vs. ASHRAE Standard 90.1-99

This report compares the energy standards in California's energy efficiency code (Title 24) to ASHRAE Standard 90.1-1999.

EnvStd is a software program that implements the Building Envelope Trade-off Option of ASHRAE/IESNA Standard 90.1-1999/2001.

Copies of the ASHRAE 90.1-2001 Standard and the User's Manual for ASHRAE Standard 90.1-2001 can be ordered from the ASHRAE website.