Analysis for Previous Commercial Codes
The following national analyses are available for previous editions of ASHRAE Standard 90.1:
- National Cost Effectiveness of Standard 90.1-2013
- Cost Analysis of Standard 90.1-2010 compared to 90.1-2007
- Energy Savings Analysis of Standard 90.1-2010 compared to 90.1-2007 and 90.1–2004
- Energy Savings Analysis of the 2015 IECC compared to the 2012 IECC
- Energy Savings Analysis of the 2012 IECC compared to the 2009 and 2006 IECC
The tables below contains additional state-level analysis:
| Alabama | Alaska | Arizona | Arkansas |
| California* | Colorado | Connecticut | Delaware |
| District of Columbia | Florida | Georgia | Hawaii |
| Idaho | Illinois | Indiana | Iowa |
| Kansas | Kentucky | Louisiana | Maine |
| Maryland | Massachusetts | Michigan | Minnesota |
| Mississippi | Missouri | Montana | Nebraska |
| Nevada | New Hampshire | New Jersey | New Mexico |
| New York | North Carolina | North Dakota | Ohio |
| Oklahoma | Oregon* | Pennsylvania | Rhode Island |
| South Carolina | South Dakota | Tennessee | Texas |
| Utah | Vermont | Virginia | Washington* |
| West Virginia | Wisconsin* | Wyoming | |
| *The structure of this state's code differs substantially from that of ASHRAE 90.1 or the IECC equivalent. | |||
| Alabama | Alaska* | Arizona* | Arkansas |
| California* | Colorado | Connecticut | Delaware |
| District of Columbia | Florida* | Georgia | Hawaii* |
| Idaho* | Illinois* | Indiana* | Iowa |
| Kansas* | Kentucky | Louisiana* | Maine* |
| Maryland* | Massachusetts | Michigan* | Minnesota* |
| Mississippi* | Missouri* | Montana | Nebraska |
| Nevada* | New Hampshire* | New Jersey | New Mexico* |
| New York | North Carolina | North Dakota* | Ohio* |
| Oklahoma | Oregon* | Pennsylvania* | Rhode Island |
| South Carolina | South Dakota* | Tennessee* | Texas |
| Utah | Vermont* | Virginia | Washington* |
| West Virginia* | Wisconsin | Wyoming* | |
| *Cost Analysis not planned for this state. | |||