Prescriptive Approach - Commercial

The state maps assign all locations within the 50 United States to specific climate zones. The prescriptive packages consist of tables containing building envelope requirements based on climate zone for codes based on the ASHRAE Standard 90.1-1989 (IECC 1998 and 2000). Reference Guides for this approach are also available.

To print or download a climate zone map and prescriptive packages for a given state, click on the desired state from the map below, or select from the state list. The maps and packages are available in Adobe Portable Document Format (PDF). Download Acrobat Reader.

Alternatively you may download all state climate zone maps (PDF 1.7 MB) or download all the prescriptive packages (PDF 172 KB).