Energy codes allow for energy efficiency improvements in buildings and homes in our communities. Check out our collection of energy codes resources below.

The Latest

Cost Effectiveness of the Residential Provisions of the 2021 IECC

Following U.S. Department of Energy cost effectiveness certification of the 2021 International Energy Conservation Code (IECC), the National Association of Homebuilders (NAHB) commissioned the Home Innovation Research Labs (HIRL) to conduct an independent cost analysis of the 2021 IECC. The report, 2021 IECC Residential Cost-Effectiveness Analysis 3 (HIRL report), was published in June 2021, and … Continued

Insulation Industry Opportunity Study

This report summarizes a study on the energy and emissions impacts and economic benefits of code-compliant insulation in the residential, commercial, and industrial building sectors.

2024 IECC Process

This resource provides an overview of the 2024 IECC development process.