ICC Board Agrees with NAHB on Codes Appeal

Codes and Standards
Published

The ICC Board of Directors Wednesday agreed with NAHB's appeal related to a proposed change to the International Energy Conservation Code (IECC) that dealt with the efficiency of water heaters. NAHB and others argued, and ICC agreed, that the changes would have preempted federal law or would have exposed adopting jurisdictions to potential litigation related to the proposed requirements.

The ICC Board decided to reject RE126-19 (and RE107-19) on the basis that "potentially preempted provisions in the I-Codes is inconsistent with the spirit, intent and mission of the Code Council." In addition to NAHB, the American Gas Association, American Public Gas Association and American Heating Refrigeration Institute filed similar appeals.

RE126-19 was a proposal submitted by the National Resources Defense Council that put additional requirements on water heating products. NAHB and the other appellants believed the requirements were inconsistent with the National Appliance and Energy Conservation Act (NAECA) by attempting to institute requirements inconsistent with federal law and would put ICC and adopting entities at risk of legal action should the proposed requirements be instituted.

While the ICC disagreed with one point in the appeal that its development process was violated, the Board did agree that incorporating requirements contrary to federal law would be problematic. Accordingly, the Board determined that the approved language from RE107-19 and RE126-19 will not be included in the 2021 International Residential Code (IRC) or IECC.

This was the first of three rulings by the Board on NAHB appeals. The final ICC Board decision on the last two appeals related to scope and intent and the codes development process and voting eligibility are expected around mid-October.

For more information about the codes appeals, visit nahb.org.

Subscribe to NAHBNow

Log in or create account to subscribe to notifications of new posts.

Log in to subscribe

Latest from NAHBNow

Student Chapters | Workforce Development

Dec 18, 2025

NAHB Welcomes 24 New Student Chapters to Help Build the Future

NAHB is proud to welcome 24 new student chapters in 2025. These chapters were created to enhance students' educational experiences, increase their exposure to the home building industry and connect them with their local HBAs.

Advocacy

Dec 17, 2025

House Panel Approves Major Housing Package

In a move that provides momentum for Congress to enact major housing legislation in early 2026, the House Financial Services Committee this week approved the Housing for the 21st Century Act. This bipartisan housing package takes much-needed steps toward addressing our nation’s critical lack of housing.

View all

Latest Economic News

Economics

Dec 16, 2025

Job Market Shows Signs of Cooling in November

In November, job growth slowed, and the unemployment rate rose to 4.6%, its highest level in four years. At the same time, job gains for the previous two months (August and September) were revised downward. The November’s jobs report indicates a cooling labor market as the economy heads into the final month of the year.

Economics

Dec 15, 2025

Builder Sentiment Inches Higher but Ends the Year in Negative Territory

Builder confidence inched higher to end the year but still remains well into negative territory as builders continue to grapple with rising construction costs, tariff and economic uncertainty, and many potential buyers remaining on the sidelines due to affordability concerns.

Economics

Dec 11, 2025

Homeownership Rate Inches Up to 65.3%

The latest homeownership rate rose to 65.3% in the third quarter of 2025, according to the Census’s Housing Vacancy Survey (HVS).