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

Leadership Meetings | Board of Directors

Apr 08, 2026

Watch Livestream of Virtual Spring Board of Directors Meeting

The NAHB Board of Directors will convene virtually on Tuesday, April 14, at 10 a.m. ET. A livestream is available on nahb.org for NAHB members and HBA executive officers who would like to observe the meeting.

Workforce Development

Apr 08, 2026

Tuition-Free Alabama Trades Academy Backed by Key Community Support

As part of a statewide effort to expand trades education, the Home Builders Association of Metro Mobile (HBAMM) launched the South Alabama Homebuilding Academy (SAHA), an eight-week, tuition-free program to prepare adults for careers in residential construction.

View all

Latest Economic News

Economics

Apr 07, 2026

Rising Rates Weigh on Mortgage Activity

Mortgage application activity decreased month-over-month as the 30-year fixed mortgage rate rose. The Mortgage Bankers Association’s (MBA) Market Composite Index, a measure of total mortgage application volume, declined 4.3% from February on a seasonally adjusted basis but remained 30.8% higher than a year earlier.

Economics

Apr 06, 2026

Which States and Construction Trades Depend the Most on Immigrant Workers?

Immigrants’ share of the construction workforce reached a record high in 2024, with foreign-born workers accounting for more than a quarter of the industry’s labor force (26.3%). The share is even higher among construction trades, for which one in three craftsmen is foreign-born.

Economics

Apr 03, 2026

Job Growth Rebounds in March

The U.S. labor market showed signs of a modest rebound in March following a weak February, as payroll employment increased and the unemployment rate edged down to 4.3%. Job growth was led by healthcare, construction, and transportation and warehousing.