Southern California\u2019s landmark rule to slash emissions from industrial heating sources just notched a major victory in court.<\/p>\n
The region has some of the worst air quality in the U.S., and the gas-fueled boilers and water heaters that serve its factories and large buildings are a key culprit.<\/p>\n
In 2024, air quality regulators passed a first-in-the-nation rule<\/a> to clean up those dirty sources. Since then, opponents of the measure \u2014 including gas-appliance makers and trade groups for pipefitters and building contractors \u2014 have tried repeatedly<\/a> to quash it. But last week, the U.S. Ninth Circuit Court of Appeals upheld<\/a> the regulation, which is meant to spur a shift toward clean, electrified technologies.<\/p>\n The standard, which took effect in January despite the legal challenge, gradually eliminates emissions of nitrogen oxides (NOx) from more than 1 million gas appliances across Greater Los Angeles.<\/p>\n \u201cIt was a big win for folks who breathe air in Southern California,\u201d Candice Youngblood, a senior attorney for Earthjustice, which intervened to defend the rule in court, said by phone. \u201cThe court fully understood how important this rule is to saving lives.\u201d<\/p>\n The South Coast Air Quality Management District set limits on NOx emissions for light-industrial and commercial boilers, steam generators, and process heaters, as well as residential pool heaters and tankless water heaters. The rules currently affect small units installed in new buildings, but they\u2019ll broaden in scope until covering new high-temperature units installed in existing buildings in 2033. Existing gas equipment must be replaced with zero-emission units once it reaches a certain age, or at the end of its useful life, depending on the appliance.<\/p>\n A spokesperson for the South Coast air district stressed that the rule does not ban gas appliances but rather regulates emissions. The agency said it \u201cremains committed to developing technology-neutral solutions that protect public health, reduce harmful nitrogen oxide (NOx) emissions, and move the region closer to meeting federal air quality standards.\u201d<\/p>\n The measure is ultimately expected to reduce pollution by 5.6 tons of NOx per day \u2014 the same as halving smog-forming emissions from cars in the air district, where more than 17 million people live.<\/p>\n Yet the policy is likely to make an impact well beyond the four-county region. Proponents say a major goal of setting the zero-emission standard is to signal to heat pump manufacturers and other clean technology suppliers to start ramping up production \u2014 which could benefit industrial electrification efforts elsewhere by driving down appliance costs.<\/p>\n The Ninth Circuit\u2019s ruling<\/a> comes as California is pushing to decarbonize all corners of its $4.3 trillion economy. Manufacturing facilities are responsible for more than one-fifth<\/a> of annual greenhouse gas emissions in the state, making them the largest source after transportation.<\/p>\n Last year, Democratic Gov. Gavin Newsom signed a law, Assembly Bill 1280, that expands incentive programs to help manufacturers install industrial heat pumps, thermal storage systems, and other electrified equipment. Utilities and state lawmakers are also developing new electricity rate structures<\/a> that would lower the cost of operating electric appliances.<\/p>\n Such efforts are meant to address the financial challenges that can come with switching to electric appliances in industrial settings. Cleaner alternatives, such as heat pumps and electric boilers, are typically more expensive up front. Electricity is often far more expensive as a fuel than natural gas, especially for large industrial users \u2014 an issue that\u2019s true in California as well in other parts of the country, including the Upper Midwest and Northeast.<\/p>\n If policies can help overcome those hurdles, industrial firms stand to reap significant economic benefits by reducing their exposure to volatile fossil fuel prices, making their operations more efficient, and lowering their energy bills over time. All told, electrifying the entire U.S. industrial sector could generate around $471 billion in total economic growth through 2035, according to a recent analysis<\/a> by the Renewable Thermal Collaborative and the Industrial Heat Pump Alliance.<\/p>\n California is well positioned to reap some of those benefits, given its existing climate policies and high levels of industrial activity. The state could see over $31 billion from the construction, installation, and manufacturing of electrified technologies, as well as indirect effects from growing supply chains, the report said. That\u2019s even accounting for the expected decline in economic activity and job losses from gas-equipment makers and service providers.<\/p>\n The gas industry, however, sees the Golden State\u2019s electrification push as a threat.<\/p>\n Last year, Southern California Gas, the nation\u2019s largest gas-distribution utility, helped sink<\/a> the air district\u2019s separate plan<\/a> to push households away from gas-burning space and water heaters and toward electric heat pumps. Rinnai America, which manufactures gas appliances, has led the legal fight against the zero-emission standards for boilers and water heaters.<\/p>\n In July 2025, a U.S. district court upheld the clean boiler rules, rejecting opponents\u2019 argument that the measure conflicts with the federal Energy Policy and Conservation Act and thus isn\u2019t valid. Rinnai and other plaintiffs have continued to fight the policy, resulting in the Ninth Circuit\u2019s July 2 decision to affirm the district court\u2019s earlier ruling.<\/p>\n The opposition will still have a chance to challenge the policy again, by asking the Ninth Circuit to review its ruling, Youngblood said. In the meantime, Southern California regulators are preparing to propose a new set of rules for larger commercial and industrial systems in the region, which the agency staff aims to present to its board by the end of this year.<\/p>\n","protected":false},"excerpt":{"rendered":"Southern California\u2019s landmark rule to slash emissions from industrial heating sources just notched a major victory in court.…\n","protected":false},"author":2,"featured_media":390316,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[86007,4817,7,9,8,157196,157197,13888,157195,157194,51184,75105,1009,44420],"class_list":["post-390315","post","type-post","status-publish","format-standard","has-post-thumbnail","category-california","tag-air-district","tag-air-quality","tag-california","tag-california-headlines","tag-california-news","tag-commercial-boilers","tag-gas-appliances","tag-greenhouse-gas-emissions","tag-industrial-electrification","tag-industrial-heating","tag-ninth-circuit","tag-nox-emissions","tag-southern-california","tag-water-heaters"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/posts\/390315","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/comments?post=390315"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/posts\/390315\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/media\/390316"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/media?parent=390315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/categories?post=390315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-ca\/wp-json\/wp\/v2\/tags?post=390315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}