Water Heater and Furnace Rules

New 10/28/2026

Find information about the Air District’s Water Heater and Furnace Rules, answers to common questions, and materials explaining adopted requirements and proposed changes.

Know the Facts website
Water Heater Rule Draft Amendments Overview(338 Kb PDF, 2 pgs, posted 7/17/2026)( English | tiếng Việt | Español | 中文 )
Myths vs. Facts(350 Kb PDF, 2 pgs, posted 9/1/2026)( English | tiếng Việt | Español | 中文 )
Frequently Asked Questions: Adopted Amendments to Rules 9-4 and 9-6(607 Kb PDF, 5 pgs, revised 7/14/2026)
Fact Sheet: Proposed Amendments to Rules 9-4 and 9-6(177 Kb PDF, 1 pg, revised 7/14/2026)

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Last Updated: 11/6/2026

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Water Heater and Furnace Rules

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