Water Heater and Furnace Rules

New 2026/10/28

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(328 Kb PDF, 2 pgs, posted 2026/7/17)( English | Tagalog | tiếng Việt | Español )
Myths vs. Facts(408 Kb PDF, 2 pgs, posted 2026/9/1)( English | Tagalog | tiếng Việt | Español )
Frequently Asked Questions: Adopted Amendments to Rules 9-4 and 9-6(607 Kb PDF, 5 pgs, revised 2026/7/14)
Fact Sheet: Proposed Amendments to Rules 9-4 and 9-6(177 Kb PDF, 1 pg, revised 2026/7/14)

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Last Updated: 2026/11/6

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Water Heater and Furnace Rules

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