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A costly change could hit Bay Area homes
Imagine your water heater suddenly breaks, and replacing it is no longer as simple as buying another gas model. That is the situation many Bay Area homeowners could face as local air regulators move toward zero-NOx water heaters.
The rule targets new water heaters installed after the current gas units reach the end of their lives. Most compliant options are electric, especially heat pump water heaters. The change is aimed at cutting pollution, but the higher upfront cost has sparked questions about affordability and how the policy should work.
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The rule focuses on replacements
The policy does not require homeowners to rip out working gas water heaters right now. Instead, it applies when covered equipment is sold or installed after the compliance date, including when an existing unit needs replacement.
The first phase covers smaller water heaters, which are commonly found in homes. The Air District says these units generally serve single-family homes and small multifamily properties. The current rule sets a 2027 start, while proposed changes would move that date to January 2028.
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Heat pumps are the main electric option
Heat pump water heaters work differently from traditional gas models. Instead of burning fuel to create heat, they use electricity to move heat from the surrounding air into the water…