Fact Sheets

Fact Sheet: Residential Heat Pump Water Heating

April 8, 2025

Residential heat pump water heaters (HPWHs) are two to three times more efficient than conventional gas and electric resistance water heating options. While HPWHs have been available as energy-efficient alternatives that cut greenhouse gas (GHG) emissions – and improve local air quality – for the past 15 years, they represent less than 1% of the water heaters sold in California. According to contractors and installers, however, small increases are starting to happen.

Advancement Plan|Commercial|Heat Pumps|Residential|Water Heating

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The California Market Transformation Administrator (CalMTA) develops and manages market transformation initiatives in the state to reduce energy use and reduce greenhouse gas (GHG) emissions.

CalMTA seeks to help meet California’s energy efficiency and decarbonization goals by accelerating adoption of energy-efficient products and practices through market transformation. Market transformation is a proven strategic process of intervening in a market to create lasting change.
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