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Project Info ACTIVE Project Title

Field Evaluation of Small Wall Mounted HPWHs

Project Number ET20SCE1070 Organization SCE End-use Whole Building Sector Commercial Project Year(s) 2021 - 2023
Field evaluation, in three commercial sites, of a small wall-mounted heat pump water heater. This follows an EPRI lab evaluation of the same product. This equipment is not currently available in voltages employed in the United States, and isn't UL Listed. Research questions: • Can these products meet U.S. residential and light commercial water heating needs, or are small modifications needed to provide competitive performance (e.g., larger resistance element)? • What are site-specific constraints that must be overcome? • How do hot water usage profiles vary (e.g., by time of day, by household occupancy, single family vs multi family, etc.) • How will occupants react to a more efficient water heater with less storage capacity and smaller electric element? Will performance be considered acceptable? • Are costs for a contractor-installed mixing valve of value in order to provide a higher level of storage energy to help meet hot water loads?
  • Pacific Gas & Electric Company logo
  • Southern California Edison Company logo
  • Southern California Gas Company logo
  • San Diego Gas & Electric Company logo
  • Sacramento Municipal Utility District logo
  • Los Angeles Department of Water and Power logo
  • CEC logo

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The ETCC is funded in part by ratepayer dollars and the California Statewide Emerging Technologies Program under the auspices of the California Public Utilities Commission. The municipal portion of this program is funded and administered by Sacramento Municipal Utility District and Los Angeles Department of Water and Power.