This project describes market conditions, assesses barriers such as product availability, and presents options to increase participation in PG&E's residential water heater program.

Prepared by:  Pacific Gas and Electric Company

Published:  November 15, 2012

This Building America Measure Guideline is intended for builders, contractors, homeowners, and policy-makers. While HPWHs promise to significantly reduce energy use for DHW, proper installation, selection, and maintenance of HPWHs is required to ensure high operating efficiency and reliability. This document is intended to explore the issues surrounding HPWHs to ensure that homeowners and contractors have the tools needed to appropriately and efficiently install HPWHs.

Prepared by:  National Renewable Energy Laboratory

Published:  February 2012

The objective of the research is to forecast baseline heat pump water heater sales in the Northwest -- Idaho, Montana, Oregon, and Washington. Specifically, we estimated the unit sales and installations of heat pump water heaters meeting the Tier 1 and Tier 2 Northern Climate Specification, above and below 55 gallons, in absence of utility incentive programs.

Prepared by:  Northwest Energy Efficiency Alliance

Published:  October 23, 2014

Following the survey of existing activities, the report presents conclusions through a series of recommended strategies to accelerate market uptake of HPWHs in the Northeast and Mid-Atlantic region.

Prepared by:  Northeast Energy Efficiency Partnerships

Published:  December 2012

The Northwest Energy Efficiency Alliance (NEEA) engaged Evergreen Economics 2015 to conduct the second Market Progress Evaluation for NEEA’s Heat Pump Water Heater (HPWH) Initiative, also known as the Hot Water Solutions Program.

Prepared by:  Northwest Energy Efficiency Alliance

Published:  August 23, 2016

The following HPWH performance data come from an NRDC-commissioned analysis conducted by Ecotope in June 2016. Ecotope conducted a set of simulations to estimate the energy use of Heat Pump Water Heaters (HPWH) across the United States.

Prepared by:  Ecotope

Published:  June 2016

The CEE Overview of Heat Pump Water Heater Programs in the United States and Canada summarizes programs active in 2016 that were designed to promote the purchase and installation of efficient heat pump water heaters (HPWHs). The 56 CEE members included in this year's Program Overview span 33 US states, the District of Columbia, and one Canadian province. They collectively serve more than 60 million residents.

Prepared by:  Consortium for Energy Efficiency

Published:  October 2016

This project seeks to answer the technical questions associated with residential heat pump water heater (HPWH) placement, design, and performance using lab testing of particular HPWH products that are likely to be available in the residential market.

Prepared by:  Bonneville Power Administration

Published:  January 25, 2010

The report describes laboratory testing and modeling exercises performed to assess potential heat pump water heater (HPWH) energy savings in the Pacific Northwest. Three integrated HPWH models, pairing two electric resistance elements with a tank-mound heat pump, were thoroughly investigated: the AO Smith Voltex, the GE GeoSpring, and the Rheem EcoSense.

Prepared by:  Bonneville Power Administration

Published:  November 11, 2011

The purpose of this study is to analyze the economics of a range of advanced electric water heating load control and energy efficiency strategies that utilities and demand response aggregators could implement to reduce total system costs.

Prepared by:  The Brattle Group

Published:  January 2016