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Residential Heat Pump Water Heater Qualified Products List
The Residential Heat Pump Water Heater (HPWH) Qualified Products List (QPL) contains information on Residential HPWH products that meet the Advanced Water Heating Specification requirements. These products are found in Single Family or low rise multifamily (in residential dwelling units). Please contact us with any questions. Updated as of 2026
Residential -
Dual-Fuel Hybrid Residential Water Heater – Technical and Laboratory Evaluation
The Northwest Energy Efficiency Alliance (NEEA) co-funded a laboratory study conducted by GTI Energy to evaluate the Navien 120V Residential Dual-Fuel Water Heater. This novel product features multiple on-board operating modes and integrates an industry- first 120-Volt (V) electric heat pump paired with either a 40- or 60-kBTU/h natural gas condensing backup burner. The research…
Natural Gas|Residential -
Commercial HPWH Qualified Products List
The Commercial/Multifamily HPWH Systems QPL contains information on Commercial and Multifamily products that meet the Advanced Water Heating Specification requirements. These products generally serve more than four dwelling units or a commercial load (as defined in the specification). Products can be integrated or split systems. Please contact us with any questions. Updated as of 2026 – Version…
Commercial + Industrial -
End-Use Load Research Home Energy Metering Study – Final Report
This is the final report for the residential End-Use Load Research (EULR) project Home Energy Metering Study (HEMS), conducted by Evergreen Economics. HEMS collected one-minute, circuit-level energy use data from more than 400 homes across the Northwest between 2018 and 2026, resulting in a dataset of more than 14 billion data points. This report examined…
Residential -
Heat Pump Water Heater Market Progress Evaluation Report #8
The Northwest Energy Efficiency Alliance (NEEA) contracted with NMR Group, Inc. to conduct the eighth Market Progress Report (MPER) for its Heat Pump Water Heater (HPWH) program. The report finds that the program has contributed greatly to setting the groundwork for ongoing and widespread HPWH adoption. Between 2021 and 2024, HPWH market share in the…
Residential -
AWHS Residential Chapter Revision
NEEA welcomes additional feedback on this draft revision of the residential AWHS through August 31, 2026.
Residential -
Commercial HPWH Product Assessment Datasheet (PADS)
For commercial heat pump water heaters (HPWH) to be considered for inclusion on the Qualified Products List, HPWH product vendors must complete and submit a Product Assessment Datasheet (PADS). The PADS outlines compliance with the requirements within NEEA’s “Advanced Water Heating Specification.”
Commercial + Industrial -
Residential HPWH Product Assessment Datasheet (PADS)
For residential heat pump water heaters (HPWH) to be considered for inclusion on the Qualified Products List, HPWH product vendors must complete and submit a Product Assessment Datasheet (PADS). The PADS outlines compliance with the requirements within NEEA’s “Advanced Water Heating Specification.”
Residential -
High Efficiency Gas Water Heater Research
In the spring of 2024, NEEA contracted with ILLUME Advising to improve understanding of the current residential gas water heater market, identify purchase motivators for people with high-efficiency gas equipment, and see if and where there is a market for a commercialized gas heat pump water heater (GHPWH). NEEA hypothesized that there was potential to…
Natural Gas|Residential -
Market Research on Existing Water Heaters in Select Commercial Buildings, Final Report
In the spring of 2024, the Northwest Energy Efficiency Alliance (NEEA) contracted with Lieberman Research to conduct a market research study to better understand gas and electric water heating systems across a selection of commercial buildings in the Northwest, with particular focus on the gas market. These buildings included restaurants, lodging facilities and non-mixed use…
Commercial + Industrial|Natural Gas