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Ductless Heat Pumps: 2025 Market Diffusion Evaluation #3
In the fall of 2025, the Northwest Energy Efficiency Alliance (NEEA) contracted with OWL Research Partners to conduct the third Market Diffusion Evaluation, formerly known as Long-Term Monitoring and Tracking (LTMT), of its Ductless Heat Pump (DHP) program. Since transitioning from active market development in 2020, NEEA has been monitoring the DHP market for signs…
Heating and Cooling|Residential -
Energy-Efficient Technology in Cold Weather – Bridger View On-Site Research
The Northwest Energy Efficiency Alliance (NEEA) contracted with JG Research & Evaluation, LLC in the fall of 2021 to conduct a study of the new Bridger View housing development in Bozeman, Montana. The purpose of the study was to better understand how a cold weather climate may influence the adoption and performance of various technologies…
New Construction|Residential|Residential Buildings -
Ductless Heat Pumps 2022 Long-Term Monitoring and Tracking Report
This is the second Long-term Monitoring and Tracking (LTMT) evaluation of the Northwest Energy Efficiency Alliance’s (NEEA) Ductless Heat Pumps (DHPs) Market Transformation program. NEEA actively worked to accelerate adoption of DHPs from 2008 to 2020. The objective of this LTMT study was to gauge adoption of DHPs by the Northwest’s residential HVAC market, specifically…
Heating and Cooling|Residential -
Study of Influences on Northwest Variable Speed Heat Pump Adoption
The Northwest Energy Efficiency Alliance’s (NEEA) Variable Speed Heat Pump (VSHP) program contracted with Lieberman Research to conduct qualitative market research about influences on ducted VSHP market adoption in the Northwest. Research objectives included 1) Determining influences on central ducted VSHP sales in the Northwest, including direct and indirect influences from NEEA’s Northwest Ductless Heat…
Heating and Cooling|Integrated Systems|Residential -
Ductless Heat Pumps 2020 Long-Term Monitoring and Tracking Report
Since 2008, the Northwest Energy Efficiency Alliance (NEEA) has worked to accelerate the adoption of Ductless Heat Pumps (DHPs) to displace electric resistance heating in existing Northwest homes. In 2020, the alliance’s DHP program transitioned to Long-Term Monitoring and Tracking (LTMT). This report is the first LTMT study for the DHP program and is intended…
Heating and Cooling|Residential -
Maximizing Mini-Split Performance Report
The Northwest Energy Efficiency Alliance (NEEA) contracted with Sustainabilist to review and document ductless heat pump (DHPs or mini-split heat pumps) research and evaluations conducted over the past 15 years. The report explores why utility programs are not achieving the level of savings that were achieved in pilot programs and field tests and presents a…
Heating and Cooling|Products|Regional Studies|Residential|Residential Buildings|Technology -
2019 Alliance Cost Effectiveness Model Review for Ductless Heat Pumps
The Northwest Energy Efficiency Alliance (NEEA) contracted with Ecotope, Inc., to review the Alliance Cost Effectiveness (ACE) model for the Ductless Heat Pump (DHP) program. For the report, Ecotope focused on reviewing: 1) how the ACE model incorporates recent Regional Technical Forum measure updates for DHPs; 2) the appropriateness of the ACE model’s approach to…
Heating and Cooling|Residential