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Repeatability, Testing, and Rating of HRV and ERV Technologies using CSA SPE-18:24
Sponsored by the Northwest Energy Efficiency Alliance (NEEA) and conducted by Purdue University, this study evaluated the new CSA SPE-18:24 testing standard for Heat Recovery Ventilators (HRVs) and Energy Recovery Ventilators (ERVs) by testing four commercial products representing major HRV/ERV technologies. The objectives were to assess test repeatability, develop seasonal performance models, evaluate leakage testing…
Commercial + Industrial -
HVAC Thermal Storage for Enhanced Heating & Cooling
Recorded July 14, 2026 – Adding energy storage to buildings not only saves energy, energy costs, water and carbon, but it now gets a boost with substantial federal tax incentives. Presentation covers innovations, challenges, and opportunities in the transition to electrified heating systems using thermal storage. Several system choices will be reviewed from a high-level…
Commercial + Industrial|Residential -
HVAC Installation Contractor Market Research
The Northwest Energy Alliance (NEEA) contracted with Evergreen Economics to conduct qualitative research with residential HVAC contractors across Idaho, Montana, Oregon, and Washington. The study sought to understand how heat pumps are selected, installed, and configured in real-world practice. Through focus groups and in-depth interviews, research examined contractor perspectives on connected commissioning, cold-climate heat pumps, auxiliary electric resistance…
Residential -
Variable Speed Heat Pump Load Flexibility Modeling
Variable speed heat pumps (VSHP) and cold climate air source heat pumps (ccASHP) have gained increased attention for their potential to support utility end-use load flexibility programs while maintaining customer comfort. VSHPs can be programmed to respond to grid signals, adjusting unit energy consumption by varying the compressor and fan speeds. Very limited data are available to quantify VSHP…
Residential -
Home Energy Metering Study Data Standardization and Peak Load Analysis
The Home Energy Metering Study (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. The HEMS Data Standardization and Peak Load Analysis, prepared by Resilient Edge and Linden Clean Energy, draws on data from…
Residential -
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 -
ERV/HRV Ownership and Maintenance Market Research
The Northwest Energy Efficiency Alliance (NEEA) contracted with MarketWise Advising, LLC to conduct market research with commercial HVAC contractors, facilities managers, tenants, and building owners on the maintenance of energy and heat recovery ventilators (ERVs/HRVs) which are a key component of NEEA’s commercial HVAC programs. Data collected in fall 2025 explored perspectives on installing, commissioning, cleaning, and…
Commercial + Industrial -
ResHVAC Dual-Fuel Systems Analysis
Recorded March 10, 2026 – Gas and electric systems can be combined in multiple ways to provide residential space conditioning. Different combinations and control schemes will lead to different operating costs, energy use, and emissions. NEEA conducted an exploratory analysis to identify dual fuel systems with lower operating costs, reduced energy use, and reduced emissions…
Residential -
Heat Pump Equipment Commissioning Systems
Recorded January 26, 2026 – Heat Pump Equipment Commissioning Systems’ use of cellular phone apps, combined with wireless tool connectivity to the HVAC system, is enabling HVAC technicians to more easily understand if the system they are installing is set-up and operating correctly. In this special session held on Monday, January 26th, representatives from Measure…
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Low-Load Efficient Heat Pump Investigation: 2020 – 2025 Summary Report
The Northwest Energy Efficiency Alliance’s (NEEA) Advanced Heat Pump program is working to transform the market for high efficiency residential heat pumps. A key focus for the program is improving product differentiation so consumers and industry professionals can easily identify systems that deliver cost-effective performance to make more informed purchase decisions. One important differentiator the…
Residential