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Gas-Fired Absorption Heat Pump: Hybrid System Approach Field Study
Stone Mountain Technologies Inc. (SMTI) has developed a residential-sized gas-fired absorption heat pump designed for broad residential and commercial applications. These prototype systems were tested in the Chicago region at one multifamily building and two single-family homes, either replacing or supplementing existing natural gas heating equipment. The multifamily demonstration, supported by a boiler manufacturer and…
Commercial Buildings|Heating and Cooling|Natural Gas|Residential|Residential Buildings -
Oregon Residential Code Compliance Evaluation
The Northwest Energy Efficiency Alliance (NEEA) contracted with Industrial Economics, Incorporated (IEc) and its subcontractors to conduct a residential code compliance evaluation that examined new construction single family homes built under the 2021 Oregon Residential Specialty Code (ORSC). The evaluation looked at whole-home and measure-level compliance with the code, opportunities to increase compliance with the…
New Construction|Residential|Residential Buildings -
Q3 2025 RETAC Meeting Notes
The Regional Emerging Technology Advisory Committee (RETAC) held their third quarterly meeting of 2025 on September 24th. Topics included a committee “round robin” discussion of energy efficiency initiatives within the region, and an update on emerging technology projects from Puget Sound Energy.
Commercial + Industrial|Commercial Buildings|Consumer Products|Heating and Cooling|Natural Gas|Products|Residential|Residential Buildings|Technology -
Q3 2025 RETAC Agenda Packet
The Regional Emerging Technology Advisory Committee (RETAC) will hold their third quarterly meeting of 2025 on September 24th. Topics include a committee “round robin” discussion of energy efficiency initiatives within the region, and an update on emerging technology projects from Puget Sound Energy.
Commercial + Industrial|Commercial Buildings|Consumer Products|Heating and Cooling|Natural Gas|Products|Residential|Residential Buildings|Technology -
Dual-Fuel Heat Pump Systems Analysis
The Northwest Energy Efficiency Alliance (NEEA) is exploring the potential of dual-fuel heat pumps for residential heating and cooling in the Northwest. To support this work, NEEA contracted with Larson Energy Research to develop a model that compares various technologies. The study used 2022 Residential Building Stock Assessment data to evaluate current and emerging systems,…
Heating and Cooling|Natural Gas|New Construction|Products|Regional Studies|Residential|Residential Buildings|Technology -
Dual-Fuel HVAC White Paper
Advancing dual-fuel residential HVAC to achieve a reliable, resilient and affordable energy future. North America’s energy system stands at a pivotal juncture, necessitating innovative and multifaceted approaches to support future resilience and reliability. Integrating natural gas and electricity can be a flexible and resilient solution to meeting the growing needs of our energy system. Dual-fuel…
Commercial + Industrial|Commercial Buildings|Heating and Cooling|Natural Gas|Residential|Residential Buildings -
Code Savings Technical Assumptions Review
The Northwest Energy Efficiency Alliance (NEEA) contracted with Energy 350 to review three assumptions underlying the savings it reports for updates to energy codes for new construction buildings: Energy 350 found that most assumptions NEEA made to adjust code savings analyses were valid. The review team noted several areas where NEEA could improve assumptions either…
Commercial + Industrial|Commercial Buildings|Natural Gas|New Construction|Residential|Residential Buildings -
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|New Construction|Residential|Residential Buildings -
Montana Residential Code Compliance Evaluation
The Northwest Energy Efficiency Alliance (NEEA) contracted with Industrial Economics, Incorporated (IEc) to conduct a residential code compliance evaluation in Montana that examined new construction single family homes built under the International Energy Conservation Code (IECC) 2018 and 2021 with Montana amendments. The main study objective was to assess statewide compliance with the 2018 and…
New Construction|Residential|Residential Buildings