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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…
Residential -
Investigation of Airtightness and Ventilation Interactions in New Multifamily Buildings – Phase III
The Northwest Energy Efficiency Alliance (NEEA) contracted with Ecotope, Inc. to determine the negative impact that levels of compartmentalization, the measure of tightness of total envelope of an individual apartment including interior and exterior walls, could have on the performance of exhaust appliances. The study identifies the total static pressure needed by modern exhaust fans,…
Residential -
Investigation of Airtightness and Ventilation Interactions in New Multifamily Buildings – Phase II
The Northwest Energy Efficiency Alliance (NEEA) contracted with Ecotope, Inc. to examine the effects of increased envelope airtightness (a measure of air infiltration through building components such as walls, windows, doors, ceilings, and floors) on the performance of multifamily buildings. Driven by recent Energy Code changes in Washington State, this study seeks to determine the…
Residential -
Combi System Field Study
The Northwest Energy Efficiency Alliance (NEEA) contracted with Energy 350 and ILLUME Advising, LLC to conduct field testing to demonstrate performance of combi systems in cold northwest climates and identify potential barriers to market adoption. According to results from this field study, combi systems, also known as combination water and space heating systems, save more…
Natural Gas|Residential -
2018 Washington Residential Code Energy Savings Analysis
The Northwest Energy Efficiency Alliance (NEEA) contracted Ecotope, Inc to estimate the energy savings of the 2018 Washington State Energy Code residential provisions (WSEC-R) compared to the 2015 and 2006 WSEC-R codes, as well as the 2018 International Energy Conservation Code (IECC). The 2018 WSEC-R code was developed by Washington State Building Code Council and…
Residential -
Laboratory Assessment of Rheem Generation 5 Series Heat Pump Water Heaters
The Northwest Energy Efficiency Alliance (NEEA) contracted with Ecotope, Inc., Cascade Engineering Services, Inc. and Larson Energy Research to conduct a laboratory assessment of Rheem’s next generation (Generation 5 or “Gen5”) heat pump water heaters (HPWH). The water heater series consists of two distinct lines: Premium/Plus and Builder, each aimed at different market segments. Each line includes…
Residential -
Coming Clean: Revealing Real-World Efficiency of Clothes Washers
The Northwest Energy Efficiency Alliance (NEEA) contracted with Kannah Consulting to better understand the real-world energy efficiency of consumer clothes washers. The research focused on washers’ impact on the energy use of the clothes dryer (drying energy). The project had two key objectives: 1) enable updates to regional unit energy consumption (UEC) and unit energy…
Residential -
2017 Oregon Residential Specialty Code Energy Efficiency Impact Assessment
The Northwest Energy Efficiency Alliance (NEEA) contracted with Ecotope, Inc. to quantify the energy use, energy savings and incremental costs for residential codes in Oregon. Ecotope compared the 2017 and 2014 residential energy code for single-family (including townhomes) and low-rise multifamily units, defined as 3-stories or less. Study objectives include: The study analysis estimated incremental…
Residential -
Air Cleaner Unit Savings Review
As part of its Retail Products Portfolio (RPP) program, the Northwest Energy Efficiency Alliance (NEEA) implements a variety of strategies to speed adoption of energy-efficient consumer products. In 2019, NEEA discontinued midstream incentives for air cleaners while engaging actively in the U.S. Environmental Protection Agency’s (EPA) specification revision process. Because RPP program sponsors only receive…
Residential -
Air Cleaner Specification and Baseline Assessment Review
As part of its Retail Products Portfolio (RPP) program, the Northwest Energy Efficiency Alliance (NEEA) works collaboratively with other energy efficiency stakeholders to affect the advancement of ENERGY STAR specifications for consumer products. In July through October 2020, NEEA contracted with Apex Analytics to conduct an Air Cleaner Specification and Baseline Assessment Review. The objectives…
Residential