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Manufactured Homes 

Manufacturing new savings for the region

As the Manufactured Home industry prepares for the first Housing and Urban Development (HUD) code update in 23 years, the region is preparing this market for a new voluntary specification prior to the code change.

The new voluntary specification incorporates advanced building strategies, technologies and design, developed in collaboration with BPA and the manufactured home industry. When the new code goes into effect, local factories will be ready, and continue to provide consumers with a high efficiency option. Over the next 20 years this effort will provide nearly 10 average megawatts of energy efficiency generation for the region.

The manufactured homes market in the Northwest is fairly well-defined:

Manufactured Homes market 

Ultimately, creating this new, above code voluntary standard will accelerate adoption of energy efficient manufactured homes and increase energy savings opportunities for urban and rural lower income customers. 


  • Idaho Residential Code Compliance
    This report describes the compliance of residential new construction in Idaho with the revised state energy code, and amended version of the 2009 International Energy Conservation Code (2009 IECC). This effort to measure compliance has its roots in the 2009 American Recovery and Reinvestment Act (ARRA), which provided funding to states contingent upon a commitment to adopt the latest model energy codes and achieving 90 percent compliance with these codes by the end of the year 2017. Using PNNL checklist methodology, the study team found statewide compliance in Idaho to be 90 percent. The study also examines expected impact on energy consumption due to code compliance.
    PDF, 1.52 MB
  • Residential Building Stock Assessment- Manufactured Homes Characteristics and Energy Use
    This report is the second in a series of reports summarizing the results of the Residential Building Stock Assessment (RBSA). This second report summarizes the characteristics observed onsite and energy use data for the manufactured home component of the RBSA. The scope and magnitude of this representative field study exceeds any previous studies conducted in the Northwest. The final RBSA sample includes households representing 99 utilities: 89 public utilities, seven investor-owned utilities, and three natural gas-only utilities. Of the 99 utilities represented in the overall RBSA study, 52 were represented in the manufactured home sample. The report presents interesting findings on manufactured home characteristics. Manufactured home characteristics reflect a high degree of uniformity across the four states. This uniformity stems from preemptive federal standards and the region’s energy efficiency programs, which use common standards across all factories. While the overall conductive heat loss rates across all vintages of homes show minor differences among the states and climates, the overall heat loss by vintage suggest considerable differences between homes built to federal standards and homes built to regional utility program specifications. Homes built to federal standards average about twice the heat loss and twice the infiltration rate of homes built under utility programs. Other key highlights of the report indicate that: About 70% of manufactured homes use electricity as their primary fuel for space heating, while approximately 11% of homes use gas as their primary heating fuel, approximately 90% of Domestic Hot Water (DHW) tanks are electrically operated, the average number of lamps per home is 35 and the mean saturation of CFLs throughout manufactured homes in the region is about 28% of all lamps, on average manufactured homes have about 1.3 refrigerators and 58% of those refrigerators were manufactured since 2000. Information gleaned from this report can help to establish a bench mark of residential building stock characteristics in the Northwest. Additionally, the results of this study will serve as a basis for planning, forecasting, and program development initiatives by various entities in the region. *Please note when printing we recommend color for better representation of the graphs.
    PDF, 3.42 MB
  • Residential Building Stock Assessment: Single-Family Characteristics and Energy Use
    NOTE: This report was updated December 3, 2012. This report is the first in a series of reports summarizing the results of the Residential Building Stock Assessment (RBSA). The purpose of this report is to obtain a comprehensive view of the current state of residential single-family stock characteristics through an understanding of the distribution of energy-consuming equipment and lighting. The scope and magnitude of this representative field study exceeds any previous studies conducted in the Northwest. The final RBSA sample includes households representing 99 utilities: 89 public utilities, seven investor-owned utilities, and three natural gas-only utilities. The report presents interesting findings on single-family home characteristics. About 57% of homes use natural gas for space heating, 49% of which surveyed report gas heat as their primary heating fuel. Domestic Hot Water (DHW) fuel use is dominated by electric with approximately 55% of the water heating use supplied by electric DHW tanks. Lighting audits indicate that total lamp count, across the region, is approximately 63 lamps per home. This finding compares with the lamp count in the previous 2007 RLW study (RLW 2007a) of 61.5 lamps per home. The mean saturation of CFLs throughout the region is about 25% of all lamps. Information gleaned from this report can help to establish a baseline of residential building stock characteristics in the Northwest. Additionally, the results of this study will serve as a basis for planning, forecasting, and program development initiatives by various entities in the region.
    PDF, 3.90 MB

Conduit Spotlight

Manufactured Homes Interest Group

Conduitnw.org
To learn more, or to follow developments in this market, follow the Manufactured Homes Interest Group on Conduit.

NEEA Team Lead

Neil Grigsby

Sr. Program Manager