Heat Pump Water Heaters

Related Resources

• 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
• Northern Climate Specification
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• 2011 Water Heater Market Update, Appendices
  Appendices to 2011 Water Heater Market Update.
  PDF, 3.95 MB