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Mobile Home Efficiency Program - Enhancing Energy Savings

Implementing an efficiency program to treat 5,000 units in 2010 and 2011. Program includes duct repair levels and replacement options, modeled on successful previous initiatives. Evaluation overview emphasizes impact and billing analysis. Analysis details include site data collection specifics and typical analysis results.

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Mobile Home Efficiency Program - Enhancing Energy Savings

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  1. PSE Mobile Home Efficiency Program Treat 5,000 units in 2010 and 2011 Projected Composition: 4,700 electric forced air 400 with AC 300 with gas heat

  2. Program Measures Primary propane or wood heat customers ineligible

  3. 3 Increasing Levels of Duct Repair • Duct Seal Level 1 - Prescriptive Visual Sealing including visual check of crossover, with pressurization QC check • Duct Seal Level 2 – If level 1 pressurization check shows remaining high leakage, locate and seal air leaks while under pressurization • Duct Seal Level 3 – Replace ducts that are beyond repair

  4. Results of Similar ProgramModeled on Snohomish PUD Mobile Home Program w/1,600 participants Based on billing analysis of 572 sites. Standard deviation about 2000 kWh/yr.

  5. Proposed Evaluation Overview Impact Evaluation Billing analysis on all participant sites, one year pre/post data Multi-fuel sites use EZ SIM, all-electric sites use regression model Sites stratified by treatment classification: • No treatment • Prescriptive duct sealing • 3 levels of duct sealing and repair Control group of 500-1,000 sites drawn from past participants with same pre/post program years Control group considered important in current economic climate

  6. Analysis Details (1) SITE DATA COLLECTION • Site Address • Site utility reference number electric, gas • Site analyses internal reference number • Single, double or triple wide • Site contractor • Site auxiliary heat • Site conditioned square footage • Site treatment date • Site measures applied and removed • Site pressurization measurements • Site showerhead flow • Site special duct repair indicator and measurements

  7. Analysis Details (2)Typical analysis results – results from the more complex dual fuel analysis are illustrated

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