7/16/2013 Efficiency Maine Residential Direct Install Initiative Air Sealing Promotion Results, Statistics and Findings July 11 th 2013 Residential Direct Install (RDI) “Air Sealing Promotion” Original objectives: � Eliminate barriers of entry into weatherization by larger segment of Maine households. � Promote financing of larger scope weatherization projects by addressing key issues in Maine housing stock. � Demonstrate immediate benefits of energy assessments in addressing “lowest hanging energy fruit” in homes. Startup milestones: � Launched in April 2012 with an incentive level of $300 per unit with slow uptake. 170 units completed in 5 months. � Incentive increased to $600 per unit in September 2012 generated exponential growth of activity in auditing and weatherization. 1100 units completed by end of December 2 2012. 1
7/16/2013 Residential Direct Install (RDI) “Air Sealing Promotion” Phase 1: “Blower Door Driven Air Sealing” The RDI Air Sealing Promotion has been advertised as a limited-time discount on air sealing and currently involves the following components and steps for participants: 1. Home energy audit, including a blower door test, is performed by a Participating BPI certified Energy Auditor 2. At least six hours of air sealing and/or insulation work are completed by either the auditor or another registered vendor. 3. Contractor performs post project blower door test to measure the new air flow in the home and project energy savings. 3 Residential Direct Install (RDI) “Air Sealing Promotion” Distribution of projects has been statewide from York to Fort Kent. 70 participating contractor firms providing range of services and project scopes. Significant activity in pockets near most active contractors. 4 2
7/16/2013 Residential Direct Install (RDI) “Air Sealing Promotion” 5600 5400 As of 7/1/2013 5200 5000 4800 Completions 5306 4600 4400 4200 4000 Average SqFT 1599 3800 3600 3400 Average Year Built 1944 3200 3000 Average Occupancy 2.6 2800 2600 Ave PRE CFM50# 3263 2400 $300 2200 increased 2000 Ave POST CFM50# 2752 to $600 1800 1600 Average Reduction CFM50 511 1400 1200 Percent air flow reduction 16% 1000 800 600 Total job hours supported 58,535 400 200 Average Hours per project 11.0 0 Average total project cost $ 826 5 Air Sealing Promotion Combustion safety verified Programmable thermostat Weatherstripping doors/windows Insulation of foundation sills Low flow shower head Tank wrap Insulating piping Air sealing plumbing chases Air sealing/insulating duct work Air sealing chimney chase Air sealing in attic/hatch Air sealing in basement/bulkhead 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 6 # of homes where measures were completed 3
7/16/2013 Air Sealing Promotion Recommended Improvement Measures and Upgrades Wind Power Solar Thermal Solar PV Refrigerator Duct Sealing Air Sealing Windows Installed/Replaced Floor/Foundation Insulation Wall Insulation Duct Insulation Attic Insulation Ventilation System Air Conditioner Heat Pump Water Heater Wood/Pellet/Gas Stove Boiler Furnace 7 0 500 1000 1500 2000 2500 3000 # of homes where measures were recommended Residential Direct Install (RDI) “Air Sealing Promotion” Participating Home Decade of Construction 700 600 Maine has among 500 the oldest housing stocks in the 400 country. 300 200 100 0 8 Newest ----------------- � Oldest 4
7/16/2013 Residential Direct Install (RDI) “Air Sealing Promotion” Ave airflow reduction CFM50 by built decade Greater savings can be 900 found in short amount of time on oldest 800 homes, but savings 700 are significant even in newest part of housing 600 stock. 500 400 300 200 100 0 2010 2000 1990 1980 1970 1960 1950 1940 1930 1920 1910 1900 1890 1880 1870 1860 1850 9 Decade Homes Built Residential Direct Install (RDI) “Air Sealing Promotion” Ratio of airflow to living area 3.0 2.5 Air flow is required for good indoor air 2.0 quality, but any more flow than is needed, is wasted heat in 1.5 winter. Above roughly ratio of 1.0 1.0 is wasted heat airflow 0.5 “Who left the window open?” 0.0 2010 2000 1990 1980 1970 1960 1950 1940 1930 1920 1910 1900 1890 1880 1870 1860 10 5
7/16/2013 Residential Direct Install (RDI) “Air Sealing Promotion” ratio of airflow to living area - new houses Even looking at the 4.5 best and newest 4.0 portion of the housing stock – 3.5 huge amount of 3.0 variation occurs in terms of tightness. 2.5 2.0 1.5 Above roughly 1.0 is wasted 1.0 heat airflow 0.5 0.0 2012 2012 2012 2012 2011 2011 2010 2010 2010 2010 2009 2009 2009 2009 2009 2008 2008 2008 2008 2007 2007 2007 2007 2007 2007 2007 2006 2006 2006 2006 2006 2006 11 RDI impact on newest houses 2012 – 2006 built PRE leakage ratio POST leakage ratio 4.50 4.50 4.00 4.00 3.50 3.50 3.00 3.00 2.50 2.50 2.00 2.00 1.50 1.50 1.00 1.00 0.50 0.50 0.00 0.00 2012 2012 2012 2011 2011 2010 2010 2009 2009 2009 2008 2008 2008 2007 2007 2007 2007 2006 2006 2006 2006 2012 2012 2012 2011 2011 2010 2010 2009 2009 2009 2008 2008 2008 2007 2007 2007 2007 2006 2006 2006 2006 12 Basic air sealing does not address all issues, but it makes a difference and creates an informed homeowner. 6
7/16/2013 Residential Direct Install (RDI) “Air Sealing Promotion” Gross Impacts as Evaluated by Opinion Dynamics “Interim Impact Report” Estimated average annual savings of 9.77 MMBTU per project. (72 gallons of oil equivalent) Analysis of the RDI Program found that the program is cost-effective for the Total Resource Cost test (TRC), the Program Administrator Cost Test (PACT), and the Participant Cost Test (PCT). All tests show a positive net present value and a benefit-cost ratio that well exceeds 1.0. Estimated benefit-cost ratios for RDI are: TRC = 2.64 PACT = 3.58 What else have we learned? PCT = 6.66 13 Residential Direct Install (RDI) Building stock characteristics Building type (1 to 4 unit residential) Owner-Occupied Single Family Site Built Single-Family Rental Site Built Owner-Occupied Mobile Homes Renter-Occupied Mobile Homes Owner-Occupied Multi-Family Renter-Occupied Multi-Family Condominium 14 7
7/16/2013 Residential Direct Install (RDI) Building stock characteristics PRE average attic insulation R value Less than R4 R4 to R12 R13 to R29 R30 to R50 Above R50 DOE recommended attic insulation for Maine is R49!! ~15 inch insulation depth 15 Residential Direct Install (RDI) Building stock characteristics PRE average exterior wall insulation R value Less than R4 R5 to R13 R14 to R19 Above R20 Lots of pre 1940 homes have zero wall insulation! 16 8
7/16/2013 Residential Direct Install (RDI) Building stock characteristics PRE average basement wall or ceiling insulation R value None R1 to R6 R7 to R19 Above R20 Huge opportunity for savings by insulating basement walls! 17 Residential Direct Install (RDI) Building stock characteristics Primary Heating Fuel in participating homes Fuel Oil Kerosene Propane / LPG Wood Pellets Natural Gas Other Bulk delivered petroleum is overwhelming majority of heating in Maine 18 9
7/16/2013 Residential Direct Install (RDI) Building stock characteristics Maine housing stock in summary: • Older • Leaky • Poorly insulated • Frequently damp • Heating with most expensive fuels • Average heating system is old and inefficient Where we need to head: • Air seal penetrations in basement, attic and living spaces • Increase insulation levels in attics, walls and basements • Upgrade to high efficiency heating systems with lower cost fuels • Deal with bulk moisture issues everywhere 19 One house at a time… A big problem but a finite one. “All of the above” strategy required for maximum impact. Dana Fischer Residential Program Manager Dana.Fischer@efficiencymaine.com (207) 650-8774 20 10
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