1. 1. The Mallett Deep Energy RetrotA Renovation for the Next 125 Years 1 Freeport Community Services
2. 2. Tonights Agenda Understanding the Concept of Deep Energy Retrots and Why The Mallett House in Context--Past and Future How Were Getting a Deep Energy Reduction Key Construction Details and Testing To Date Lessons Learned Reducing Energy Use in YOUR House TourDATE 2
3. 3. Horizon Foundation DATE 3
4. 4. Why Go Deep? 4
5. 5. 39% 27%
6. 6. Energy Use in the USUse of Energy Greenhouse Gas Emissions27%32%transportation transportation30%industrial 34%21% industrial residential 20%residential 18% 18%commercialcommercialSource: US Energy Information Adm.Buildings are the single largest user of energyBuildings are the largest contributor of greenhouse gas emissions 7
7. 7. If every home built from now until 2030 was Net Zerowed reduce residential building energy by ~8%9
8. 8. 124 Million
9. 9. US Housing Stock Existing US Housing Stock, 1000s25,00018,75012,5006,2500 Pre19201920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s signicant need moderate needsome need for for energy retrotfor energy retrot energy retrotSources: US Census Bureau, Annual Housing Survey. 11
10. 10. The Challenge of Older HomesUse More Energy Pre-1940 homes use 32% more energy than 1980s Average 120MM btus/house vs 81MMDisproportionately Located in Cold ClimatesHave Construction Details that are EnergyChallenges Basements and Crawl Spaces Heavier use of fuel oil12
11. 11. But its only 14% of homespre-1940 13
12. 12. 180 Coal Plants
13. 13. Deep What? 16
14. 14. Dening Deep Energy Reduction DOE Building America Program: 50%+Reduction ACI 1000 Home Challenge: 75-90% Actual Use Home Only--no transportation, embodied,durable goods, vacations, consumables 17
15. 15. Beyond Energy Efficiency & Carbon Resiliency Affordability Durability Comfort Health ValueDATE 18
16. 16. Naomi C. O. Beal Photo57 Depot StreetFreeport, Maine
17. 17. Oak Street, 1894
18. 18. The Life of 57 Depot Street 1st Half2nd Half23
19. 19. 57 Depot St Plan 24
20. 20. Freeport RetrofitFreeport, ME Source Energy Savings 61% Deep Energy Retrofit Warren Construction GroupSource Energy Parametric Annual Loads Study 2010Building Science Day Month Year 25Corporation
21. 21. Wheres the Highest Impact? Triple Paned Windows High Efficiency Hybrid Heating/Cooling Air Sealing Insulation 100% Low Energy LightingDATE 26
22. 22. Breaking Out the Reductions CFL Lighting8%High Eff Heat/Cool 14% Windows5%Air Sealing53%Insulation 21%DATE 27
23. 23. Deep Energy Reductionsare all aboutAir Sealing &Super-InsulationDATE 28
24. 24. Insulating In vs OutAdvantages of Going InAdvantages of Going Minimizesexterior impact visually Out Siding and roong not impacted Can remain occupied Windowsremain in place Minimizecode impact (stair widths) Align with interior renovation? Noimpact to partitions, bearing walls Alignwith New Siding or Roong or Windows Plastic materials to the exterior Provenwall & roof assemblyDATE 31
25. 25. Key Construction Details and Lessons Learned Peter Warren DATE 35
26. 26. Wall & Roof
27. 27. Wall
28. 28. Windows
29. 29. Cellar
30. 30. Freeport RetrofitFreeport, ME Mechanical Design Warren Construction Group Hybrid heat system:96% AFUE gas furnace +18 SEER/9.1 HSPFair source heat pump Cooling: 18 SEER/9.1HSPF split system 0.82 EF instantaneouswater heater RenewAire heat recoveryventilator (HRV) 1.2 kW PV systemExample of high efficiency mechanical system 2010Building ScienceDay Month Year40Corporation
31. 31. First Blower Door Test DATE 52
32. 32. Energy Reductions inYOUR HomeJosh Wojcik DATE 60
33. 33. Even Simple Buildings Can Be ComplexDATE 61
34. 34. Typical Maine Capes/Farmhouses DATE 62
35. 35. DATE 63
36. 36. Guiding Principles: Staged Approach to1) Start with the end in mind. Avoid creating barriers forfuture phases.2) Make a value proposition. Embrace non-energy impacts.3) Do no harm Recognize hazards upfront.4) The house is a system; recognize the potential for well-intended actions to yield unanticipated side effects.5) Consider creative approaches such as equipment leases fortransitional equipment or components.6) Do each step right and comprehensively the rst time.7) Consider clusters of work by trade in order to reducetransaction costs. Source: 1000 Home ChallengeDATE 68
37. 37. Facebook: Mallett Deep Energy Retrot DATE 69
38. 38. EnergyCircle.com/Learn/57-Depot70
39. 39. Lets GoSee!Is it worth it?
40. 40. ENDDATE 72