Presentation to Freeport Community Services 11.16.11 regarding the Mallett Deep Energy Retrofit. Co presenters were DeWitt Kimball, Peter Warren and Josh Wojcik.

1. The Mallett Deep Energy Retrofit
A Renovation for the Next 125 Years
1
Freeport Community Services

2. Tonight’s Agenda
• Understanding the Concept of Deep Energy
Retrofits and Why
• The Mallett House in Context--Past and Future
• How We’re Getting a Deep Energy Reduction
• Key Construction Details and Testing To Date
• Lessons Learned
• Reducing Energy Use in YOUR House
• Tour
DATE 2

3. Horizon Foundation
DATE 3

4. Why Go Deep?
4

6. 39% 27%

7. Energy Use in the US
Use of Energy Greenhouse Gas Emissions
27% 32%
transportation transportation
30%
industrial
34% 21%
industrial residential 20%
residential
18%
18% commercial
commercial
Source: US Energy Information Adm.
Buildings are the single largest user of energy
Buildings are the largest contributor of greenhouse gas emissions
7

9. If every home built from now until 2030 was
Net Zero
we’d reduce residential building energy by
~8%
9

10. 124 Million

11. US Housing Stock
Existing US Housing Stock, 1000’s
25,000
18,750
12,500
6,250
0
Pre1920 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s
significant need moderate need some need for
for energy retrofit for energy retrofit energy retrofit
Sources: US Census Bureau, Annual Housing Survey.
11

12. The Challenge of Older Homes
Use More Energy
Pre-1940 homes use 32% more energy than 1980‘s
Average 120MM btu’s/house vs 81MM
Disproportionately Located in Cold Climates
Have Construction Details that are Energy
Challenges
Basements and Crawl Spaces
Heavier use of fuel oil
12

13. But it’s only 14% of homes
pre-1940
13

14. 180 Coal Plants

16. Deep What?
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17. Defining “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

18. Beyond Energy Efficiency & Carbon
• Resiliency
• Affordability
• Durability
• Comfort
• Health
• Value
DATE 18

19. Naomi C. O. Beal Photo
57 Depot Street
Freeport, Maine

21. Oak Street, 1894

23. The Life of 57 Depot Street
1st Half 2nd Half
23

24. 57 Depot St Plan
24

25. Freeport Retrofit Freeport, ME
 Source Energy Savings –
61% Deep Energy Retrofit
Warren Construction Group
Source Energy Parametric Annual Loads Study
© 2010
Building Science Day Month Year 25
Corporation

26. Where’s the Highest Impact?
Triple Paned Windows
High Efficiency Hybrid Heating/Cooling
Air Sealing
Insulation
100% Low Energy Lighting
DATE 26

27. Breaking Out the Reductions
CFL Lighting
8%
High Eff Heat/Cool
14%
Windows
5% Air Sealing
53%
Insulation
21%
DATE 27

28. Deep Energy Reductions
are all about
Air Sealing &
Super-Insulation
DATE 28

31. Insulating In vs Out
Advantages of Going In Advantages of Going
• Minimizes exterior impact visually Out
• Siding and roofing not impacted • Can remain occupied
• Windows remain in place • Minimize code impact (stair widths)
• Align with interior renovation? • Noimpact to partitions, bearing
walls
• Align
with New Siding or Roofing or
Windows
• Plastic materials to the exterior
• Proven wall & roof assembly
DATE 31

35. Key Construction Details
and Lessons Learned
Peter Warren
DATE 35

36. Wall & Roof

37. Wall

38. Windows

39. Cellar

40. Freeport Retrofit Freeport, ME
 Mechanical Design
Warren Construction Group
 Hybrid heat system:
96% AFUE gas furnace +
18 SEER/9.1 HSPF
air source heat pump
 Cooling: 18 SEER/9.1
HSPF split system
 0.82 EF instantaneous
water heater
 RenewAire heat recovery
ventilator (HRV)
 1.2 kW PV system
Example of high efficiency mechanical system
© 2010
Building Science Day Month Year 40
Corporation

52. First Blower Door Test
DATE 52

60. Energy Reductions in
YOUR Home
Josh Wojcik
DATE 60

61. Even Simple Buildings Can Be Complex
DATE 61

62. Typical Maine Capes/Farmhouses
DATE 62

63. DATE 63

68. Guiding Principles: Staged Approach to
1) Start with the end in mind. Avoid creating barriers for
future 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 for
transitional equipment or components.
6) Do each step right and comprehensively the first time.
7) Consider clusters of work by trade in order to reduce
transaction costs.
Source: 1000 Home Challenge
DATE 68

69. Facebook: Mallett Deep Energy Retrofit
DATE 69

70. EnergyCircle.com/Learn/57-Depot
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71. Let’s Go
See!
Is it worth it?

72. END
DATE 72