1. Myths, Obstacles and Opportunities of Energy Efficiency in the Re-Use of Historic Buildings Sean Denniston New Buildings Institute Project Analyst

2. National non-profit & think-tank working to improve the energy efficiency of commercial buildings. Intro

3. The Goal We don’t have time to give you a comprehensive guide to energy efficiency in historic preservation, but we can give you a framework and point you in the right direction. Intro

4. Myths

5. Myth # 1: All old buildings are inherently inefficient. Myths

6. The Hidden Barn, Vancouver, WA The Home of NBI

7. Myths NBI Study of the measured performance of 100 LEED buildings.

8. Myth # 2: You have to replace those historic windows if you want to be energy efficient. Myths

11. Yearly energy saving (on one 3’ x 5’ window):625,922 Btu Annual savings per window ( $0.95/therm):$9.65/ year _____________________________________________________ Simple payback ($400 installed / $9.65 ): 41½ years!! “OLD” WOOD WINDOW/REPLACEMENT WINDOW ENERGY ANALYSIS. -- Keith Haberern

12. Obstacles

13. Ignorance Obstacles

14. Ignorance Obstacles

15. Ignorance Obstacles Minimum Bottom 35% Top 35% Maximum

16. Ignorance Mechanical Contractors are trained to minimize comfort complaints, not energy. Obstacles

17. Ignorance Mechanical Contractors are trained to minimize comfort complaints, not energy. Many contractors and mechanical engineers don’t understand the latest techniques and approaches. Obstacles

18. Ignorance Mechanical Contractors are trained to minimize comfort complaints, not energy. Many contractors and mechanical engineers don’t understand the latest techniques and approaches. Many consultants and mechanical engineers only understand how we build buildings now. Obstacles

19. The Code

20. A building that meets code is not an efficient building. Obstacles

21. The Code Obstacles

22. The Code A building that meets code is not an efficient building. Code compliance can result in minimally efficient in-efficiency. Obstacles

23. Opportunities

24. Passive Strategies Opportunities

25. Passive Strategies 1887: The cutting edge of Green Design. Opportunities

26. Passive Strategies 1887: The cutting edge of Green Design. Opportunities

27. Passive Strategies Minimized Glazing Area Thermal Mass Daylighting Natural Ventilation Opportunities

28. Commissioning Opportunities

29. Savings as % of Baseline These buildings appear to use more energy than the code baseline! Opportunities Commissioning

30. Embodied Energy Opportunities

31. Embodied Energy

32. Opportunities Embodied Energy

33. Opportunities Embodied Energy

34. Major Lessons

35. Many historic buildings were designed for energy efficiency, take advantage of it.

36. Major Lessons Many historic buildings were designed for energy efficiency, take advantage of it. Commissioning is vital.

37. Major Lessons Many historic buildings were designed for energy efficiency, take advantage of it. Commissioning is vital. Expertise! Expertise! Expertise!

38. Thank you New Buildings Institute Sean Denniston sean@newbuildings.org www.newbuildings.org www.advancedbuildings.net www.gettingto50.net