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                     Energy Efficiency in
                    New & Existing Homes

                       Greening Midwest Communities
                              October 20, 2010



                               NAHB Research Center
Overview

   NAHB Research Center
   Builders Challenge
   Building America
       Individual Measures
       Whole House Packages
       Quality Management
   EnergyValue Housing Award (EVHA)
                                       p. 2
NAHB Research Center
   Mission:
       Promote innovation in housing technology to
        improve the quality, durability, and affordability of
        homes




                                                                p. 3
Research Capabilities
   Testing Laboratory & Market Research Facility
       Thermal (hot box)
       Moisture (laboratory and test huts)
       Structural (testing and design)
       Toolbase.org (builder/trade technical resource)
       Quality management resources
       Market research and diffusion of innovation
       Field testing and monitoring
       Certification programs
       HVAC design
       Cost analysis


                                                          p. 4
NAHB Research Center
         Cost-effective energy
          efficiency solutions
             Existing home remodeling
             New high performance
              homes
             Quality management tools
             Technology diffusion
             Industry resources
                                         p. 5
Department of Energy
              Programs
   Builders Challenge
       DOE’s energy efficiency
        certification for homes
   Building America
       DOE’s residential research
        & development (R&D)
        program
                                     p. 6
DOE’s Builders Challenge
   Voluntary certification program
    for energy-efficiency
   Minimum requirements
       E-Scale (HERS Index) of 70 or less
       Builders Challenge Quality Criteria




                                              p. 7
Dual Certification
              NGBS & Builders Challenge

   Dual Certification
       June 29, 09
       NGBS
       DOE’s Builders Challenge
   Seamless Integration
    w/ Green Certification
       Green scoring tool
       www.NAHBGreen.org



                                          p. 8
Dual Certification

   Building practices leading to high
    performance homes
   All practices in Builders Challenge
    Quality Criteria are part of the NGBS
    (Chap 6,7, & 9)
   Most NGBS silver-level houses can
    also meet Builders Challenge



                                            p. 9
EnergySmart Home Scale
        (E-Scale)




                         p. 10
Building America
   Private/public
    partnership sponsored
    by U.S. Department of
    Energy
   Conducts research on
    energy-efficient
    solutions for new and
    existing housing

   Ultimate goal: market
    ready net-zero energy
    homes
                            p. 11
Building America Goals

             Construct “high
              performance homes”
              that are
                 Energy efficient
                 Durable
                 Comfortable
                 Healthy to live in

              In other words . . . Green.

                                            p. 12
Individual Measures & Integration
             Research
Existing Homes             New Homes
 High R-Roof Insulation    High R-Wall

 Air Sealing                     Thermal, Moisture,
                                   Structural, Energy, Cost
 Retrofit Packages
                              HVAC
                                  Design for HPH, GSHP
                              Hot Water Systems
                              Thermal Mass
                              MELs
                              Integration/Cost Analysis
                                                              p. 13
Individual Measures
   System Analysis
       How are systems installed,
        operated and maintained?
       How much energy is
        saved?
   Test and monitor
    systems at the Research
    Center’s laboratory
    and/or in the field



                                     p. 14
Individual Measures
               Integrated Rim Header
   Double rim member at
    openings
   Joist hangers at
    openings
   King studs carry
    gravity load and wind
    loading
   Eliminates need for
    jack studs




                                       15
                                            p. 15
Individual Measures
 Integrated Rim Header

               Primary purpose:
                   Understand deformations
                    to ensure window
                    serviceability
                   Additional testing is
                    planned




                                       16
                                              p. 16
Individual Measures
 Integrated Rim Header




                         17
                              p. 17
Whole House Packages
   Work with builder partners
   New home construction
       50% savings over 15 yr old home
        (BA Benchmark)
   Existing homes
       30% savings over existing
        structure
   Whole house approach
       Ensure building & systems function
        together to reduce energy use and
        minimize costs


                                             p. 18
Current Project Locations




New Homes Work
  - Systems Research
  - Prototype Home
  - Community Scale

Existing Homes Work
   - Systems Research
   - Prototype Home
   - Community Scale
                                   p. 19
Existing Home Packages
        Montgomery County Habitat
   Deliver 12 fully renovated
    homes to clients
   Affordability,
   Enhance safety,
   Improve durability,
   Lower the energy cost,
   Adhere to schedule and
    budget


                                    p. 20
Existing Home Packages
    Montgomery County Habitat




R 4.7 original to R 20 retrofit

                                  p. 21
New Home Packages
                      K. Hovnanian NJ
   Mixed Humid Climate
   40% (BA Benchmark)
   HERS Index - 65

   Panelized Walls
   NAHBRC construction
    monitoring
   Simplified duct system
                                         12 ft.
       saving 28% supply duct and 70%            9 ft.
        return duct material

                                                          p. 22
K. Hov, NJ             Monmouth Description                          Monmouth Specs
                            Slab on Grade
Foundation
                        2’ perimeter insulation                         2” XPS R-10
                           Panelized Walls
Walls                Exterior Rigid Foam (1” SIS)                           R-5
                        Batt Cavity Insulation                              R-13
Roof / Attic              Loose fill fiberglass                             R-49
Windows              High Performance Windows                      U = 0.34 / SHGC = 0.26
                           Gas Furnace
Heating System                                                           95% AFUE
                    Located in Conditioned Space
                            Central Unit
Cooling System                                                            15 SEER
                    Located in Conditioned Space

Ducts                        Deep Buried                   Supply trunk/boots sealed w/ spray foam
Water Heater       Navien Direct Vent Water Heater                        EF = 0.98
Lighting                   90% fluorescent

Appliances                   Energy Star                              (where supplied)

Ventilation      Honeywell fresh air ventilation system       Control integrated with thermostat

Air Sealing              Air Sealing Package              Foam over top plates, SIS gaskets, framed
                                                              cavities & knee wall air barriers
                                                                                                      p. 23
HPHQMS




   Scopes of Work (SOW)      Hotspot Inspection Process
   Economics of Quality      ToolBase.org
                                  Quality Management
                                   Resources                p. 24
Energy Value Housing Award (EVHA)
   Awards Ceremony
        International Builders
         Show
        Orlando, FL
        Jan 11, 2011

   New Homes
   Existing Homes


                                        p. 25
Resources
   Building America
     -   www.eere.energy.gov/buildings/building_america
   Builders Challenge
     -   www.eere.energy.gov/buildings/challenge
   Dual Certification
     -   www.nahbgreen.org
   National Green Building Certification
     -   www.nahbgreen.org

   NAHB Research Center
     -   Corporate: www.nahbrc.com
     -   Technical: www.toolbase.org

                                                          p. 26
Amber Wood
   Program Manager, Energy Efficiency

   NAHB Research Center

     400 Prince George’s Blvd
    Upper Marlboro, MD 20774
            301-430-6309
     (toll-free) 800-638-8556
       awood@nahbrc.com
www.nahbrc.org • www.toolbase.org
                                    p. 27

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2010 10-20 nahbrc greening midwest

  • 1. Dedicated to improving home building since 1964. Energy Efficiency in New & Existing Homes Greening Midwest Communities October 20, 2010 NAHB Research Center
  • 2. Overview  NAHB Research Center  Builders Challenge  Building America  Individual Measures  Whole House Packages  Quality Management  EnergyValue Housing Award (EVHA) p. 2
  • 3. NAHB Research Center  Mission:  Promote innovation in housing technology to improve the quality, durability, and affordability of homes p. 3
  • 4. Research Capabilities  Testing Laboratory & Market Research Facility  Thermal (hot box)  Moisture (laboratory and test huts)  Structural (testing and design)  Toolbase.org (builder/trade technical resource)  Quality management resources  Market research and diffusion of innovation  Field testing and monitoring  Certification programs  HVAC design  Cost analysis p. 4
  • 5. NAHB Research Center  Cost-effective energy efficiency solutions  Existing home remodeling  New high performance homes  Quality management tools  Technology diffusion  Industry resources p. 5
  • 6. Department of Energy Programs  Builders Challenge  DOE’s energy efficiency certification for homes  Building America  DOE’s residential research & development (R&D) program p. 6
  • 7. DOE’s Builders Challenge  Voluntary certification program for energy-efficiency  Minimum requirements  E-Scale (HERS Index) of 70 or less  Builders Challenge Quality Criteria p. 7
  • 8. Dual Certification NGBS & Builders Challenge  Dual Certification  June 29, 09  NGBS  DOE’s Builders Challenge  Seamless Integration w/ Green Certification  Green scoring tool  www.NAHBGreen.org p. 8
  • 9. Dual Certification  Building practices leading to high performance homes  All practices in Builders Challenge Quality Criteria are part of the NGBS (Chap 6,7, & 9)  Most NGBS silver-level houses can also meet Builders Challenge p. 9
  • 10. EnergySmart Home Scale (E-Scale) p. 10
  • 11. Building America  Private/public partnership sponsored by U.S. Department of Energy  Conducts research on energy-efficient solutions for new and existing housing  Ultimate goal: market ready net-zero energy homes p. 11
  • 12. Building America Goals  Construct “high performance homes” that are  Energy efficient  Durable  Comfortable  Healthy to live in In other words . . . Green. p. 12
  • 13. Individual Measures & Integration Research Existing Homes New Homes  High R-Roof Insulation  High R-Wall  Air Sealing  Thermal, Moisture, Structural, Energy, Cost  Retrofit Packages  HVAC  Design for HPH, GSHP  Hot Water Systems  Thermal Mass  MELs  Integration/Cost Analysis p. 13
  • 14. Individual Measures  System Analysis  How are systems installed, operated and maintained?  How much energy is saved?  Test and monitor systems at the Research Center’s laboratory and/or in the field p. 14
  • 15. Individual Measures Integrated Rim Header  Double rim member at openings  Joist hangers at openings  King studs carry gravity load and wind loading  Eliminates need for jack studs 15 p. 15
  • 16. Individual Measures Integrated Rim Header  Primary purpose:  Understand deformations to ensure window serviceability  Additional testing is planned 16 p. 16
  • 17. Individual Measures Integrated Rim Header 17 p. 17
  • 18. Whole House Packages  Work with builder partners  New home construction  50% savings over 15 yr old home (BA Benchmark)  Existing homes  30% savings over existing structure  Whole house approach  Ensure building & systems function together to reduce energy use and minimize costs p. 18
  • 19. Current Project Locations New Homes Work - Systems Research - Prototype Home - Community Scale Existing Homes Work - Systems Research - Prototype Home - Community Scale p. 19
  • 20. Existing Home Packages Montgomery County Habitat  Deliver 12 fully renovated homes to clients  Affordability,  Enhance safety,  Improve durability,  Lower the energy cost,  Adhere to schedule and budget p. 20
  • 21. Existing Home Packages Montgomery County Habitat R 4.7 original to R 20 retrofit p. 21
  • 22. New Home Packages K. Hovnanian NJ  Mixed Humid Climate  40% (BA Benchmark)  HERS Index - 65  Panelized Walls  NAHBRC construction monitoring  Simplified duct system 12 ft.  saving 28% supply duct and 70% 9 ft. return duct material p. 22
  • 23. K. Hov, NJ Monmouth Description Monmouth Specs Slab on Grade Foundation 2’ perimeter insulation 2” XPS R-10 Panelized Walls Walls Exterior Rigid Foam (1” SIS) R-5 Batt Cavity Insulation R-13 Roof / Attic Loose fill fiberglass R-49 Windows High Performance Windows U = 0.34 / SHGC = 0.26 Gas Furnace Heating System 95% AFUE Located in Conditioned Space Central Unit Cooling System 15 SEER Located in Conditioned Space Ducts Deep Buried Supply trunk/boots sealed w/ spray foam Water Heater Navien Direct Vent Water Heater EF = 0.98 Lighting 90% fluorescent Appliances Energy Star (where supplied) Ventilation Honeywell fresh air ventilation system Control integrated with thermostat Air Sealing Air Sealing Package Foam over top plates, SIS gaskets, framed cavities & knee wall air barriers p. 23
  • 24. HPHQMS  Scopes of Work (SOW)  Hotspot Inspection Process  Economics of Quality  ToolBase.org  Quality Management Resources p. 24
  • 25. Energy Value Housing Award (EVHA)  Awards Ceremony  International Builders Show  Orlando, FL  Jan 11, 2011  New Homes  Existing Homes p. 25
  • 26. Resources  Building America - www.eere.energy.gov/buildings/building_america  Builders Challenge - www.eere.energy.gov/buildings/challenge  Dual Certification - www.nahbgreen.org  National Green Building Certification - www.nahbgreen.org  NAHB Research Center - Corporate: www.nahbrc.com - Technical: www.toolbase.org p. 26
  • 27. Amber Wood Program Manager, Energy Efficiency NAHB Research Center 400 Prince George’s Blvd Upper Marlboro, MD 20774 301-430-6309 (toll-free) 800-638-8556 awood@nahbrc.com www.nahbrc.org • www.toolbase.org p. 27

Editor's Notes

  1. Removing technological and regulatory barriers to innovation