2010 10-20 nahbrc greening midwest

Dedicated to improving home building since 1964.

Greening Midwest Communities

October 20, 2010

NAHB Research Center

Energy Efficiency in New & Existing Homes

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Overview

NAHB Research Center Builders Challenge Building America

Individual Measures Whole House Packages Quality Management

EnergyValue Housing Award (EVHA)

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Mission: Promote innovation in housing technology to

improve the quality, durability, and affordability of homes


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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

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Cost-effective energy efficiency solutions Existing home remodeling New high performance

homes Quality management tools Technology diffusion Industry resources


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Department of Energy Programs

Builders Challenge DOE’s energy efficiency

certification for homes Building America

DOE’s residential research & development (R&D) program

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DOE’s Builders Challenge

Voluntary certification program for energy-efficiency

Minimum requirements E-Scale (HERS Index) of 70 or less Builders Challenge Quality Criteria

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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

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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

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EnergySmart Home Scale (E-Scale)

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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

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Building America Goals

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

In other words . . . Green.

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Individual Measures & Integration Research

New Homes High R-Wall

Thermal, Moisture, Structural, Energy, Cost

HVAC Design for HPH, GSHP

Hot Water Systems Thermal Mass MELs Integration/Cost Analysis

Existing Homes High R-Roof Insulation Air Sealing Retrofit Packages

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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

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Individual MeasuresIntegrated Rim Header

Double rim member at openings

Joist hangers at openings

King studs carry gravity load and wind loading

Eliminates need for jack studs

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Primary purpose: Understand

deformations to ensure window serviceability

Additional testing is planned

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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

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Current Project Locations

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

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

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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

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R 4.7 original to R 20 retrofit

Existing Home Packages Montgomery County Habitat

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New Home PackagesK. Hovnanian NJ

Mixed Humid Climate 40% (BA Benchmark) HERS Index - 65

Panelized Walls NAHBRC construction

monitoring Simplified duct system

saving 28% supply duct and 70% return duct material

12 ft.9 ft.

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K. Hov, NJ Monmouth Description Monmouth Specs

FoundationSlab on Grade

2’ perimeter insulation 2” XPS R-10

WallsPanelized Walls

Exterior Rigid Foam (1” SIS)Batt Cavity Insulation

R-5R-13

Roof / Attic Loose fill fiberglass R-49

Windows High Performance Windows U = 0.34 / SHGC = 0.26

Heating SystemGas Furnace

Located in Conditioned Space95% AFUE

Cooling SystemCentral Unit

Located in Conditioned Space15 SEER

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

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HPHQMS

Scopes of Work (SOW) Economics of Quality

Hotspot Inspection Process ToolBase.org

Quality Management Resources

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Energy Value Housing Award (EVHA)

Awards Ceremony International Builders

Show Orlando, FL Jan 11, 2011

New Homes Existing Homes

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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

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400 Prince George’s Blvd

Upper Marlboro, MD 20774

301-430-6309

(toll-free) 800-638-8556

[email protected]

www.nahbrc.org www.toolbase.org

Amber WoodProgram Manager, Energy Efficiency


2010 10-20 nahbrc greening midwest

Technology

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