Home Energy September October 2012 : Page 1

www. h o m e e n e r g y. o r g f aceb o ok . c om / h ome ener g ymag SEP T EM BER/O C TO BER 2012 Vol. 29 No. 5 t w it t e r: @h o m e e n e rg y m a g contents Editorial 2 The Rising Cost of Water Using It and Flushing It 32 179 Henry Street— A Case Study in Converting from Two-Pipe Steam to Hydronic Heating 18 HVAC to Whole-House by Dan Rieber This multifamily building overcomes obstacles to transition from steam to hydronic heat. Letters 3 In Memoriam: Carol Markell Readers Forum: Energy Effi ciency Modeling— A Rebuttal Performance Contractor? by Christine Liaukus Guidelines and best practices for making the profi table transition into whole-house work. Energy Auditing 6 Energy Upgrade California The BPI Standard 10 Forward Motion— Career Path Options with the New Home Energy Professional Certifi cations 22 Resolving the Circulation Dilemma in Multifamily Buildings by Derek Zobrist Demand-controlled pumping for hot water distribution holds high value in multifamily buildings. 38 Weather-Stripping Trends 12 Demand-Controlled Pumps— Sticker Shock Versus Value Windows with V-Strip by Victor Shelden and Ian Shapiro An in-depth window study on six homes compares the effectiveness of plastic vs. metal weather-stripping. 16 ASHRAE in Weatherization 26 Creating Healthy and Energy-Effi cient Housing— What Does the Research Tell Us? by Ellen Tohn and Jonathan Wilson Energy-effi cient upgrades equal occupant health—here’s all the research to back it up. 46 What’s New in Water Heating? by Robb Aldrich and Carl Shapiro State-of-the-art heat pump water heaters join the scene. New & Notable 52 HERS Index Making News in Florida, Century Club Award Winners, App Alert: ResVent 62.2, and more! 54 Advertiser Index 55 Sustainable Connections 56 Calendar COVER: Scott Willingham from the Veterans Green Jobs program (veteransgreenjobs.org)—a program that trains vets to work in the Weatherization Assistance Program (WAP), and for other green jobs—prepares to insulate a home in Colorado. Research shows that weatherizing a home makes it healthier to live in. (See story, p. 26.) PHOTO: WAPTAC www. homeenergy.org 1

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