A9 Green / Total Green Energy Solution Lexington, MA 781-357-2454 Building Science and Efficiency for Residential Buildings Bijan KHosraviani, Ph.D. November 21, 2017 BSA Space
Agenda I. Our Background II. HERS Rating III. Energy Code Overview i. Stretch Code ii. 2012-IECC Code iii. 2015-IECC Code IV. Looking to the Energy Code Future V. Incentives & Benefits of Utility Program VI. Questions 2
A9 Green Background Established in 2009 Energy Efficiency Consultation & Services Energy Modeling, HERS Ratings Building Diagnostics, Inspection, Testing 3D Rendering & Animation 3D Printing 3
Building Analysis & Testing 4
3D Rendering & Animation 5
3D Printing 6
Overall Operate as an extension of the project team Get involved early in the process Guide energy efficiency planning toward an optimal end product Achieve savings on construction costs, on future utility costs, and through rebates programs Total Green Energy Solution, LLC 7
HERS Rating HERS: Home Energy Rating System Our 3 Phase Process: Phase I: Plans Review & Energy Modeling Phase II: Midpoint Inspection Phase III: Final Inspection & Testing 8
Energy Modeling 9
Midpoint Inspection 10
Final Inspection & Testing Blower Door Testing Duct Blaster Testing Ventilation Testing 11
Final Certificate 12
Thermal Bypass Checklist (TBC) Examples: 1.4 Slab Edge insulation 2.1 Walls Behind Shower/Tub 2.2 Walls Behind Fireplace 4.4 Excessive Framing 13
TBC Slab Edge Insulation 14
TBC Slab Edge Insulation 15
TBC Walls Behind Bath Tub / Shower 16
TBC Walls Behind Fireplace 17
TBC Excessive Framing 18
Whole House Infiltration 19
Whole House Infiltration 20
Insulation 21
Basement Insulation 22
Energy Code Overview Stretch Energy Code (July 1, 2010) IECC-2012 Code (July 1, 2014) IECC-2015 Code (Jan 2, 107) 23
Stretch Code The Stretch Code' is an optional appendix to the Massachusetts building energy code that allows cities and towns to choose a more energy- efficient option. Stretch Energy Code was added to the building code on July 24, 2009 Every 6 months new cities and town are adopting it. 24
Stretch Code 25
Stretch Code / HERS Index IECC-2009 New Homes: Below 3000 Sqft HERS Index of 70 or Less Above 3000 Sqft HERS Index of 65 or Less Addition/Renovation Below 2000 Sqft HERS Index of 85 or Less Above 2000 Sqft HERS Index of 80 or Less IECC-2015 New Homes: All Size HERS Index of 55 or Less Addition/Renovation All Size HERS Index of 65 or Less 26
Zone Map 27
2015-IECC Prescriptive 28
Foundation Wall (2009 2015) 29
Fenestration (2009 2015) 30
IECC-2015 Mandatory Blower Door Test 31
IECC-2015 Mandatory Duct Leakage Test Total Duct Leakage 4CFM per 100 sqft of Living Space 32
2015-IECC Summary 33
MA 2015 IECC Not much different than 2012 IECC Except introduction of: Advantages ERI (Energy Rating Index) Compliance Path 1. Flexibility Avg $1700 lower construction cost 2. Marketability Quantified Efficiency Benefits 3. Savings Utility Bill Savings: 1. $300/year comparing to 2012 IECC 2. $850/year comparing to 2006 IECC 34
MA 2015 IECC 35
Future Outlook In 2008, MA pledged triennial building code updates (most recent update in 2017) MA code follows IECC closely Increasingly rigorous code standards Marketability LEED for Home ENERGY STAR Homes Net Zero Solar Ready 36
Zone Map Total Green Energy Solution, LLC 37
Thank You! & Questions? 38