Demystifying LEED for Homes v4.0 Jay Hall Jay Hall & - PowerPoint PPT Presentation

Demystifying LEED for Homes v4.0 Jay Hall Jay Hall & Associates, Inc. October 31, 2013

Overview 1. Process Changes 2. Rating System Changes 3. Examples

Process V4 Roll ‐ Out Schedule 2015 2013 2014 1. 2. 3. 4. 5. 1. Immediately Can begin to use V4 2. Nov/Dec 2013 v4 Resources Available 3. Jan 2014 EA 1 Ballot (HERS 70 max.) 4. Spring 2014 EA 1 Required 5. Summer 2015 V4 Required (2008 phased out)

Process Admin.  Fees See checklist  Registration https://www.usgbc.org/leedonline/homes/  Green Raters http://www.usgbc.org/people/green ‐ raters  Providers http://www.usgbc.org/organizations/members/homes ‐ providers  Certification

Process Tools  Checklist www.usgbc.org/resources/ homes ‐ v2008 ‐ checklist ‐ xls  Rating System http://www.usgbc.org/resources/leed ‐ homes ‐ v2008 ‐ current ‐ version http://www.usgbc.org/sites/default/files/LEED%20v4%2 0for%20Homes%20and%20Midrise_Ballot%20Version.p df  CIRs http://www.usgbc.org/leed ‐ interpretations  Reference Guide http://www.usgbc.org/resources/leed ‐ homes ‐ reference ‐ guide

USGBC LEED v4 Webinars http://usgbc.peachnewmedia.com/store/seminar/seminar.php?seminar=21420

Rating System Basic Structure General Changes 1. 110 Points Total (from 136) 2. Credit names are familiar 3. Order (numbering) is very different a. Prereqs are pulled out front (p1, p2, etc.) b. Credits follow (c1, c2, etc.) 4. Single Family, Low ‐ Rise and Mid ‐ Rise are Combined. 5. Bottom Line: Projects will lose one certification level.

Rating System Basic Structure Certification Levels (% of Total Points) 2008 V 4.0 S / M / L S / M / L Certified 26% /33%/ 40% 27% / 36%/ 45% Silver 36% /43%/ 51% 36% /45%/ 54% Gold 48% /55%/ 62% 45% / 54%/ 63% Platinum 59% /66%/ 73% 63% /72%/ 82% S = 950 Sq. Ft., 2 Bedroom M = 1,900 Sq. Ft., 3 Bedroom L = 3,820 Sq. Ft., 4 Bedroom

Rating System Basic Structure Credit Categories 2008 v 4.0 Pts/Prereq/Min Pts/Prereq/Min ID 11 / 3 / Moved LL 10 / / LT 15 / / 8 (LT+EA) SS 22 / 2 / 5 SS 7 / 2 / WE 15 / / 3 WE 12 / 1 / 3 EA 38 / 2 / EA 38 / 4 / MR 16 / 3 / 2 MR 10 / 2 / EQ 21 / 7 / 6 EQ 16 / 7 / 3 AE 3 / 1 / Gone Innov. 6 / 1 / RP 4 / / Total 136 / 18 / 16 110 / 17 / 14

Ho How Many Changes? w Many Changes? Credit 2008 Removed Version 4.0 Category Total # Total # Same Moved Changed New Measures Measures ID (IN) 11 1 6 2 (Top,EA) 3 7 LL (LT) 10 2 5 3 1 7 SS 15 2 3 (LT,WE) 5 WE 8 4 1 3 1 4 EA 6 2 3 5 9 MR 9 4 4 1 (EQ) 1 6 EQ 25 9 10 6 3 14 AE 4 3 1(EA) 0 Total 107 27 29 7 16 10 60

ID (IN/RP) 2008 Version 4 # Name # Comment 1.1 Preliminary Rating IN p1 MOVED 1.2 Integrated Project Team SAME / COMBINED 1.4 Design Charrette IP c1 (1) NEW Trades Training 1.3 LEED AP Homes IN c2 MOVED 1.5 Building Orientation for Solar EA c5 MOVED / CHANGED 2.1 Durability Planning REMOVED 2.2 Durability Management MR p2 MOVED / CHANGED MR c1 ESH v3 2.3 Third Party Durability Verif’n 3 Innovation #1 ‐ 4 IN c1 MOVED (5 pts.) NEW RP 1 ‐ 4 Regional Priority (4 pts.)

LT (LL) 2008 Version 4 # Name # Comment 1 LEED ND LT c1 (1) CHANGE: 15 Points ADDED: Street 2 Site Selection Network COMBINED 3.1 Edge Development PATH 2: REMOVED LT C2 (8 pts) ADDED: Bicycle 3.2 Infill Network/Storage 3.3 Previously Developed PATH 1: (4 pts.) 4 Existing Infrastructure REMOVED 5.1 Basic Community Resources 5.2 Extensive Community Resources LT c4 COMBINED 5.3 Outstanding Community Resources 6 Access To Open Space LT c5 NEW: Access to Public Transit SS 6 Compact Development LT c3 SAME (3 pts.)

SS 2008 Version 4 # Name # Comment SAME 1.1 Erosion Controls – Construction SS p1 (except > 1 acre) 1.2 Minimized Disturbed Area REMOVED 2.1 No Invasive Plants SS p2 SAME 2.2 Landscaping REMOVED 2.3 Limit Turf MOVED / COMBINED WE c3 (Reduced from 5 to 4 pts.) 2.4 Drought Tolerant Plants 2.5 Outdoor Water Demand Calc. WE c1 MOVED / CHANGED CHANGED: 3 Local Heat Island Effects SS c1 Includes Roof

SS (cont’d) 2008 Version 4 # Name # Comment 4.1 Permeable Lot COMBINED / CHANGED: 4.2 Permanent Erosion Controls SS c2 Includes Area under Roof (Reduced 7 to 3 pts max.) 4.3 Roof ‐ Run ‐ Off (Quality Control) 5 Non ‐ Toxic Pest Control SS c3 SAME 6 .1 Moderate Density Moved 6.2 High Density LL c3 (Reduced from 4 to 3 pts.) 6.3 Very High Density

WE 2008 Version 4 # Name # Comment 1.1 Rainwater Harvesting 1.2 Graywater Reuse System MOVED : to c1 (below) 1.3 Municipal Recycled Water 2.1 High Efficiency Irrigation System REMOVED 2.2 Third Party Inspection 2.3 Reduce Overall Irrig’n Demand MOVED: to c1 (below) 3.1 High Efficiency Fixtures CHANGED c2 WaterSense 3.2 Very High Efficiency Fixtures p1 NEW: Water Metering NEW: Total Water Use c1 (Reduced from 16 to 12 pts.) CHANGED: Outdoor Water Use ( ≤ 60% Turf & ≥ 25% Native Plants) SS 2 Landscaping (Turf / Plants) c3 (Reduced from 9 to 4 pts. Including Irrigation)

EA Prereqs 2008 Version 4 # Name # Comment 1.1 Meet ENERGY STAR Homes v2 EA p1 CHANGED: ESH v3 1.2 Exceed ENERGY STAR Homes v2 EA c1 CHANGED: ESH v3 Energy Metering EA p2 (MF: every unit) MOVED: from AE 1.1 EA p3 Education of Homeowner

EA Performance Path Option 1: LEED Energy Budget (MBtu/yr) Modeled annual energy usage < LEED Energy Budget where : LEED Energy Budget is based on the ENERGY STAR for Homes version 3 (with several modifications). 1 Point per 1 ‐ 3% < ESH v3 Option 2: HERS Index w/ Home Size Adj. Modeled annual energy usage < HERS 75 1 Point per 1 ‐ 3 HERS Index Points < 75 Home Size Adjuster: +1 point per 4% decrease in CFA < ESH v3 benchmark home ‐ 1 point per 4% increase in CFA > ESH v3 benchmark home

EA (cont’d) for Both Performance and Prescriptive Paths 2008 Version 4 # Name # Comment CHANGED: New PERF. Test Option EA 7.1 Hot Water Distribution COMBINED: EA c2 (5 pts.) EA 7.2 Pipe Insulation Active Solar Ready Design EA c3 (not available if PV installed) HVAC Start ‐ up Credentialing EA 11.2 Refrigerant Charge Testing EA c4 (ESH v3 HVAC Checklist) (+1 Pt.) Advanced Utility Tracking EA c5 (Option 2: BPP)

EA (cont’d) Prescriptive Path 2008 Version 4 # Name # Comment NEW Building Orientation ID 1.5 EA c5 (3 pts.) for Passive Solar CHANGED 2. Insulation EA c7 10/20% > IECC 2012; Grade I SAME 3 Air Infiltration EA c6 (ACH50 or CFM50/SF) 4 Windows EA c8 CHANGED SAME 5 Duct Leakage EA c10 Small AND Large Home Criteria SAME 6 HVAC Equipment EA c9 Pts for EE Heating OR EE Cooling

EA (cont’d) Prescriptive Path 2008 Version 4 # Name # Comment 7.3 Water Heating Equipment EA c11 SAME CHANGED 8 Lighting EA c12 Calcs Required (W/SF, or % Red’n) All Exterior – Dark Sky Qualified SAME 9 Appliances EA c13 Clothes Washer moved to WE c2 CHANGED 10 Renewables EA c14 1 pt per 50 KWh (Reduced from 10 to 4 pts. max.) 11.1 Refrigerant Charge Test EA p1 COMBINED: ESH v3 11.2 Refrigerant – R 410a (Puron) DELETED

MR 2008 Version 4 # Name # Comment 1.1 Framing Order Waste Limit DELETED 1.2 Detailed Framing Docs DELETED 1.3 Detail Cut List & Lumber Order DELETED MR c2 1.4 Framing Efficiencies CHANGED (Reduced: 4 to 2 pts.) 1.5 Off ‐ Site Fabrication DELETED MRp1 SAME 2.1 FSC Tropical Wood CHANGED MRc3 2.2 Envir. Preferable Products Fewer Options (4 pts.) MOVED EQ c7 (3 pts.) Low Emitting Products 3.1 Construction Waste Management DELETED MR c4 3.2 Construction Waste Reduction CHANGED Tied to Home Size CHANGED MR p2 ID 2.2 Durability Management ESH v3 Water Mgmt. MOVED 3 rd Party Durability Verification ID 2.3 MR C1 Durability Verification (+1 pt.)

EQ 2008 Version 4 # Name # Comment 1 ENERGY STAR with IAP REMOVED CHANGED: Fireplace ‐ Closed 2.1 Basic Combustion Venting EQ p2 Combustion OR Combustion Safety Test Same 2.2 Enhanced Combustion Venting EQ c5 (EPA Qualified 1 Pt.; None 2 Pts.) 3 Moisture Control REMOVED CHANGED 4.1 Basic Outdoor Air Ventilation EQ p1 ASHRAE 62.2 ‐ 2010 CHANGED 4.2 Enhanced Outdoor Air Vent’n EQ c1 Balanced OR HRV/ERV MOVED / COMBINED 4.3 Third Party Performance Testing EA p1 ESH v3

EQ (cont’d) 2008 Version 4 # Name # Comment 5.1 Basic Local Exhaust EQ p1 COMBINED: 4.1 5.2 Enhanced Local Exhaust EQ c5 COMBINED: 4.2 MOVED / COMBINED 5.3 Third Party Performance Testing EA p1 ESH v3 MOVED / COMBINED 6.1 Room by Room Load Calcs EA p1 ESH v3 MOVED / COMBINED 6.2 Return Air /Controls EA p1 ESH v3 ESH v3 6.3 Air Balancing EQ c3 (+3 Pts.)

EQ (cont’d) 2008 Version 4 # Name # Comment 7.1 Good Filters EQ p5 SAME (MERV 8) 7.2 Better Filters REMOVED 7.3 Best Filters REMOVED 8.1 Contaminant Control – Ducts REMOVED 8.2 Indoor Contaminant Control COMBINED: EQ c2 (0.5 Pt. Each) 8.3 Pre ‐ Occcupancy Flush

EQ (cont’d) 2008 Version 4 # Name # Comment 9.1 Radon Resistant (Zone 1) EQ p4 SAME 9.2 Radon Resistant (Zone 2 ‐ 3) REMOVED 10.1 No HVAC in Garage EQ p3 COMBINED 10.2 Minimize Pollutants – Garage 10.3 Exhaust Fan Garage EQ c6 COMBINED (1 or 2 pts.) 10.4 Detached / No Garage 11 ETS Control EQ p6 ( LR and MR Multi ‐ family only) EQ p7 CHANGED: 0.23 cfm50 / SF 12 Compartmentalization EQ c4 0.15 cfm50 / SF MR 2.2 Low Emission Products EQ c7 MOVED