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

• 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) 1. 2013 2014 2015

• 2. 3.

4. 5.

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 Category 2008 Removed Version 4.0

Total # Measures Same Moved Changed New Total # 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) 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 IP c1 (1) SAME / COMBINED 1.4 Design Charrette 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 MR c1 MOVED / CHANGED

ESH v3

2.3 Third Party Durability Verif’n 3 Innovation #1 ‐ 4 IN c1 MOVED (5 pts.) RP 1‐4 NEW

Regional Priority (4 pts.)

LT (LL)

2008 Version 4

# Name # Comment

1 LEED ND LT c1 (1) CHANGE: 15 Points 2 Site Selection LT C2 COMBINED PATH 2: (8 pts) ADDED: Street Network 3.1 Edge Development REMOVED 3.2 Infill ADDED: Bicycle Network/Storage 3.3 Previously Developed PATH 1: (4 pts.) 4 Existing Infrastructure REMOVED 5.1 Basic Community Resources LT c4 COMBINED 5.2 Extensive Community Resources 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 1.1 Erosion Controls – Construction SS p1 SAME

(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 WE c3 MOVED / COMBINED

(Reduced from 5 to 4 pts.)

2.4 Drought Tolerant Plants 2.5 Outdoor Water Demand Calc. WE c1 MOVED / CHANGED 3 Local Heat Island Effects SS c1 CHANGED:

Includes Roof

SS (cont’d)

2008 Version 4

# Name # Comment 4.1 Permeable Lot SS c2 COMBINED / CHANGED:

Includes Area under Roof (Reduced 7 to 3 pts max.)

4.2 Permanent Erosion Controls 4.3 Roof‐Run‐Off (Quality Control) 5 Non‐Toxic Pest Control SS c3 SAME 6 .1 Moderate Density LL c3 Moved

(Reduced from 4 to 3 pts.)

6.2 High Density 6.3 Very High Density

WE

2008 Version 4

# Name # Comment

1.1 Rainwater Harvesting MOVED: to c1 (below) 1.2 Graywater Reuse System 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 c2 CHANGED WaterSense 3.2 Very High Efficiency Fixtures p1 NEW: Water Metering c1 NEW: Total Water Use (Reduced from 16 to 12 pts.) SS 2 Landscaping (Turf / Plants) c3 CHANGED: Outdoor Water Use

(≤ 60% Turf & ≥ 25% Native Plants) (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 EA p2 Energy Metering

(MF: every unit)

EA p3 MOVED: from AE 1.1

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 EA 7.1 Hot Water Distribution EA c2 CHANGED: New PERF. Test Option COMBINED:

(5 pts.)

EA 7.2 Pipe Insulation EA c3 Active Solar Ready Design

(not available if PV installed)

EA 11.2 Refrigerant Charge Testing EA c4 HVAC Start‐up Credentialing

(ESH v3 HVAC Checklist) (+1 Pt.)

EA c5 Advanced Utility Tracking

(Option 2: BPP)

EA (cont’d)

Prescriptive Path

2008 Version 4

# Name # Comment ID 1.5 Building Orientation

for Passive Solar

EA c5 NEW

(3 pts.)

2. Insulation EA c7 CHANGED

10/20% > IECC 2012; Grade I

3 Air Infiltration EA c6 SAME

(ACH50 or CFM50/SF)

4 Windows EA c8 CHANGED 5 Duct Leakage EA c10 SAME

Small AND Large Home Criteria

6 HVAC Equipment EA c9 SAME

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 8 Lighting EA c12 CHANGED

Calcs Required (W/SF, or % Red’n) All Exterior – Dark Sky Qualified

9 Appliances EA c13 SAME

Clothes Washer moved to WE c2

10 Renewables EA c14 CHANGED

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 1.4 Framing Efficiencies

MR c2

CHANGED (Reduced: 4 to 2 pts.) 1.5 Off‐Site Fabrication DELETED 2.1 FSC Tropical Wood

MRp1 SAME

2.2

• Envir. Preferable Products

MRc3

CHANGED Fewer Options (4 pts.) Low Emitting Products

MOVED EQ c7 (3 pts.)

3.1 Construction Waste Management DELETED 3.2 Construction Waste Reduction

MR c4

CHANGED Tied to Home Size ID 2.2 Durability Management

MR p2

CHANGED ESH v3 Water Mgmt. ID 2.3 3rd Party Durability Verification

MR C1

MOVED Durability Verification (+1 pt.)

EQ

2008 Version 4

# Name # Comment 1 ENERGY STAR with IAP REMOVED 2.1 Basic Combustion Venting EQ p2 CHANGED: Fireplace ‐ Closed

Combustion OR Combustion Safety Test

2.2 Enhanced Combustion Venting EQ c5 Same

(EPA Qualified 1 Pt.; None 2 Pts.)

3 Moisture Control REMOVED 4.1 Basic Outdoor Air Ventilation EQ p1 CHANGED

ASHRAE 62.2‐2010

4.2 Enhanced Outdoor Air Vent’n EQ c1 CHANGED

Balanced OR HRV/ERV

4.3 Third Party Performance Testing EA p1 MOVED / COMBINED

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 5.3 Third Party Performance Testing EA p1 MOVED / COMBINED

ESH v3

6.1 Room by Room Load Calcs EA p1 MOVED / COMBINED

ESH v3

6.2 Return Air /Controls EA p1 MOVED / COMBINED

ESH v3

6.3 Air Balancing EQ c3

ESH v3 (+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 EQ c2 COMBINED:

(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) 12 Compartmentalization EQ p7 EQ c4 CHANGED: 0.23 cfm50 / SF

0.15 cfm50 / SF

MR 2.2 Low Emission Products EQ c7 MOVED

AE / IN / RP

2008 Version 4

# Name # Comment 1.1 Homeowner Education O&M Manual and Training EA p3 MOVED 1.2 Enhanced Training REMOVED 1.3 Public Awareness REMOVED 2 Education of Building Mgr. MOVED / COMBINED

EA p3 (above)

IN MOVED

(5 Pts. + 1 Pt. LEED AP Homes)

RP NEW

(4 Pts.)

Example Regional Points

Vary Regionally

LT c2 Site Selection > 5 / 8 pts. LT c3 Compact Development LT c5 Access to Transit > 1 / 2 pts. SS c3 No Toxic Pest Control EA c1 Exceed ESH v3 > 15 / 29 pts. EA c3 Advanced Energy Tracking EA c6 Building Orientation for Solar

Rating System

Major Changes Removed Prereqs

MR 1.1 Framing Order Waste Factor Limit MR 3.1 Construction Waste Planning

Rating System

Major Changes

New Prereqs

LTp1 Floodplain Avoidance WEp1 Water Metering EA p2 Energy Metering MRp2 Durability Management

(ESH v3 Water Management)

EQ p6 ETS

(Multi‐Family only)

EQ p7 Compartmentalization

(0.23 cfm50 / Sq. Ft.)

Rating System

Major Changes Removed Credits (‐21 Points)

LL 3.1 Edge Development LL 4 Existing Infrastructure SS 2.2 Basic Landscape Design WE 2 High Efficiency Irrigation System MR 1.2/1.3 Detail Framing Docs / Cut List EQ 3 Moisture Load Control EQ 7.2/.3 Better / Best Air Filters EQ 8.1 Indoor Contaminants at Construction EQ 10.2 Minimize Pollutants from Garage AE 1.2/1.3 Enhanced Training / Public Awareness AE 2 Education of the Building Manager

Rating System

Major Changes ESH V3 Related Changes (‐3 pts. net)

EA p1 Includes: EA 11.1 Refrig Charge Testing EQ 4.3 OA Testing EQ 5.3 Exhaust Testing EQ 6.1 Manual D And Three New Credits: EA c4 HVAC Start‐Up Credentials MR p2/c1 Durability Mgmnt & Verification EQ 6.3 Air Balancing (EQ c3: 3 pts)

Rating System

Major Changes New Credits

LTc2 Bicycle Network/Storage (1 Pt.) WEc1 Total Water Use (12 Pts.) EA c3 Solar Ready Design (1 Pt.) EA c4 HVAC Start Up Credentialing (1 Pt.) EAc5 Advanced Utility Tracking (1 Pt.) RP Regional Priority (4 Pts.)

Rating System

Major Changes New Credits: Low‐Rise Multi‐Family

Up Front Trade Training (1 Pt.) LTc5 Access to Transit (2 Pts.) EQ p6 ETS EQc4 Enhanced Compartmentalization (1 Pt.)

Rating System

Major Changes Moved Credits

ID 1.2 (Up‐Front) Integrative Process ID 1.3 INc3 LEED AP Homes ID 2 MRp1/c1 Durability Management SS 2 WE c3 Outdoor Water Use SS 6 LTc3 Compact Development MR 2 EQc7 Low Emitting Products AE 1/2 EAp3 Education of the Homeowner

Rating System

Major Changes Subtle but Important Changes

LTc2 Bicycle Network /Storage (1 Pt.)

Example Scenarios

Rating System

Examples High Level Comparisons

(Normalized Scores)

Building Type Market Location 2008 v4 Single Family Affordable Sub‐Urban Gold 55/60 Production Sub‐Urban Silver 37/50 Custom Rural Gold 43/60 Low‐Rise Multi‐Family Affordable Urban Gold 63/60 Market Urban Gold 51/60 Mid‐Rise Multi‐Family Affordable Urban Gold 47/60 Market Urban Gold 48/60 * V4 Certification Thresholds: 40 / 50 / 60 / 80 ** Red Text indicates more than one cert level drop.

Example

Good News Small (Affordable) Urban Project

Prereqs 17

LT 15 Pts. SS c3 1 Pt. (Pest Control: 2/12) WE c2 5 Pts. (Low Flow) EA p4 10 Pts. (Home Size) EA c4 1 Pt. (HVAC Credential, ESH) EA c12/13 4 Pts. (ENERGY STAR L&A) EQ c2 2 Pts. (No Fireplace) EQ c6 2 Pts. (No Garage) Total 40 Pts. (Certified)

Rating System A Little Scary

Large (Custom) Non‐Urban Project

Prereqs 17

LT 3 Pts. (Avoid Sensitive Sites) SS c3 1 Pt. (Pest Control: 2/12) WE c2 5 Pts. (Low Flow) EA p4 ‐ 10 Pts. (Home Size) EA c4 1 Pt. (HVAC Credential, ESH) EA c12/13 4 Pts. (ENERGY STAR L&A) EQ c2 0 Pts. (Fireplace) EQ c6 0 Pts. (Garage) Total 1 Pt. (Not Certified)

Summar Summary

Credit Category 2008 Removed Version 4.0

Total # Measures Same Moved Changed New Total # 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) Total 107 27 29 7 16 10 60

Summary (cont’d)

Most Beneficial Changes (Points)

LT 1‐5 15 Points Available (+5 pts.) RP 1‐4 Regional Priority Points (+4 pts.) EA c2 DHW Distribution (+3 pts.)

Most Challenging Changes (Extra Effort)

EA p1 ENERGY STAR for Homes (documentation) EA c1 < HERS 75 for Low‐Rise Multifamily Projects WE c1 Calculation Required for “Total Water Use” EA c12 Calculation Required EE Lighting

Summary

# Measures

Current Total 109 Removed 19 Changed 38 Same 14 47% Moved 13 11% New 7 16% Version 4 Total 52 100%

Thank You

Questions?