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Credit language
© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Prerequisites
3.1 Reduced envelope leakage. Meet the air leakage requirements shown in Table 1. The air leakage rate must be tested and verified by an qualified energy rater.Credits
3.2 Greatly reduced envelope leakage (2 points). Meet the air leakage requirements shown in Table 1. The air leakage rate must be tested and verified by an qualified energy rater.OR
3.3 Minimal envelope leakage (3 points). Meet the air leakage requirements shown in Table 1. The air leakage rate must be tested and verified by an qualified energy rater.Table 1 Air Leakage Requirements
LEED Criteria |
Performance requirements |
|||
|---|---|---|---|---|
IECC Climate Zones |
IECC Climate Zones |
IECC Climate Zones |
||
EA 3.1: Reduced Envelope Leakage |
7.0 |
6.0 |
5.0 |
4.0 |
EA 3.2: Greatly Reduced Envelope Leakage |
5.0 |
4.25 |
3.5 |
2.75 |
EA 3.3: Minimal Envelope Leakage |
3.0 |
2.5 |
2.0 |
1.5 |
What does it cost?
Cost estimates for this credit
On each BD+C v4 credit, LEEDuser offers the wisdom of a team of architects, engineers, cost estimators, and LEED experts with hundreds of LEED projects between then. They analyzed the sustainable design strategies associated with each LEED credit, but also to assign actual costs to those strategies.
Our tab contains overall cost guidance, notes on what “soft costs” to expect, and a strategy-by-strategy breakdown of what to consider and what it might cost, in percentage premiums, actual costs, or both.
This information is also available in a full PDF download in The Cost of LEED v4 report.
Learn more about The Cost of LEED v4 »Frequently asked questions
See all forum discussions about this credit »Documentation toolkit
The motherlode of cheat sheets
LEEDuser’s Documentation Toolkit is loaded with calculators to help assess credit compliance, tracking spreadsheets for materials, sample templates to help guide your narratives and LEED Online submissions, and examples of actual submissions from certified LEED projects for you to check your work against. To get your plaque, start with the right toolkit.
© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Prerequisites
3.1 Reduced envelope leakage. Meet the air leakage requirements shown in Table 1. The air leakage rate must be tested and verified by an qualified energy rater.Credits
3.2 Greatly reduced envelope leakage (2 points). Meet the air leakage requirements shown in Table 1. The air leakage rate must be tested and verified by an qualified energy rater.OR
3.3 Minimal envelope leakage (3 points). Meet the air leakage requirements shown in Table 1. The air leakage rate must be tested and verified by an qualified energy rater.Table 1 Air Leakage Requirements
LEED Criteria |
Performance requirements |
|||
|---|---|---|---|---|
IECC Climate Zones |
IECC Climate Zones |
IECC Climate Zones |
||
EA 3.1: Reduced Envelope Leakage |
7.0 |
6.0 |
5.0 |
4.0 |
EA 3.2: Greatly Reduced Envelope Leakage |
5.0 |
4.25 |
3.5 |
2.75 |
EA 3.3: Minimal Envelope Leakage |
3.0 |
2.5 |
2.0 |
1.5 |
