Intent
Minimize energy consumption caused by uncontrolled air leakage into and out of conditioned spaces.
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 (in ACH50) |
|||
|---|---|---|---|---|
| IECC Climate Zones 1-2 |
IECC Climate Zones 3-4 |
IECC Climate Zones 5-7 |
IECC Climate Zone 8 |
|
| EA 3.1: Reduced Envelope Leakage (mandatory) |
7.0 | 6.0 | 5.0 | 4.0 |
| EA 3.2: Greatly Reduced Envelope Leakage (optional) |
5.0 | 4.25 | 3.5 | 2.75 |
| EA 3.3: Minimal Envelope Leakage (optional) |
3.0 | 2.5 | 2.0 | 1.5 |
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