Model Codes › IECC 2021
International Energy Conservation Code
IECC 2021 · International Code Council
This is the model code as published. It carries no state or local amendments. Most jurisdictions adopt an I-Code with amendments, and many are on a different edition — check what yours has adopted on its jurisdiction page before relying on anything here.
349 sections across 6 chapters on BuildSpec
Chapters
Chapter 1
Scope and Administration
37 sections →
Chapter 2
Definitions
3 sections →
Chapter 3
General Requirements
38 sections →
Chapter 4
Commercial and Residential Energy Efficiency
172 sections →
Chapter 5
Existing Buildings
44 sections →
Chapter 6
Referenced Standards
1 section →
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