Proposed Changes by Subject—National Energy Code for Buildings 2025

National Energy Code for Buildings 2025 (Proposed changes to 3 provisions)

Airtightness

(Proposed changes to 1 provision)

Div.B 8.4.2.9. Air Leakage

Heating, Ventilating and Air-conditioning Systems - Other

(Proposed changes to 2 provisions)

Div.B 5.2.3.1. Application

Div.B 5.2.12.1. Unitary and Packaged HVAC Equipment

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