Chapter 4 — RESIDENTIAL MANDATORY MEASURES

Section 4.507 — ENVIRONMENTAL COMFORT

2025 California Green Building Standards Code (Title 24, Part 11) · 2025 edition · ingested 2026-07-07 · California

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4.507.1 Reserved. on Jul 18, 2025 11:14 AM (CDT) THEREUNDER. RESIDENTIAL MANDATORY MEASURES 4.507.2 Heating and air-conditioning system design. Heating and air-conditioning systems shall be sized, designed and have their equipment selected using the following methods: 1. The heat loss and heat gain is established according to ANSI/ACCA 2 Manual J—2016 ( Residential Load Calculation ), ASHRAE handbooks or other equivalent design software or methods. 2. Duct systems are sized according to ANSI/ACCA 1 Manual D—2016 ( Residential Duct Systems ), ASHRAE handbooks or other equivalent design…