Chapter 3 — NONRESIDENTIAL, HOTEL/MOTEL OCCUPANCIES,
Section 120.10 — MANDATORY REQUIREMENTS FOR FANS
2025 California Energy Code (Title 24, Part 6) · 2025 edition · ingested 2026-07-07 · California
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(a) Each fan or fan array with a combined motor nameplate horsepower greater than 1.00 hp or with a combined fan nameplate electrical input power greater than 0.89 kW shall have a fan energy index (FEI) of 1.00 or higher at fan system design conditions. Each fan and fan array used for a variable-air-volume system that meets the requirements of Section 140.4(c)2 shall have an FEI of 0.95 or higher at fan system design conditions. 1. The FEI for fan arrays shall be calculated in accordance with ANSI/AMCA 208-18 Annex C. 2. All FEI values shall be provided by a manufacturer, where fan selection…