For AI agents: read the machine-readable documentation index at /llms.txt or the single-file full reference at /llms-full.txt.
Form a Business

§ 18-28-514.4 — Recirculated air

Municipal Code of Chicago (2026 S-74, current through Council Journal of June 17, 2026) · Municipal Code of Chicago § 18-28-514.4

Corpus is an independent public-information project, not the official City of Chicago website. Stable reference URL

18-28-514.4 Recirculated air.

Air conveyed within energy recovery ventilation systems shall not be considered as recirculated air where the energy recovery ventilation system is constructed to limit cross-leakage between air streams to less than 10 percent of the total airflow design capacity. (Added Coun. J. 9-14-21, p. 35949, Art. V, § 27)