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

Standards.

Municipal Code of Chicago § 18-29-501.2
in effect
Sign in to generate a plain English summaryAsk Belisarius Agent
18-29-501.2 Standards. Domestic electric water heaters shall be listed in accordance with UL 174 or UL 1453 and be installed in accordance with the Chicago Electrical Code. Commercial electric water heaters shall be listed in accordance with UL 1453 and be installed in accordance with the Chicago Electrical Code. Fuel gas-fired water heaters shall be listed in accordance with ANSI Z21.10.1/CSA 4.1 or ANSI Z21.10.3/CSA 4.3 and be installed in accordance with the Chicago Fuel Gas Code. Oil-fired water heaters shall be listed in accordance with UL 732 and be installed in accordance with the Chicago Mechanical Code. Solid-fuel-fired water heaters shall be listed in accordance with UL 2523 and be installed in accordance with the Chicago Mechanical Code. Solar thermal water heating systems shall comply with Chapter 14 of the Chicago Mechanical Code and ICC 900/SRCC 300. (Amend Coun. J. 6-17-26, p. 45214, Art. IV, § 38)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2691264Fetched: 10/24/2026

Starting a business in Illinois? Illinois LLC guide: costs and requirements

18-29-501.2 | Corpus