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Carbon monoxide alarms.

Municipal Code of Chicago § 14X-5-504.9
in effect
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14X-5-504.9 Carbon monoxide alarms. Carbon monoxide alarms must be provided in existing structures in accordance with Sections 14X-5-504.9.1 through 14X-5-504.9.3. Installation must be in accordance with Section 915.4 of the Chicago Building Code. Exceptions: 1. Carbon monoxide alarms are allowed to be solely battery operated where the code that was in effect at the time of installation did not require hard-wired carbon monoxide detectors to be provided. 2. A carbon monoxide detection system in accordance with Section 915.5 of the Chicago Building Code is an acceptable alternative to carbon monoxide alarms. 3. A carbon monoxide alarm is not required by this section in any occupancy or at any location where a carbon monoxide alarm is not required by Section 915 of the Chicago Building Code.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2675851Fetched: 10/24/2026

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