Large residential buildings.
Municipal Code of Chicago § 14X-8-803.4
in effect14X-8-803.4 Large residential buildings.
Buildings of Group R (residential) occupancy that contain more than 100 dwelling units or sleeping units or that are high-rise buildings must be provided with permanent cooling and dehumidification equipment capable of maintaining a room temperature of 75ºF (24ºC) and 50 percent relative humidity in at least one indoor common gathering space when the outdoor temperature is 92ºF (33ºC) and the mean coincident wet bulb temperature is 74ºF (23ºC).
Exception: Prior to May 1, 2024, portable equipment may be used to meet this requirement.
(Added Coun. J. 6-22-22, p. 49372, § 7)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2698005Fetched: 10/24/2026
