(65 ILCS 5/11-32-1) (from Ch. 24, par. 11-32-1)
    Sec. 11-32-1. The corporate authorities of each municipality may:
    (1) provide for the regulation, safe construction, installation, alteration, inspection, testing and maintenance of heating, air conditioning and refrigerating systems specified in this section.
    (2) provide for examination, licensing and regulation of heating, air conditioning and refrigeration contractors; and fix the amount of license fees, not exceeding $50, and the terms and manner of issuing and revoking licenses of such contractors.
    (3) provide for the appointment of a board of examiners which shall examine applicants for and issue licenses to such contractors as are found capable and trustworthy.
    A. The term "heating, air conditioning and refrigeration contractor" means:
    (a) any person engaged in the business of installing, altering or servicing heating, air conditioning or refrigerating systems;
    (b) any private or municipally owned public utility if such public utility installs heating, air conditioning or refrigerating systems.
    The term "heating, air conditioning and refrigeration contractor" does not include: (i) any private or municipally owned public utility, fuel supplier or dealer that supplies fuel and services or repairs heating or air conditioning appliances or equipment in connection with or as a part of their business of supplying the fuel used in such appliances or equipment; or (ii) any liquefied petroleum gas dealer subject to "An Act to regulate the storage, transportation, sale and use of liquefied petroleum gases", approved July 11, 1955, as now or hereafter amended, and the rules and regulations of the Illinois State Police promulgated pursuant to such Act; or (iii) any electrical contractor registered or licensed as such under the provisions of this Act or any other statute.
    B. The term "heating system" means any heating unit intended to warm the atmosphere of any building or rooms therein used for human occupancy.
    C. The term "air conditioning system" means any air conditioning unit designed to cool the atmosphere of any building or rooms therein used for human occupancy, which unit has a rated heat removal capacity in excess of 20,000 British thermal units per hour; and also any such unit regardless of size or rating that is installed in such a manner that it projects from a building where pedestrian traffic will pass below it.
    D. The term "refrigerating system" means any refrigerating unit, other than an air conditioning system as defined in this section, which is to be used in conjunction with or as an aid to any commercial enterprise but does not include a refrigerating unit used for family household purposes.
    Any heating, air conditioning and refrigeration contractor properly licensed under paragraph (2) of this section in the municipality of his principal place of business in this State may install heating, air conditioning and refrigeration systems in any other municipality without securing an additional license, provided that such contractor complies with the rules and regulations of the municipality where such systems are installed.
(Source: P.A. 102-538, eff. 8-20-21.)