N.Y.C. Admin. Code § 28-303.2: § 28-303.2 Annual inspections.

Except as otherwise provided in this article, each owner of a boiler, as defined in section 204 of the New York state labor law, excepting those boilers listed in subdivision five of such section of such labor law, shall have such boiler inspected at least once a year in accordance with this article. All individuals who perform periodic inspections pursuant to this article shall be qualified under section 204 of the New York state labor law and the rules promulgated by the commissioner of labor or the commissioner of buildings.