(A) No person, firm, or corporation shall engage in the business of installing, maintaining, altering, or repairing for others within the city any plumbing, heating, or air conditioning apparatus as governed by this code unless the person, firm, or corporation shall have received a registration certificate.
(B) Any person employed by and working under the direction of a holder of a registration certificate as helper is exempted. No certificate will be required for minor repair work or for the owner doing work on their own property.
(1981 Code, § 152.43) (Ord. 6572-93, passed 12-13-1993; Am. Ord. 18-08-053, passed 12-26-2018)