N.J. Stat. § 45:16A-13
Not less than 30 days and not more than 60 days prior to the date set for the examination for a Master HVACR contractor's license, every person, except as provided in this act, desiring to apply for a license, who meets the qualifications as set forth in this act, shall deliver to the board, personally or by certified mail, return receipt requested, postage prepaid, a certified check or money order payable to the Treasurer of the State of New Jersey in the required amount, together with the written application required by the board, completed as described in the application, and together with proof of qualifications as described in this act.
The qualifications for a Master HVACR contractor's license shall be as follows: The person shall be 21 or more years of age and a citizen or legal resident of the United States, and shall have been employed in the HVACR contracting business for a period of five years next preceding the date of his application for a license. One or more of the five years shall have been spent while engaged or employed as an HVACR journeyperson or licensed plumber engaged in the work described. At least four years of the five years shall have been spent in an HVACR apprenticeship or other training program, including, but not limited to, steamfitter, pipefitter or sheet metal apprenticeship programs, approved by the United States Department of Labor, with proof of passage and successful completion of this program while actively engaged or employed as an apprentice as determined by the board. Successful completion of an HVACR program given by an accredited technical school, trade school, county college or community college shall satisfy two years of the minimum four years that must be spent in an approved apprenticeship or other training program. In lieu of the above requirements a person shall have been awarded a bachelor's degree:
Proof of compliance with the qualifications or those in lieu thereof shall be submitted to the board in writing, sworn to by the applicant, and accompanied by two recent passport-size photographs of the applicant.
N.J.S. § 45:16A-13