(1) have been regularly and principally employed in providing heating, ventilation, air-conditioning, or refrigeration services under a journeyman, journeyman restricted, limited, or master restricted license for not less than 3 years of active experience under the direction and control of a master heating, ventilation, air-conditioning, and refrigeration contractor and have been so employed for not less than 1,875 hours in the year prior to application; and

(2) pass an examination administered by the Board.

(1) have been regularly and principally employed in providing refrigeration, air-conditioning, forced air heating, hydronic heating, or ventilation services under a journeyman, journeyman restricted, limited, or master restricted license for not less than 3 years of active experience under the direction and control of a master or master restricted heating, ventilation, air-conditioning, and refrigeration contractor and have been so employed for not less than 1,875 hours in the year prior to application; and

(2) pass an examination administered by the Board.

(1) have been regularly and principally employed in providing forced air heating, hydronic heating, ventilation, air-conditioning, or refrigeration services under a journeyman license for not less than 2 years of active experience under the direction and control of the holder of a master, master restricted, or limited license under this title, and have been so employed for not less than 1,000 hours in the year prior to application; and

(2) pass an examination administered by the Board.

(1) have held, for a period of at least 4 years, an apprentice license, and during that period shall have completed at least 6,000 hours of training in providing heating, ventilation, air-conditioning, and refrigeration services under the direction and control of a licensed contractor; and

(2) pass an examination administered by the Board.

(1) have held, for a period of at least 3 years, an apprentice license, and during that period shall have completed at least 1,875 hours of training in providing forced air heating, hydronic heating, ventilation, air-conditioning, or refrigeration services under the direction and control of a licensed contractor; and

(2) pass an examination administered by the Board.

(2) The Board may credit not more than 6 years of work experience in heating, ventilation, air-conditioning, or refrigeration services that fails to meet the requirements of subsection (b)(1), (c)(1), (d)(1), (e)(1), or (f)(1) of this section if, in the opinion of the Board:

(3) The Board shall credit not more than 3 years of work experience in heating, ventilation, air-conditioning, or refrigeration services to any applicant under this section who has been teaching formal courses of study in heating, ventilation, air-conditioning, or refrigeration services for purposes of satisfying the requirements of subsections (b)(1), (c)(1), (d)(1), (e)(1), or (f)(1) of this section.