Nevada to South Carolina: master HVAC technician license reciprocity

South Carolina has no 'master HVAC' license. The highest person-held HVAC credential is the Contractor's Licensing Board's Qualifying Party certification in the Air Conditioning (AC), Heating (HT), Refrigeration (RG) or Packaged Equipment (PK, up to 25 tons and 500,000 BTU per unit) classification of the Mechanical Contractor license: the individual passes the South Carolina technical exam for each classification through PSI and the South Carolina Business Management & Law for Commercial Contractors exam, documents two years of experience within the past five (or a PHCC Academy of North Carolina heating and air-conditioning apprenticeship), and is certified as the qualifying party for a licensed entity (which may be a sole proprietorship); the certification stays with the person, who 'is not a licensed contractor' alone. The license itself is issued to the business, with a $350 licensure fee and a financial statement or surety bond sized by license group (Mechanical Group 2, jobs to $100,000: working capital $10,000 or net worth $15,000, or a $15,000 bond). A residential-only alternative is the Residential Builders Commission's Residential HVAC Installer and Repairer license ($135 application, $220 license), issued to the individual after one year of residential HVAC experience and the residential technical plus Business Management and Law exams. South Carolina has technical-exam waiver agreements, listed in the Board's Technical Exam Waiver Agreement List (revised May 2026), covering HVAC classifications for Alabama (Heating and Air Conditioning, Refrigeration), Georgia (Unrestricted Conditioned Air), Louisiana (Statewide Mechanical), North Carolina (Heating Groups 1, 2 and 3), Ohio (HVAC, packaged equipment only), Tennessee (CMC and CMC-C), Texas (Class A and Class B air conditioning and refrigeration) and Utah (HVAC, warm air heating, refrigerated air conditioning and refrigeration exams passed before May 2017), plus the MASC/CAGC HARV Master Mechanical card. Alabama, Mississippi and North Carolina licenses obtained by exam and held for a year also waive the technical exam for the residential license. Every waiver applicant must still pass the South Carolina Business Management & Law exam. Licensees from other states take the South Carolina technical exam. EPA Section 608 certification is a separate federal requirement.

Nevada does not issue a master HVAC or master refrigeration license, and no county or city was found to issue a master-level HVAC card (Clark County and Las Vegas recognize a 'mechanical qualified individual', which is simply the person who qualifies a contractor's C-21 license with the State Board). The state-level credential is a classification C-21 Refrigeration and Air-Conditioning Contracting license from the Nevada State Contractors Board (NSCB), issued to a sole proprietor, partnership, corporation or LLC and qualified by a named individual rather than held by the mechanic personally, with subclassifications for refrigeration (C-21a), air-conditioning (C-21b), sheet metal, maintenance, solar, chilled and hot water systems and industrial piping. An out-of-state master HVAC licensee who only wants to work for an employer needs no Nevada license at all (apart from the local journeyman card in Clark County and Las Vegas). To contract, the qualifying individual must show four years of experience as a journeyman, foreman, supervising employee or contractor within the past 15 years (NRS 624.260), pass the PSI-administered Nevada Business and Law exam and the C-21 trade exam within six months of filing (three attempts each), and the business must pay the $300 application fee and $600 biennial license fee, submit a financial statement, fingerprints and background check, and post a bond of $1,000 to $500,000 set by the Board, plus the Residential Recovery Fund assessment if it does residential work. Under licensure by endorsement (NAC 624.600 and 624.615) the C-21 trade exam and the experience certification are waived for a qualified individual who has held an active license with no discipline for the past four years in Arizona (CR-79 Air Conditioning and Refrigeration Including Solar, as the Board prints it), California (C-20 together with C-38), Connecticut (S-1 Unlimited Heating, Piping and Cooling), Louisiana (10 Mechanical Work statewide) or Tennessee (CMC Full Mechanical Contractor), documented with a License Verification Form from that state; the Business and Law exam is never waived, and no other state's chart contains an HVAC row. EPA Section 608 certification is a separate federal requirement for anyone who handles refrigerants.