South Dakota 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.

South Dakota does not issue a master HVAC, mechanical or refrigeration license and has no state board for the trade; only the State Fire Marshal's boiler inspection program exists at state level, and it certifies boilers, not installers. The master-level credential exists only in cities that license mechanical contracting. In Sioux Falls the person-held credential is the Master Mechanic, earned by documenting four years of experience (2,000 hours per year) with a licensed mechanical contractor and passing the city's four-hour open-book exam on the International Mechanical and Fuel Gas Codes ($75, 75% to pass); the master mechanic then qualifies a Mechanical Contractor license ($200 for two years, $10,000 compliance bond, liability insurance), and a separate Refrigeration Contractor license is earned by a shorter IMC exam. In Rapid City the Mechanical Contractor (Class C trade) license is issued to a firm whose designated license holder has six years of verifiable experience, passes the city exam, and carries $1,000,000 liability insurance; it runs three years with six hours of continuing education. Neither city recognizes out-of-state licenses: Sioux Falls says it does not reciprocate any license and requires its exam of everyone, and Rapid City's code recognizes other agencies' licenses only for general building contractor classes. An out-of-state master or HVAC contractor should expect to sit the local exam in each city where they contract.