HVAC Contractor Permit Requirements in Charleston, SC

1. EPA Section 608 Technician Certification

   Federal law requires all HVAC technicians who purchase or handle refrigerants to be certified under EPA Section 608 of the Clean Air Act. Certification is available in Type I (small appliances), Type II (high-pressure), Type III (low-pressure), and Universal categories. Certification is obtained through an EPA-approved testing organization such as ESCO Institute or NATE.

   Official government source

   $20–$60 (exam fee)·1–2 weeks (exam scheduling)

   $20–$60 (exam fee)

   1–2 weeks (exam scheduling)

2. EIN (Employer Identification Number)

   Required if you have employees or operate as an LLC or corporation. Free from the IRS.

   Official government source

   Free·Immediate (online application)

   Free

   Immediate (online application)

1. South Carolina Contractor's Licensing Board — Mechanical Contractor License

   South Carolina requires HVAC contractors to hold a Mechanical Contractor license from the SC Contractor's Licensing Board. A qualifying party must pass a state exam. The business must carry $100,000 in general liability insurance and workers' compensation coverage.

   Official government source

   $150 application fee + $50 exam fee·6–10 weeks

   $150 application fee + $50 exam fee

   6–10 weeks

1. City of Charleston Business License + Mechanical Permit

   Charleston requires HVAC contractors to hold a city business license and obtain a mechanical permit for each installation project through the Charleston Building Inspection Division.

   Official government source

   $75–$300/year (business license) + $50–$300 per project (permit)·1–3 weeks

   $75–$300/year (business license) + $50–$300 per project (permit)

   1–3 weeks

Official Sources

• Charleston Building Inspection
• South Carolina Contractor's Licensing Board

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