How to Get an HVAC License in South Carolina (2026 Guide)

To start your HVAC career in South Carolina, you must understand a key distinction: the state regulates commercial and residential work through two entirely separate licensing boards. The Commercial Mechanical Contractor license is issued by the Contractor's Licensing Board, while the Residential Specialty HVAC Contractor license comes from the Residential Builders Commission. This guide provides a definitive path for navigating the requirements, recent legislative changes, and application processes for both distinct licenses.

Do You Need an HVAC License to Work in South Carolina?

Yes, a state-issued HVAC license is required for most contracting work in South Carolina, with separate classifications for residential and commercial projects exceeding specific value thresholds. The state requires a license for commercial construction projects above the value threshold and for residential work valued over a certain amount. A recent legislative change increased the minimum project value requiring a general contractor's license to $10,000. Operating without the proper license can result in significant fines, project shutdowns, and other legal penalties.

South Carolina HVAC License Classifications and Tiers

South Carolina issues two primary state-level HVAC contractor licenses: the Commercial Mechanical Contractor license, regulated by the Contractor's Licensing Board, and the Residential Specialty HVAC Contractor license, overseen by the Residential Builders Commission.

Commercial Mechanical Contractor License (SC Contractor's Licensing Board)

This license authorizes the installation, replacement, alteration, and repair of heating, ventilation, air conditioning (HVAC), process piping, and refrigeration systems in commercial, industrial, and institutional settings. The license is issued in five different financial groups (Group 1 through Group 5) that set limitations on the value of projects you can bid on and undertake.

Residential Specialty HVAC Contractor License (SC Residential Builders Commission)

This license covers the installation, repair, and service of HVAC systems specifically within residential buildings. This classification is for contractors who focus exclusively on the residential market.

South Carolina Commercial Mechanical Contractor License: Requirements & Application Process

Step 1: Meet Experience Requirements

To qualify for a Commercial Mechanical Contractor license in South Carolina, the applicant must designate a Primary Qualifying Party (PQP) for each classification or subclassification. The PQP must have at least 2 years of work experience in a supervisory role (such as journeyman, foreman, supervisor, or contractor) within the last 5 years. Experience requirements must be met and exams completed before the contracting entity can apply. You will need to provide detailed documentation of this experience, often through affidavits from past employers, client contracts, or other proof of self-employment, unless applying for a waiver/reciprocity.

Step 2: Ensure Financial Responsibility

Commercial Mechanical Contractors in South Carolina must demonstrate financial responsibility via a financial statement review or by submitting a surety bond. The requirements scale based on the license group and job bidding limits:

• Group 1: Bidding limit up to $35,000; surety bond alternative is $7,000.
• Group 2: Bidding limit up to $100,000; surety bond alternative is $15,000.
• Group 3: Bidding limit up to $200,000; surety bond alternative is $30,000.
• Group 4: Bidding limit up to $400,000; surety bond alternative is $60,000.
• Group 5: Bidding limit is unlimited; surety bond alternative is $300,000.

Step 3: Pass Required Exams

Applicants for the Commercial Mechanical Contractor license must pass both the specific HVAC technical trade exam and the South Carolina Business Management and Law Exam, both administered by PSI Exams. You must also hold a federally mandated EPA Section 608 Technician Certification to handle refrigerants. Be sure to check the most current PSI Candidate Information Bulletin for details on exam content, scheduling, and fees.

Step 4: Submit Your Application

Once you have met the experience, financial, and examination requirements, you can submit your complete application package to the South Carolina Contractor's Licensing Board.

1. Obtain and complete the application from the board's official website.
2. Gather all required documents.
3. Pay the required fees. The initial license fee for commercial mechanical contractors is $350. The renewal fee is $135 if renewed by October 31 of odd-numbered years.
4. Submit the application package online through the LLR portal or as directed by the board.

Your application checklist will include:

• Completed application form
• Passing score sheets from PSI for the technical and law exams
• Proof of experience (affidavits, etc.)
• Financial statement or original surety bond
• Proof of EPA 608 Certification
• Application fee

South Carolina Residential Specialty HVAC Contractor License: Requirements & Application Process

Step 1: Meet Experience Requirements

To become a Residential Specialty HVAC Contractor in South Carolina, applicants need at least 1 year of experience working under a licensed residential builder or a licensed HVAC contractor within the last 5 years. This experience must be documented and verifiable.

Step 2: Obtain a Surety Bond

Residential Specialty HVAC Contractors are required to obtain a $10,000 surety bond if they undertake work exceeding $5,000 in value on a single project. This bond protects the consumer from financial harm due to non-performance or faulty work.

Step 3: Pass Required Exams / Certifications

All state-level HVAC licensing exams in South Carolina are administered by PSI Exams, and candidates must generally pass a technical trade exam and the South Carolina Business Management and Law Exam. Residential applicants must also hold a federal EPA Section 608 Certification. To ensure you register for the correct tests under the Residential Builders Commission, confirm that you register for the Residential Air Conditioning exam and the Business Management and Law exam.

Step 4: Submit Your Application

After fulfilling the experience, bond, and exam prerequisites, you can apply to the Residential Builders Commission.

1. Complete the official application form for a Residential Specialty Contractor.
2. Assemble your supporting documents.
3. Pay the required fees. The Residential Builders Commission charges an application fee of $100, a license fee of $220, and a renewal fee of $220 (with a late fee of $50 and reinstatement fee of $480).
4. Submit your complete application package to the commission.

Your application checklist will include:

• Completed application form
• Proof of one year of qualifying experience
• Original $10,000 surety bond
• Proof of passing exam scores, if applicable
• Copy of your EPA 608 Certification card
• Applicable fees

Federal EPA Section 608 Certification for HVAC Technicians

In addition to state-specific licensing, any technician who works with refrigerants in South Carolina (or any US state) must obtain an EPA Section 608 Technician Certification, as mandated by federal law. This certification is required for anyone who maintains, services, repairs, or disposes of equipment that could release refrigerants into the atmosphere. There are four types of certification:

• Type I: For servicing small appliances.
• Type II: For servicing high-pressure appliances.
• Type III: For servicing low-pressure appliances.
• Universal: For servicing all types of equipment.

Certification is obtained by passing a proctored exam from an EPA-approved organization.

South Carolina HVAC License Renewal and Continuing Education

License Renewal Cycle

South Carolina HVAC licenses must be renewed biennially (every two years). Both Commercial Mechanical Contractor licenses and Residential Specialty HVAC Contractor licenses expire and must be renewed in odd-numbered years. Specifically, commercial mechanical contractor licenses expire on October 31 of odd-numbered years (with a renewal fee of $135). A recent law change allows licenses that have lapsed to be renewed within 90 days of expiration by submitting a renewal application and paying both renewal and late fees; this renewal is retroactive to the expiration date.

Continuing Education Requirements

No state-level continuing education (CE) requirements were identified for mechanical contractors or residential specialty HVAC licensees in South Carolina under LLR guidelines. However, it is crucial to check with local municipalities, as some may impose their own CE requirements for local business license renewals or permits.

South Carolina HVAC License Reciprocity and Endorsement

South Carolina LLR offers limited reciprocal technical exam agreements for commercial mechanical contractor licensing with Alabama, Georgia, Mississippi, North Carolina, and Ohio, though candidates must still pass the South Carolina Business Management and Law exam. For the Residential Specialty HVAC license (RBH), the Residential Builders Commission has technical exam waiver agreements with Alabama, North Carolina, and Mississippi only, and the SC Business Management and Law exam is still required.

Recent Legislative Changes Impacting SC HVAC Licensing (2023-2026)

South Carolina has implemented several significant legislative and regulatory changes in recent years that impact HVAC contractors, affecting project thresholds, bond requirements, and even exam providers.

Carolinas AGC (CAGC) Program Provider Transition

As of January 1, 2026, Carolinas AGC (CAGC) is the official South Carolina Mechanical Trades Certification Program provider; MASC certification applicants should contact CAGC for verification.

2025: Project Value Thresholds and Licensing Classifications Amended

The minimum project value that triggers the need for a general contractor's license was increased from $5,000 to $10,000. Additionally, licensing classifications were restructured to clarify contractor roles.

2024: Surety Bond Coverage Term Updated

A new rule effective May 24, 2024, mandates that surety bonds must cover the full two-year licensure period, from July 1 of an odd year to June 30 of the next odd year.

2023: Legislative Changes from SC House Bill 4115

This major bill, effective May 26, 2023, brought several key changes:

• Increased Financial Requirements: Net worth, licensing, and surety bond requirements for general and mechanical contractors were updated.
• Lapsed License Renewals: A 90-day grace period for renewing expired licenses was established.
• Surety Bond Provisions: The range for mechanical contractor surety bonds was confirmed at $7,000 to $300,000, depending on the license group.

Ready to Get Your South Carolina HVAC License?

Navigating the specific requirements for either the commercial or residential board is the first step toward a successful and compliant career in South Carolina. By carefully following the steps for experience verification, financial responsibility, and examination, you can build a strong application and launch your business.