South Carolina HVAC License Requirements

Official classification: Mechanical Contractor - Air Conditioning / Heating [commercial]; Residential Specialty Contractor - HVAC [residential] · Issued by the SC Contractor's Licensing Board (commercial) and SC Residential Builders Commission (residential), under the SC Department of Labor, Licensing and Regulation (LLR).

❄️ HVACSC ✔ Verified 2026-06-19

In South Carolina, HVAC contractors must hold the Mechanical Contractor - Air Conditioning / Heating [commercial]; Residential Specialty Contractor - HVAC [residential], issued by the SC Contractor's Licensing Board (commercial) and SC Residential Builders Commission (residential), under the SC Department of Labor, Licensing and Regulation (LLR), and a $10,000 surety bond is required. Full requirements — experience, exams, fees, insurance, renewal and reciprocity — are detailed below.

How to become a licensed HVAC contractor in South Carolina

Follow these steps to earn your Mechanical Contractor - Air Conditioning / Heating [commercial]; Residential Specialty Contractor - HVAC [residential]. Every figure is verified against the SC Contractor's Licensing Board (commercial) and SC Residential Builders Commission (residential), under the SC Department of Labor, Licensing and Regulation (LLR); full detail for each step is further down the page.

1. Build the required experience. Commercial (CLB): qualifying party needs about 2 years of experience (or a completed apprenticeship). Residential: at least 1 year of HVAC experience within the past 5 years.
2. Pass the Air Conditioning technical exam (Heating/Refrigeration/Pressure-Process Piping are separate subclass exams) and SC Business Management and Law for Commercial Contractors exams. Providers, passing scores and fees are in the Exams section below.
3. Secure your surety bond. South Carolina requires $10,000 minimum surety bond for a residential licensed HVAC specialty contractor on any job over $5,000 (S.C. Code Regs. 106-2). The commercial license has no fixed bond; a surety bond may be posted in lieu of a financial statement to set the Group bid limit.
4. Check the insurance rules. Liability: Not mandated by the board for issuance. Workers' compensation: Required under SC law if you have employees (generally 4 or more); not collected by the board at licensing.
5. Clear the background check. Notarized Verification of Lawful Presence required. Residential Builders Commission applicants submit a SLED criminal history check only if they have prior arrests or convictions; no fingerprint check is required.
6. Meet the credit / financial requirement. Commercial: a financial statement sets the bid Group — self-prepared and notarized for Groups 1-2, CPA-compiled for Groups 3-4 (an owner-prepared statement is also accepted at renewal), and for Group 5 a CPA-audited balance sheet at initial licensure or a CPA-reviewed statement at renewal — or a surety bond may substitute. Residential: no net-worth tier; a bond substitutes.
7. Submit your application and fees. Apply through the SC Contractor's Licensing Board (commercial) and SC Residential Builders Commission (residential), under the SC Department of Labor, Licensing and Regulation (LLR) — $350 (CLB commercial); residential specialty application fee is lower application fee, plus a $350 (CLB commercial) license fee. Processing time: Variable; typically a few weeks after exams and a complete application.
8. Keep the license active. Renewal: Every 2 years. Commercial mechanical licenses (Contractor's Licensing Board) expire October 31 of odd-numbered years; the Residential Builders Commission's current renewal period is 2026-2028 (deadline June 30, 2026).

For the general path in every state, see the HVAC guide →

South Carolina HVAC contractor license lookup

To confirm an HVAC contractor is properly licensed in South Carolina — or to check the status of your own license — search the issuing agency's official license database. The record shows whether the license is active and in good standing.

License types

• Mechanical Contractor - Air Conditioning / Heating — Commercial HVAC work on projects of $10,000 or more (with related Refrigeration and Pressure/Process Piping subclasses); bid limit set by financial Group (Mechanical Contractor limits per job: Group 1 $35,000 / Group 2 $100,000 / Group 3 $200,000 / Group 4 $400,000 / Group 5 unlimited — lower than the General Contractor groups).
• Residential Specialty Contractor - HVAC — Residential heating and air conditioning work, licensed under the Residential Builders Commission.

Requirements at a glance

What a South Carolina hvac license costs

Exams

Renewing a South Carolina HVAC contractor license

The Mechanical Contractor - Air Conditioning / Heating [commercial]; Residential Specialty Contractor - HVAC [residential] renews on a fixed cycle set by the SC Contractor's Licensing Board (commercial) and SC Residential Builders Commission (residential), under the SC Department of Labor, Licensing and Regulation (LLR). Late and lapsed renewals are handled differently by every board, so check the renewal page linked below before the deadline passes.

Local / municipal notes

SC licenses HVAC as a Mechanical Contractor subclassification (commercial) or a Residential Specialty (residential). EPA Section 608 certification is separately required nationwide to handle refrigerants.

Frequently asked questions

Official sources

llr.sc.gov/clb/clb_licensure.aspx
llr.sc.gov/res/renewals.aspx
scstatehouse.gov/coderegs/Chapter 106.pdf
scstatehouse.gov/code/t40c011.php
scstatehouse.gov/code/t40c059.php
llr.sc.gov/clb/fees.aspx
llr.sc.gov/res/licensure.aspx

Other South Carolina contractor licenses

HVAC licensing in other states