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 no state 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.
- 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.
- 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.
- Secure your surety bond. South Carolina requires No fixed state bond for the commercial license; a surety bond may substitute for the financial statement to set the Group bid limit. A residential licensed HVAC specialty requires a $10,000 surety bond when a job exceeds $5,000.
- Line up insurance. You'll need liability insurance (Not mandated by the board for issuance), and workers' compensation coverage.
- Clear the background check. Notarized Verification of Lawful Presence required; no fingerprint/criminal background check mandated for issuance.
- 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, and CPA-reviewed for Group 5 — or a surety bond may substitute. Residential: no net-worth tier; a bond substitutes.
- 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.
- Keep the license active. Renew every 2 years (biennial). CLB mechanical renews by Oct 31 of odd-numbered years; the residential commission renews by June 30 of odd-numbered years.
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
| Experience required | 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. |
|---|---|
| Application fee | $350 (CLB commercial); residential specialty application fee is lower |
| License fee | $350 (CLB commercial) |
| Renewal fee | $135 biennial (CLB commercial); late penalties $100/$150/$200 at 30/60/90 days |
| Renewal period | Every 2 years (biennial). CLB mechanical renews by Oct 31 of odd-numbered years; the residential commission renews by June 30 of odd-numbered years. |
| Continuing education | None required |
| Bond required | No fixed state bond for the commercial license; a surety bond may substitute for the financial statement to set the Group bid limit. A residential licensed HVAC specialty requires a $10,000 surety bond when a job exceeds $5,000. |
| Liability insurance | Not mandated by the board for issuance |
| Property damage | — |
| Workers' comp | Required under SC law if you have employees (generally 4 or more); not collected by the board at licensing |
| Background check | Notarized Verification of Lawful Presence required; no fingerprint/criminal background check mandated for issuance. |
| Credit requirement | Commercial: a financial statement sets the bid Group — self-prepared and notarized for Groups 1-2, CPA-compiled for Groups 3-4, and CPA-reviewed for Group 5 — or a surety bond may substitute. Residential: no net-worth tier; a bond substitutes. |
| Reciprocity | Technical-exam waivers are available with some states (varies by subclassification); the SC Business/Law exam is still required. Confirm the current agreement with the board. |
| Processing time | Variable; typically a few weeks after exams and a complete application. |
Exams
| Air Conditioning technical exam (Heating/Refrigeration/Pressure-Process Piping are separate subclass exams) | Provider: PSI · Passing: 70% (commonly cited; confirm with the board) · Fee: Approximately $60-$75 depending on subclass |
|---|---|
| SC Business Management and Law for Commercial Contractors | Provider: PSI · Passing: 70% (commonly cited; confirm with the board) · Fee: Approximately $75 |
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
How much does a South Carolina hvac license cost?
Application: $350 (CLB commercial); residential specialty application fee is lower. License: $350 (CLB commercial). Renewal: $135 biennial (CLB commercial); late penalties $100/$150/$200 at 30/60/90 days.
How do I look up a hvac license in South Carolina?
Search the official license database at verify.llronline.com. The record shows whether the license is active and in good standing.
Do hvacs in South Carolina need a surety bond?
No fixed state bond for the commercial license; a surety bond may substitute for the financial statement to set the Group bid limit. A residential licensed HVAC specialty requires a $10,000 surety bond when a job exceeds $5,000.
What experience is required for a South Carolina hvac license?
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.
Is insurance required for hvacs in South Carolina?
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
How often must a South Carolina hvac license be renewed?
Every 2 years (biennial). CLB mechanical renews by Oct 31 of odd-numbered years; the residential commission renews by June 30 of odd-numbered years..
Official sources
scstatehouse.gov/code/t40c011.php
scstatehouse.gov/code/t40c059.php
llr.sc.gov/clb/fees.aspx
llr.sc.gov/res/licensure.aspx