South Carolina HVAC License Renewal — Deadlines, Fees, and Late Penalties

Two Boards, Two Deadlines

South Carolina's dual-board HVAC licensing system means two separate renewal calendars. Missing the wrong one — or assuming both boards operate on the same schedule — can cost you late fees or your license.

Commercial Mechanical Contractor Renewal (CLB)

• Deadline: October 31 of odd-numbered years (next: October 31, 2027)
• Renewal fee: $135
• Late fee: $100–$200 for renewals postmarked between November 1 and January 31
• Reinstatement (after January 31): $350 plus a fresh application
• Continuing education: None required at the state level

At renewal, you must submit current financial documentation appropriate to your group — an owner-prepared statement where permitted, the applicable CPA-prepared statement, or a surety bond or continuation certificate showing the bond remains active and in force. The CLB also verifies that your Primary Qualifying Party (PQP) is still active. If your PQP departed and you did not designate a replacement within the 90-day statutory window, your license may already be lapsed regardless of renewal status.

General liability insurance documentation must also be current at renewal. The CLB requires at least $100,000 in comprehensive general liability on file, though most municipal building departments and commercial project owners require $300,000 to $1,000,000.

Residential RBH License Renewal (RBC)

• Deadline: June 30 of odd-numbered years (next: June 30, 2027)
• Renewal fee: $220
• Late-renewal total: $270 ($220 renewal fee + $50 late fee) for renewals postmarked after June 30
• Reinstatement (lapsed under 3 years): $480
• Continuing education: None required

The residential renewal is simpler — pay the fee, confirm your information is current, and maintain your surety bond if applicable. The RBC does not require updated financial statements or CPA documentation at renewal.

No Continuing Education Requirement

South Carolina is one of the states that does not require continuing education (CE) hours for HVAC license renewal under either board. There are no mandatory training courses, no CE credit tracking, and no proof-of-completion submissions. You pay the renewal fee, update your documentation, and your license continues.

This applies specifically to the state-level LLR license. Some voluntary certifications — like the CAGC SC Trades Certification — have their own renewal requirements (biennial renewal through CAGC with ProV-administered testing), but those are separate from the state license.

What Happens If You Lapse

Operating on a lapsed license is not a gray area. Performing HVAC work without a current license constitutes unlicensed contracting — a misdemeanor carrying fines, potential imprisonment, and the inability to enforce contracts or file mechanic's liens.

The reinstatement path depends on how long your license has been lapsed:

• Commercial (CLB): During the late-renewal window, pay the $135 renewal fee plus the applicable $100–$200 late fee. After January 31, reinstatement costs $350 and requires a new application.
• Residential (RBC): Reinstatement within three years of lapse costs $480. Beyond three years, you must reapply, including retaking the PSI exams.

The cost difference between an on-time renewal and reinstatement is significant — $135 vs. $350 for commercial, $220 vs. $480 for residential. Calendar the deadline.

For a complete renewal checklist covering both tracks — including what to prepare before your renewal cycle and how to handle a PQP transition during renewal — the South Carolina HVAC License Guide covers the full post-licensure compliance timeline.

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