South Carolina HVAC Primary Qualifying Party

What a Primary Qualifying Party Is

Every commercial mechanical contractor license issued by South Carolina's Contractor's Licensing Board (CLB) must be tied to a specific individual — the Primary Qualifying Party, or PQP. The PQP is the person who carries the technical credentials for the company's license.

The business entity (LLC, corporation, partnership) holds the contractor license. But that license only remains valid as long as a qualified individual is designated as the PQP. Think of it as the person who "qualifies" the company to do business — without them, the license has no technical foundation.

This structure means the PQP role carries real weight. The PQP's name appears on the license, and the PQP's exam scores and experience support the application.

PQP Requirements

To serve as a PQP for a commercial mechanical contractor, you must meet these requirements:

Experience: At least two years of primarily commercial mechanical experience within the past five years in the specific trade subclassification(s) the company is applying for — Air Conditioning, Heating, Packaged Equipment, or Refrigeration. This experience must be documented through LLR Document 167 (the Work Experience Affidavit) with corroborating tax records.

Alternatively, completion of a four-year apprenticeship through the PHCC Academy of North Carolina satisfies the experience requirement.

Examinations: You must pass both the commercial trade exam (specific to your subclassification) and the South Carolina Commercial Business Management and Law exam through PSI. Both exams are open-book and administered at regional PSI testing centers.

If you hold a current CAGC (formerly MASC) trades certification, the technical trade exam may be waived — but the Business Management and Law exam is always required.

Supervision role: If your qualifying experience was supervisory, document the field activities you supervised. The PQP is the individual tied to the company's technical qualifications, not a paper credential.

How to Register as a PQP

The PQP application is filed using Document 168 (PQP Initial Application), submitted together with Document 165 (the business entity application) and Document 167 (the experience affidavit). There's no separate fee for Doc 168 — it's included in the $350 initial application fee for Doc 165.

You'll attach your PSI exam pass sheets to Doc 168 as proof of qualification. The CLB reviews the complete package — Doc 165, 168, and 167 together — and either approves or requests additional documentation.

Unlike the residential track, the CLB does not require pre-approval before you take the PSI exams. You can schedule and pass both exams, then submit the full application package with your pass sheets. This gives you flexibility to test on your own timeline.

The 90-Day Replacement Rule

This is the rule that creates the most urgency around the PQP role. If the PQP leaves the firm — quits, retires, dies, or is removed — the business entity has exactly 90 days to designate and qualify a replacement PQP with the CLB.

During that 90-day window, the company has time to designate and qualify a new PQP. If no replacement is qualified within 90 days, the company's license automatically lapses. That means all contracting authority stops — no bidding, no pulling permits, no performing work above the $10,000 threshold.

Reinstating a lapsed license after a PQP departure requires qualifying a new PQP and completing the CLB's current application and board-review requirements. The replacement may need new exams or experience documentation if they do not already have the required qualifications. For a company with active projects and outstanding bids, a lapsed license can be catastrophic.

Protecting Your Business from PQP Departures

If your company's license depends on a single PQP and that person has leverage — because they know it — this is a structural business risk. Practical mitigations:

Employment agreements: Work with a corporate attorney to structure the PQP's employment contract with reasonable notice requirements (60 to 90 days) so you have time to qualify a replacement before the departure takes effect.

Develop backup qualifiers: Invest in getting a second employee qualified — passing the PSI exams and accumulating documented commercial experience. Having a qualified backup means a PQP departure triggers a paperwork exercise, not an existential crisis.

Track the renewal cycle: The PQP's qualification must be verified at each biennial license renewal (October 31 of odd-numbered years). Don't let a PQP departure coincide with a renewal deadline — the overlap compounds the administrative burden.

PQP Designation and Business Entities

The PQP designation is tied to the specific business entity's CLB application. If a PQP is already designated for another firm and you want them to qualify your company, do not assume that designation transfers; confirm with the CLB which release or new-designation documents are required.

The PQP role is tied to the company's application and technical qualifications, so do not assume it transfers between companies without board documentation.

The South Carolina HVAC License Guide covers the PQP registration process in detail, including the exact documents to file, how to coordinate the PQP application with entity formation and financial documentation, and how to structure the replacement process if your qualifying party departs.

See more South Carolina guides →