HVAC Contractor Qualifying Agent: License, Exam and EPA 608 by State

An HVAC contractor's qualifying agent is the licensed person whose experience and exam results the state board accepts on behalf of the company, and who then supervises the company's heating, air conditioning and refrigeration work. States call that person different things (qualifying agent, qualifying individual, responsible managing employee, qualifying party), and the company license, the trade exam and the federal refrigerant certification are three separate credentials. For the rules in every state, start with how to get a contractor license in each state.

At a glance A qualifier with the experience and passing exam scores applies as the qualifying agent of the business, and that qualifies the company to contract (Florida s. 489.119). California tests each qualifier twice, with a law and business exam plus a trade exam (CSLB); Tennessee requires both exams for the company, but not from the same person (TBLC). EPA Section 608 certifies a technician to work on refrigerant circuits; it is not a contractor license (40 CFR 82.161). Section 608 credentials do not expire (EPA). If the qualifier leaves, Florida gives the company 60 days to name a new one (s. 489.119).

What an HVAC Qualifying Agent Does

The qualifying agent is the reason a board will license a company that the owner could not qualify alone. Florida defines the primary qualifying agent as the person with the skill, knowledge and experience, and the responsibility, to supervise, direct, manage and control the contracting activities of the business (s. 489.105). That is the job in every state that uses the model: the license rests on a real person who runs the work.

In practice the qualifier sits the exams, signs the application for the company, and stays connected to the business while it contracts. Nevada spells the duties out: the person qualifying for a firm must make technical and administrative decisions, direct and discipline employees, and devote himself or herself solely to that business (NRS 624.260).

An owner who holds the license can qualify the company personally. Tennessee lets the qualifying agent be an owner, an officer or a full time employee (TBLC), and California lets a sole owner qualify through personal experience or through a responsible managing employee (B&P 7068). A separate qualifier matters when the owner is a business person, an investor, or a contractor entering a new state.

For the full definition and how the role works across trades, read what a qualifying agent is. For HVAC in particular, the company pages at HVAC contractor licensing cover the service side.

The Names States Use for the Qualifier

The role is the same; the title changes at the state line. Using the right term matters when you read a board application, because the form will ask for that person by the state's own name.

• Florida: primary qualifying agent, plus a secondary qualifying agent who supervises a job he or she pulled the permit for (s. 489.105).
• California: qualifying individual, serving as a responsible managing officer (RMO), responsible managing employee (RME), or for an LLC a responsible managing manager or member (B&P 7068).
• Nevada: responsible managing employee or responsible managing officer (NRS 624.260).
• Arizona: qualifying party (A.R.S. 32-1122).
• Georgia: the qualifying licensee a company associates through a business registration (Georgia Board of Conditioned Air Contractors).
• Texas: the license holder, who must be an employee or owner of the contracting company (16 TAC 75.70).
• Tennessee: qualifying agent, the person designated to take the exams for the entity (TBLC).
• Iowa: master of record, a master licensee actively in charge of a contractor's HVAC-refrigeration, mechanical or sheet metal work (Iowa Admin. Code 481-431).

Whatever the label, the board wants a named, licensed person who answers for the work.

HVAC Qualifier Rules in Eight Large States

The table below shows who issues the HVAC contractor license, the class name the board uses, and the board's term for the qualifier. Each row was checked at the board or in the statute on 2026-09-29.

State notes

• Florida: Class A is unlimited; Class B is limited to 25 tons of cooling and 500,000 Btu of heating in any one system; Class C is limited to servicing and has been closed to new applicants since October 1, 1988. A certified contractor may work anywhere in the state, while a registered contractor may contract only where registered (s. 489.105). See the HVAC license in Florida and the Florida qualifying agent guide.
• Texas: Class A covers any size unit; Class B covers cooling systems of 25 tons and under and heating systems of 1.5 million BTUs per hour and under. Endorsements are Environmental Air Conditioning, Commercial Refrigeration, and Process Cooling or Heating (TDLR). See the HVAC license in Texas.
• California: the C-20 contractor fabricates, installs, maintains, services and repairs warm air heating, ventilating and air conditioning systems, including water heating heat pumps (CSLB C-20). See the HVAC license in California.
• Georgia: Class 1 is restricted to systems not exceeding 175,000 BTU of heating and 60,000 BTU of cooling; Class 2 is unrestricted. A no fee business registration associates the qualifying licensee with the company (Georgia board). See the HVAC license in Georgia.
• North Carolina: Heating Group 1 is steam and hot water heating; Group 2 is forced air above 15 tons; Group 3 is 15 tons or less and every single family residence regardless of size (G.S. 87-21). The board is the State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors. A corporation is licensed through a licensed officer or full time employee who signs contracts and supervises the work (G.S. 87-26). See the HVAC license in North Carolina.
• Arizona: C-39 is the commercial air conditioning and refrigeration class, R-39 the residential class (it includes solar), and CR-39 the dual class covering C-39 plus the residential R-39R air conditioning and refrigeration scope (R4-9-102, R4-9-103, R4-9-104). See the HVAC license in Arizona.
• Nevada: C-21 subclassifications include C-21a refrigeration, C-21b air conditioning, C-21c sheet metal and C-21d maintenance (NAC 624.380). See the HVAC license in Nevada.
• Tennessee: a license is required for projects of $25,000 or more, and an HVAC subcontractor needs one when its portion is $25,000 or more. CMC (full mechanical) must be pre-approved (TBLC). See the Tennessee HVAC license and the Tennessee qualifying agent guide.

Which License Class the Company Needs

HVAC classifications vary by state, but four families show up again and again. Pick the class that matches the jobs the company will bid, because a board will hold the company to the scope printed on the license.

• HVAC or HVAC/R contractor: heating, ventilation, air conditioning and refrigeration, such as Florida's air conditioning classes, California's C-20 and Tennessee's CMC-C.
• Mechanical contractor: a broader class covering HVAC plus related piping and systems. Florida's mechanical contractor is unlimited in central air conditioning, refrigeration, heating and ventilating (s. 489.105), and Tennessee's CMC combines plumbing and HVAC.
• Sheet metal contractor: ductwork fabrication and installation. Florida licenses it as its own class, and Nevada lists it as C-21c.
• Refrigeration contractor: commercial refrigeration systems. Texas offers a Commercial Refrigeration endorsement, and Nevada lists refrigeration as C-21a.

Size limits are a common trap. A Texas Class B, a Florida Class B or a Georgia Class 1 license looks like a full HVAC license until the company bids a large commercial system. If the growth plan includes commercial work, qualify the company in the unlimited class from the start.

The HVAC Contractor Exam

In states such as California and Tennessee the HVAC contractor exam is two tests: a business and law exam on contracting law, lien law, safety and records, and a trade exam on HVAC design, installation and code. California requires each qualifying individual to pass the Law and Business Examination and the Trade Examination for the classification (CSLB). Tennessee requires the Business and Law exam plus a trade exam for classifications that carry one, but the same person does not have to take both, and up to two people may test for the company (TBLC).

Experience comes before the exam. Florida's standard route is 4 years of active experience with at least 1 year as a foreman (s. 489.111). California asks for 4 years of journey level experience within the last 10 years (CSLB), and Arizona's qualifying party needs 4 years of practical or management trade experience, at least 2 of them within the last 10 years (A.R.S. 32-1122).

Texas takes a different path: 48 months of supervised experience within the past 72 months, or a technician certification held for 12 months plus 36 months of experience within 48 months, and the applicant must be at least 18 (TDLR). PSI administers the Texas contractor exams by class and endorsement (TDLR exam page). Tennessee moved its exams to Prov beginning July 1, 2026 (TBLC).

Exam vendors differ from state to state, so the candidate bulletin from the state's own vendor is the guide to question counts, time limits and passing scores. Georgia also requires Board approval before a candidate sits for the conditioned air exam (Georgia board).

Where EPA Section 608 Fits

EPA Section 608 certification is a federal technician credential under the Clean Air Act, set out in 40 CFR Part 82, Subpart F. It lets a person open refrigerant circuits; it does not let a company contract for HVAC work. A state board licenses the company, and the EPA program certifies the technician (40 CFR 82.161).

The rule covers any person who could reasonably be expected to violate the integrity of the refrigerant circuit while maintaining, servicing, repairing or disposing of appliances that contain a class I or class II refrigerant or a non-exempt substitute (40 CFR 82.161). The four certification types are below.

Notes

• Exceptions: an apprentice closely and continually supervised by a certified technician is exempt, and people who dispose of small appliances, motor vehicle AC and MVAC-like appliances do not need certification (40 CFR 82.161).
• No expiration: Section 608 technician certification credentials do not expire (EPA).
• Universal testing: the Core section must be taken as a proctored exam to earn Universal certification (EPA).
• Section 609: anyone who repairs or services a motor vehicle air conditioning system for payment or barter needs Section 609 certification instead (EPA Section 609).
• OSHA: the job site also falls under the federal construction safety standards in 29 CFR 1926 (OSHA).

State boards tie the two together in their paperwork. Georgia lists EPA certification among the documents for a conditioned air license application (Georgia board). For the full comparison, read how EPA 608 certification differs from an HVAC license.

Growing Into More States

HVAC contractors expanding across states run into the same four differences each time.

• Scope definitions: one state's HVAC class is another state's mechanical class, and size limits differ, as the Florida, Texas and Georgia notes above show.
• Exam providers: Texas uses PSI and Tennessee moved to Prov, so each state means a new bulletin and a new booking.
• Continuing education: renewal rules are set state by state; Georgia, for example, asks for proof of continuing education on reinstatement (Georgia board).
• Insurance and bonding: thresholds differ by class. Texas requires general liability of $300,000 per occurrence and $600,000 aggregate for Class A, and $100,000 and $200,000 for Class B (TDLR).

Each new state also needs its own qualifier. Texas limits a license holder to one business affiliation and one permanent office at a time (16 TAC 75.70), and Nevada lets a person qualify more than one active license only in limited cases, such as owning at least 25 percent of each licensee (NRS 624.260).

The Licensing Steps in Order

1. List the work. Write down system sizes, residential or commercial, and any refrigeration or piping, then match it to the state's class and size limits.
2. Name the qualifier. Decide whether the owner qualifies personally or the company brings in a licensed qualifier who will be an officer, owner or full time employee.
3. Document experience. Gather the proof the board wants for the qualifier, such as Florida's 4 years with 1 as a foreman or Texas's 48 months in the past 72.
4. Get board approval where required. Georgia requires Board approval to sit for the exam, and Tennessee's CMC class must be pre-approved.
5. Pass the required exams. Book each exam the state requires, such as a business and law exam, a trade exam, or both, with the state's vendor.
6. Confirm EPA 608 for the technicians. Match each technician's type to the equipment the company services.
7. File the company application. Submit the entity details, the qualifier's affidavit or designation, insurance and fees.
8. Register the business link. Complete any separate step that ties the qualifier to the company, such as Georgia's business registration.
9. Keep the qualifier in place. Track renewals and continuing education, and plan for a replacement before anyone leaves.

When the Qualifier Leaves

Boards give a short window to replace a departing qualifier. In Florida, when the departing qualifying agent was the company's only licensed contractor, the company has 60 days from the end of that affiliation to employ another and may not contract until it does. The executive director or board chair may grant a temporary nonrenewable certificate that lets it finish only contracts already awarded, or bid low and later awarded (s. 489.119).

Nevada is tighter. The licensee must notify the Board in writing within 10 days, the license stays in force no more than 30 days after the departure, and a missed notice means automatic suspension (NRS 624.285).

Iowa lets a contractor keep working up to six months without a new master of record if it notifies the board within 30 days (Iowa Admin. Code 481-431). Georgia's business registration checklist includes a severance of qualifying licensee document for the same change (Georgia board).

Why Companies Use a Qualifying Agent

A qualifying agent qualifies the company: the qualifier's experience and exam results meet the board's standard, and the qualifier then supervises the company's HVAC work as a real member of the team.

The Licensing Company places qualifying agents who hold HVAC and mechanical licenses nationwide, each as a full time W-2 employee who actually supervises the work. That is our placement model, and each state's own rules still govern the approval. Founders Marshall Schofield and Jeremiah Jaskulski, recognized authorities in contractor licensing, built the firm around that standard. Read what a qualifying agent is, then hire a qualifying agent for residential AC installation or large commercial mechanical work.

Frequently Asked Questions

What is an HVAC licensed contractor?

It is a company or person that a state board or local authority has licensed to contract for heating, ventilation, air conditioning and refrigeration work. Depending on the state, the license is issued to the business or to the qualifier who holds it for the business, and in the states on this page it rests on a qualifier who passed the exams. Technicians working for that company may hold separate credentials such as EPA 608.

What is on the HVAC contractor exam?

California requires each qualifier to pass a law and business exam plus a trade exam (CSLB). Tennessee requires both exams for the company, but they may be taken by different people (TBLC). Question counts and passing scores are in each vendor's candidate bulletin.

Is EPA 608 certification an HVAC license?

No. Section 608 certifies a technician to work on appliances containing refrigerant, and the credential does not expire (EPA). A state board still has to license the company before it contracts for HVAC work.

Can the owner be the qualifying agent?

Yes, when the owner holds the experience and passes the exams. Tennessee allows an owner, officer or full time employee to serve (TBLC). A separate qualifier is the route when the owner does not hold the license.

Can one qualifier cover two HVAC companies?

Texas says no: a license holder uses the license for one business affiliation and one permanent office at a time (16 TAC 75.70). Nevada bars a person from qualifying more than one active license unless an ownership exception applies, such as owning at least 25 percent of each licensee (NRS 624.260). Check each board before assuming anything else.

What happens if the qualifier quits?

The company must replace the qualifier inside the board's window. Florida allows 60 days (s. 489.119), and Nevada requires written notice within 10 days with the license lasting no more than 30 days after the departure (NRS 624.285).

Is a mechanical license the same as an HVAC license?

Not always. Florida's mechanical contractor is unlimited in heating, cooling, refrigeration and ventilating, and Tennessee's CMC adds plumbing to HVAC. A narrower HVAC class, such as Tennessee's CMC-C, covers HVAC only.

Talk With Our Team About Your HVAC License

If your company needs an HVAC or mechanical license in a new state, or needs to replace a qualifier on a deadline, call The Licensing Company at 615-219-2110. Our team will map the class, the exams and the qualifier your jobs require, and you can start at hire a qualifying agent.

Sources

• Florida Statutes s. 489.105, Definitions, retrieved 2026-09-29
• Florida Statutes s. 489.111, Licensure by examination, retrieved 2026-09-29
• Florida Statutes s. 489.119, Business organizations; qualifying agents, retrieved 2026-09-29
• TDLR, Apply for an Air Conditioning and Refrigeration Contractor License, retrieved 2026-09-29
• TDLR, Air Conditioning and Refrigeration Contractors Exam Information, retrieved 2026-09-29
• 16 Tex. Admin. Code 75.70, Responsibilities of the Contractor/Licensee (Cornell LII), retrieved 2026-09-29
• California Business and Professions Code 7068, retrieved 2026-09-29
• CSLB, C-20 Warm-Air Heating, Ventilating and Air-Conditioning, retrieved 2026-09-29
• CSLB, Requirements for Adding a Classification, retrieved 2026-09-29
• Georgia Board of Conditioned Air Contractors, How to Guide, retrieved 2026-09-29
• North Carolina G.S. 87-21, retrieved 2026-09-29
• North Carolina G.S. 87-26, retrieved 2026-09-29
• North Carolina State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors, retrieved 2026-09-29
• Arizona Revised Statutes 32-1122, retrieved 2026-09-29
• Ariz. Admin. Code R4-9-102 (Cornell LII), retrieved 2026-09-29
• Ariz. Admin. Code R4-9-103 (Cornell LII), retrieved 2026-09-29
• Ariz. Admin. Code R4-9-104 (Cornell LII), retrieved 2026-09-29
• Nevada Revised Statutes Chapter 624, retrieved 2026-09-29
• Nevada Administrative Code Chapter 624, retrieved 2026-09-29
• Tennessee Board for Licensing Contractors, Contractor License, retrieved 2026-09-29
• 40 CFR 82.161, Technician certification, retrieved 2026-09-29
• EPA, Section 608 Technician Certification Requirements, retrieved 2026-09-29
• EPA, Section 609 Technician Training and Certification Programs, retrieved 2026-09-29
• OSHA, Construction Industry, retrieved 2026-09-29
• Iowa Admin. Code 481, Chapter 431, Plumbing and Mechanical Systems Board licensee practice, retrieved 2026-09-29