How to Start an HVAC Business in Arizona: ROC CR-39 License and EPA 608

Starting an HVAC business in Arizona means holding a contractor license from the Registrar of Contractors (ROC) before you bid or perform work. Arizona has no general state business license, so the Arizona HVAC contractor license is the core credential, and tax and entity registrations come on top of it. If your technicians handle refrigerant, they also need a federal EPA Section 608 certification. The state does not issue that card, and it does not replace the ROC license.

This guide walks through the order most owners follow, with the confirmed figures and the points you should confirm directly with each agency. It is informational content, not legal or tax advice. Entity choice, tax treatment and licensing decisions depend on your facts, so talk with an Arizona attorney and a CPA before you sign leases, contracts or bonds.

What you need before you start

Collect these items first. Most delays happen when one of them is missing at the filing stage.

• A qualifying party with trade experience. ROC requires 4 years of practical or management trade experience, with at least 2 of those years falling within the last 10 years (ARS 32-1122(E)). The qualifying party is the individual whose experience and exams support the license.
• Written proof of experience. Gather employer letters, job records and dated references. Organize them by employer so you can match each period to the 4-year test and the 2-within-10-year test.
• Funds for exams and the license. You will pay for two exams and the license itself. The amounts are in Steps 3 and 7.
• A surety bond quote. Bonds are written by surety companies, and the required amount depends on your class and volume.
• An EPA Section 608 card for each technician who will handle refrigerant.
• A business name you have checked in the Arizona Corporation Commission business search.
• An Arizona statutory agent with a physical Arizona address, or a plan to hire one.
• A list of cities where you will work, so you can check local permit and license rules.

Step 1: Choose the right ROC classification

ROC licenses HVAC work in specific classifications (A.A.C. R4-9-102 to 104). The one you need depends on the work you plan to bid:

• C-39 specialty commercial: air conditioning and refrigeration on commercial work.
• R-39 specialty residential: air conditioning and refrigeration on residential work, including solar.
• CR-39 specialty dual: air conditioning, refrigeration and heating in one license.
• CR-58: comfort heating, ventilating and evaporative cooling, a separate classification for that category of work.

Commercial and residential are scope-based classes, and the dual class adds heating to the cooling and refrigeration work. Most owners who install furnaces or heat pumps alongside cooling equipment choose CR-39. If you only do cooling and refrigeration, a C-39 or R-39 license may fit your work and cost less, since the fee and bond both differ by class. If comfort heating or evaporative cooling is your main work, confirm with ROC how CR-58 combines with your primary classification before you file. This article does not settle that combination.

Tip: Pick your scope before you pay anything. The license fee, the bond and the exam can all change with the class you choose.

Step 2: Confirm your qualifying party meets the experience test

The qualifying party must show 4 years of practical or management trade experience, and at least 2 of those years must fall within the last 10 years. Management experience counts, but only if it was in the trade. Time spent on a job that ended in 2014 will not count toward the 2-within-10 test on a 2026 application, so the recent years matter most.

Document each period with dates, the employer and a description of the work. If the person you plan to name falls short, choose a different qualifying party before you pay for exams. Switching later costs time and money you have already spent.

Step 3: Pass the ROC exams

The ROC process includes two exams. The statutes and rules exam costs $61. The trade exam costs $66 and covers the trade classification you selected. These figures come from the ROC fee page archived in 2025, so confirm the current exam fees and which trade exam applies to your classification on roc.az.gov before you register.

Study Arizona contractor law and rules for the statutes exam. Study the code and technical material for your trade exam. Schedule only after you have a study plan, because a failed attempt still costs you the fee.

Step 4: Get EPA Section 608 certification

EPA Section 608 is a federal requirement under the Clean Air Act for anyone who maintains, services, repairs or disposes of equipment that could release refrigerant. It is separate from the ROC license. The ROC license does not satisfy the federal requirement, and the EPA card does not satisfy ROC.

Section 608 certification comes in four types. Type I covers small appliances, Type II covers high-pressure systems, Type III covers low-pressure systems, and Universal covers all three. A Universal certification is a common choice for an owner-operator who will service many kinds of equipment. Exam fees are set by the testing organization, not by ROC, so confirm the price with your chosen provider. Official details are at epa.gov/section608.

Step 5: Form your business entity

Many owner-operators form an LLC, but the choice is yours to make with your attorney and CPA. An Arizona LLC files no annual report and pays no LLC franchise tax or annual report fee at the Commission. Income passes through to the members, who pay Arizona's flat 2.5 percent individual income tax. An LLC can also elect corporate treatment, which is taxed at 4.9 percent of net income or $50, whichever is greater (A.R.S. 43-1111).

Here is what the LLC filing involves:

• Form: Articles of Organization (Form L010, instructions L010i), filed through the Arizona Business Center at arizonabusinesscenter.azcc.gov.
• Filing fee: $50 for regular review. Expedited review adds $35, for $85 total. Accelerated service is added on top: $100 for next day (received by 5pm), $200 for same day (received by 10am) and $400 for two-hour service (available 8am to 3pm). Accelerated service guarantees examination within the stated window, not approval.
• Processing time: About 9 to 11 business days for regular processing and 2 to 4 business days for expedited processing, per the Corporations Division sheet posted as of December 29, 2025.
• Name: The name must include 'limited liability company' or 'limited company', or L.L.C., L.C., LLC or LC (A.R.S. 29-3112). It must be distinguishable from names already on the record. Names with banking or trust terms need prior written approval from the Arizona Department of Financial Institutions.
• Statutory agent: An individual agent must be a permanent, full-time Arizona resident with a physical Arizona address. An entity can serve, but an LLC cannot be its own statutory agent. The agent must accept the appointment in writing (Form M002). Keep a valid agent on record at all times, or the LLC risks administrative dissolution (A.R.S. 29-3708). Changing the agent or principal address costs $5 for an LLC.
• Publication: An LLC must publish notice unless its statutory agent's county is Maricopa or Pima. Confirm the exact publication steps with the Commission before you assume the requirement does not apply.

If you choose a corporation instead, the Articles of Incorporation for a for-profit corporation cost $60 and are filed with a Certificate of Disclosure. A for-profit corporation must file an annual report each year in its anniversary month, at a fee of $45.

Step 6: Reserve your name and register a trade name if needed

To hold a name while you prepare filings, the Commission offers name reservation for $10 for 120 days through the Arizona Business Center. Reserve the name once you know it is available, and before you print trucks or sign a lease.

If you will operate under a name different from your entity name, register a trade name with the Arizona Secretary of State, Business Services Division, at azsos.gov/business/tntm. Trade name registration is optional and separate from the Corporation Commission filing. The fee is not confirmed, so confirm it on that page. Also ask ROC whether your license will show the entity name, the trade name or both.

Step 7: Post your bond and pay the ROC fees

Under ARS 32-1152, the surety bond amount depends on your class and volume. A specialty commercial bond ranges from $2,500 to $50,000. A specialty residential bond ranges from $1,000 to $7,500. For residential or dual classifications, you also need either the Residential Contractors' Recovery Fund or an extra $200,000 bond. Get a quote from a surety company early, because the premium is set by the surety and can affect your start-up budget.

The ROC fee schedule below comes from the archived 2025 page, which lists fees effective July 1, 2014. Confirm the current amounts on roc.az.gov before you pay.

Classification	New license	Renewal (2-year license)
Specialty commercial (C-39)	$580	$480
Specialty residential (R-39)	$720	$540
Specialty dual (CR-39)	$850	$650

The table does not list a fee for CR-58. Confirm that fee with ROC before you budget for it.

Step 8: Register for the Transaction Privilege Tax

Arizona has no general state business license. The license most businesses need is the Transaction Privilege Tax (TPT) license from the Arizona Department of Revenue, which costs $12 per location. TPT applies to retail sales and other taxable business classifications. Contracting work has its own tax treatment, so confirm with the Department which classifications your HVAC work falls under before you price jobs. You can start the registration at azdor.gov.

Step 9: Check city and county rules

Counties issue no general business license. Cities and towns commonly require their own business license or TPT license on top of the state registration, and many also require permits for installation work. Do not assume a city has no license requirement because the state does not issue a general one.

Check every city where you plan to work. Local fees are not confirmed, and for Gilbert, Chandler and Flagstaff the fees need confirmation with each city directly. City permits usually apply to the job itself, so include them in your bid pricing.

Common mistakes to avoid

• Choosing a dual license by default. CR-39 costs more than C-39 or R-39, so match the classification to the work you will actually bid.
• Counting old experience. Only recent years help with the 2-within-10 test, so a job that ended in 2014 will not carry the application.
• Treating EPA 608 as part of the ROC license. It is a separate federal requirement, and each technician who handles refrigerant needs it.
• Budgeting with old fee numbers. The ROC fee page we reviewed is archived from 2025 and lists fees effective July 1, 2014. Confirm before you budget.
• Letting the statutory agent lapse. If the agent is not maintained, the LLC risks administrative dissolution under A.R.S. 29-3708.
• Skipping the publication requirement. An LLC must publish notice unless its statutory agent's county is Maricopa or Pima.
• Assuming the state TPT license covers city tax. Cities can charge their own business license and tax requirements.
• Signing a bond without comparing quotes. Premiums vary by surety, so get more than one quote before you commit.

Tips for a smoother filing

• Start the entity filing early. Regular processing takes about 9 to 11 business days, and expedited service is worth paying for only when a bid or hiring date depends on it.
• Keep one folder with the experience letters, exam receipts, bond paperwork, entity filing and ROC application. A clean record makes the qualifying party's experience easy to show if ROC asks.
• Check roc.az.gov, azcc.gov and azdor.gov on the day you file. Agency fees and processing times change.
• If you want free help with the business side, the Arizona Small Business Development Center Network offers advising for new owners.

Expected results

Owners who document their experience, choose the classification before they pay, and file the entity early tend to move through the sequence with fewer delays. Timing still depends on exam availability, ROC review, bonding and city permits, so treat any launch date you set as an estimate. Once the license, bond and tax registration are in place, the remaining work is mostly the job-by-job permit process and keeping your statutory agent, renewals and records current.

Where to verify each step

• Registrar of Contractors: roc.az.gov
• Arizona Corporation Commission, Corporations Division: azcc.gov/corporations
• Arizona Business Center: business search
• Secretary of State, trade names: azsos.gov/business/tntm
• Department of Revenue: azdor.gov
• EPA Section 608: epa.gov/section608

This article is informational content, not legal or tax advice. Licensing, entity formation and tax treatment depend on your situation. Consult a qualified Arizona attorney and CPA before you make decisions that carry legal or financial consequences.