How to Start an HVAC Business in Florida: Class A, B and C Licenses

If you are searching for a florida hvac license, the first question is usually which class fits the work you want to do and what it takes to qualify. Florida licenses air-conditioning contractors through the Construction Industry Licensing Board (CILB), which operates under the Department of Business and Professional Regulation (DBPR). This guide covers the Class A, Class B and Class C air-conditioning licenses, the mechanical contractor option, and the business setup steps that follow the license.

Disclaimer: This article is informational content, not legal or tax advice. License rules, fees and experience requirements can change. Confirm every figure with the agency named before you file or spend money. For complex situations, talk with a qualified attorney or CPA.

Florida HVAC License Classes at a Glance

Florida's air-conditioning licenses fall into three classes. The class you hold determines the size of systems you can work on and whether you can take on new installation work.

License	What it covers	Status for new applicants
Class A air-conditioning contractor	Unlimited air-conditioning work	Open to new applicants
Class B air-conditioning contractor	Limited to 25 tons of cooling and 500,000 Btu of heating per system	Open to new applicants
Class C air-conditioning contractor	Servicing only	Legacy license. No new registrations since 10/1/1988
Mechanical contractor	Broader mechanical scope than the air-conditioning classes	Separate license path. Confirm scope and requirements with CILB

Class A is the full air-conditioning license. Class B is the practical choice for many residential and smaller commercial businesses, but its limits apply to each system: 25 tons of cooling and 500,000 Btu of heating. A job with several units can still fall within Class B if each system is under both limits. Confirm how the limit applies to your specific project with CILB before you bid.

Class C allows servicing work only, and the board has not issued new Class C registrations since 10/1/1988. If you already hold a Class C license, confirm its status and renewal rules with DBPR. If you want to work on new installations, plan around Class A or Class B instead.

The mechanical contractor license is a different path. It can make sense if your work goes beyond air conditioning into other mechanical systems. Its scope and requirements are not the same as the air-conditioning classes, so confirm them with CILB.

Materials and Documents You Need Before You Apply

Gather these items before you start. Missing paperwork is the most common reason applications stall.

• Identification and personal information for each applicant, as the application requires.
• Work experience records in air-conditioning installation, service or related work. Keep pay stubs, W-2s, employer letters, job logs and permit records with dates and job descriptions. Confirm the required amount of experience with CILB.
• Qualifier records if the business will hold the license through a qualifying person.
• EPA Section 608 certification card. This is a federal credential, separate from the state license.
• Exam registration and fee receipts for the required CILB exams.
• Entity paperwork: Articles of Organization for an LLC, or Articles of Incorporation for a corporation, plus your registered agent's information.
• A fictitious name registration if you will operate under a name other than your legal entity name.
• A written budget for filing, exam, insurance and tax registration costs. Pull current fee amounts from each agency rather than relying on older articles, including this one.

Step-by-Step: How to Get an HVAC License in Florida

Step 1: Choose the license that matches your work

Start with the work you plan to sell in year one. If you expect to do large commercial or unlimited air-conditioning work, aim for Class A. If your first jobs will be residential or light commercial under the Class B limits, Class B may be the right starting point, with a planned upgrade later. Avoid applying for Class C, since new registrations are closed. Mechanical contractor status is worth a separate look if your work extends beyond air conditioning.

Step 2: Document your experience from day one

Experience records are the foundation of your application. Ask employers for letters that list your dates, duties and the types of systems you worked on. Keep copies of permits you pulled or signed off on. Records that are vague or missing dates are difficult to use later, so organize them as you go.

Step 3: Earn your EPA 608 certification

EPA Section 608 certification is a federal requirement for anyone who buys, handles or disposes of refrigerant. Most air-conditioning work involves refrigerant, so get certified before your first service call. The EPA publishes program information at https://www.epa.gov/section608. The state license does not replace this federal credential, and the certification does not make you licensed in Florida.

Step 4: Register for and pass the required exams

CILB sets the exam requirements for each license class by rule. Confirm which exams apply to the class you are pursuing, how to register, and the current exam fee directly with CILB through the DBPR licensing portal at https://www.myfloridalicense.com. Study the code and technical content that matches your class, and schedule the exams only after your experience documentation is in order.

Step 5: Form your business entity

Most HVAC owners form an LLC or corporation before applying for the license so the license matches the legal name. Use the Florida Department of State, Division of Corporations (Sunbiz) at https://dos.fl.gov/sunbiz/. These are the key Sunbiz figures:

• LLC: $125 filing fee for Articles of Organization. Name must end with Limited Liability Company, LLC or L.L.C. Annual report is $138.75, filed each year between January 1 and May 1. A $400 late fee applies after May 1, bringing the total to $538.75. Failure to file by the third Friday in September leads to administrative dissolution.
• Corporation: $70 filing fee for Articles of Incorporation for a Florida profit corporation. Profit Annual Report is $150, with a $400 late fee after May 1 (total $550).
• Name reservation: $25 for an LLC ($35 for a corporation) and valid for 120 days, if you need time to secure a name.

Do not assume a name is available until you receive a filing acknowledgment. Sunbiz does not offer expedited filing. Online filings are processed in the order received, and no turnaround time is guaranteed. The Division's walk-in office is at 2415 N. Monroe Street, Suite 810, Tallahassee, open Monday to Friday, 8am to 5pm, where most requests are completed while you wait.

Step 6: Appoint a registered agent

Every Florida LLC and corporation must designate a registered agent with a physical Florida street address. A P.O. box does not qualify. The agent must sign to accept the appointment. An entity cannot be its own registered agent, but an individual owner or officer can serve. The designation carries a required fee of $25 for an LLC and $35 for a corporation, already included in the $125 and $70 filing totals above, and changing the agent later costs the same amount.

Step 7: Submit the license application through DBPR

Once your exams and experience documentation are in order, apply through the DBPR licensing portal at https://www.myfloridalicense.com. List the qualifying person and entity accurately. Confirm the application and license fees on that portal or with CILB at the time you file.

Step 8: Register a fictitious name if you need one

If your trade name differs from your legal name, register it with the Division of Corporations. The fictitious name registration costs $50 to register and $50 to renew. It is valid for 5 years and expires on December 31 of the fifth year. Renewal is filed between July 1 and December 31 of the expiration year. The name must be advertised at least once in a newspaper in the county of your principal place of business, though no proof of advertisement is filed. Registration is filed statewide with the Division, not with the county. Details are at https://dos.fl.gov/sunbiz/start-business/efile/fl-fictitious-name-registration/.

Step 9: Check local business tax and sales tax obligations

Florida issues no general statewide business license, and the local business tax receipt under Chapter 205 is a tax, not a competency license. It does not prove you are qualified to do HVAC work. Not every county or city levies one, so check with the city or county where you will operate.

Separately, businesses selling taxable goods or services must register as a sales and use tax dealer with the Florida Department of Revenue before beginning business. The state sales tax rate is 6%. Whether your particular HVAC charges are taxable depends on the transaction, so confirm the treatment with the Department or a CPA. Register at https://floridarevenue.com/taxes/eservices/Pages/registration.aspx.

Step 10: Arrange insurance and employer requirements

Talk with an insurance agent before you take your first job. Ask about general liability and any coverage that your contracts, permits or employees will require. If you plan to hire, confirm your employer registration and workers' compensation obligations with the appropriate state agencies. Get current figures from the agencies and your insurer.

How to Become an HVAC Technician in Florida

Many people searching how to become a hvac technician in florida want to work in the field rather than own a company. You can start as a technician or helper under a licensed contractor while building documented experience. Those records can count toward a future license. The licensed company is generally the party responsible for contracts and permits, so confirm with CILB what a technician can do without a license of their own and what supervision applies. Get your EPA 608 certification early, since it is required for refrigerant work regardless of your role.

Upgrading Between Classes

Florida Statute 489.111 sets the upgrade timelines below. Plan your growth around them and confirm the exact requirements with CILB before you apply.

Upgrade	Timeline under s. 489.111
Class B to Class A	1 year
Class C to Class B	3 years
Class C to Class A	4 years

If you hold a Class C license today, the upgrade path to Class B or Class A is the main reason to keep your experience records current and detailed.

Common Mistakes to Avoid

• Planning around a new Class C registration. None have been issued since 10/1/1988.
• Assuming Class B covers every job. Check the tonnage and Btu limits on each system before you bid.
• Keeping thin experience records. Missing dates and vague job descriptions slow the application.
• Treating the Sunbiz filing as a license. Forming an LLC does not make you licensed to do HVAC work.
• Using a name you have not confirmed. Wait for the filing acknowledgment before you print signs or order uniforms.
• Missing the May 1 annual report deadline. A late fee applies, and the LLC risks administrative dissolution if the report is not filed by the third Friday in September.
• Skipping the registered agent requirement. A P.O. box does not satisfy the Florida street address rule.
• Confusing the local business tax receipt with a license. It is a tax, and not every county or city levies one.
• Starting refrigerant work without EPA 608. The federal requirement applies even if your state paperwork is still pending.

Tips for a Cleaner Application

• Build your experience file monthly, not at the end of the process.
• Use the same legal name across your Sunbiz filing, the license application, your insurance policy and your tax registrations.
• Keep a dated calendar with the Sunbiz annual report window, the registered agent appointment and any fictitious name renewal.
• Call CILB or DBPR with specific questions before you pay for exams or filings. A short call can prevent a rejected application.

What to Expect After You Are Licensed

A Florida license may help you bid on regulated work and show customers that your business has met state requirements. It is not a guarantee of contracts, revenue or profitability. Outcomes depend on your local market, pricing, reputation, insurance coverage and how well you manage your jobs. Treat the license as one part of a broader business plan.

When to Get Professional Help

A CPA can advise on entity choice, sales tax treatment and bookkeeping. An attorney can review contracts, warranty language and liability exposure. For free or low-cost business guidance, the Florida SBDC Network at https://floridasbdc.org/ offers counseling for new owners. For license questions, confirm the answer in writing with CILB or DBPR.

This article is informational content, not legal or tax advice. Verify all fees, deadlines and license requirements with the agencies named above before you act.