How to start an HVAC business in Florida: licenses, insurance, advertising rules and tax

HVAC is a licensed trade almost everywhere, but Florida makes it a state license with a size cap on one class, a credit test, and a license-number rule that reaches your website. This page covers what changes in Florida. The general version of this topic is in our guide on how to start an HVAC business, and for the state's whole contractor system read Florida contractor licenses and the Florida starting guide.

Two license classes, and the difference is system size

Florida's air-conditioning contractors are licensed by the Construction Industry Licensing Board, which sits inside the Department of Business and Professional Regulation (DBPR). Under Fla. Stat. § 489.105, a Class A air-conditioning contractor is unlimited in the contracts it can take. A Class B contractor is "limited to 25 tons of cooling and 500,000 Btu of heating in any one system." Both classes cover central air conditioning, refrigeration, heating and ventilating systems and the related piping and wiring.

The DBPR construction page also lists a Class C servicing license. It was only for people who were certified or registered as of October 1, 1988, and no new Class C licenses are issued. A new company picks A or B. Check the tonnage of the systems you expect to install and service. If your plans include large rooftop units, chillers or multi-system buildings, the cap matters, so choose with your five-year plan in mind.

The statute also draws a line between two kinds of license. A certified contractor holds a certificate of competency from the state and may contract in any jurisdiction without meeting local competency rules. A registered contractor has met the competency rules of one local jurisdiction and may contract only there. If you want to run calls in two counties, you want certified.

What it takes to qualify

Florida licenses by examination. Under § 489.111, the main route is at least four years of active experience, with at least one of those years as a foreman. Other routes combine a bachelor's degree in engineering, architecture or building construction with one year of experience, or combine college credit with experience. The applicant must be 18 and of good moral character.

Two financial tests come next, and they surprise new owners. Board rule 61G4-15.006 asks for a credit score of at least 660. An applicant who cannot meet it can satisfy the requirement with a 14-hour financial responsibility course approved by the board. The same rule requires a credit report with no unsatisfied judgments or liens. Check your own report before you apply.

Insurance is set by rule 61G4-15.003. Air conditioning and mechanical contractors must carry $100,000 in public liability and $25,000 in property damage coverage. The rule makes it a violation to fail to keep that coverage in place continuously, so a lapsed policy is a license problem, not only an insurance problem.

A company is licensed through a person. Under § 489.119, a qualifying agent must be certified or registered for the business to operate. If your only qualifier leaves, section 489.127 treats operating for 60 days or more without naming a new one as a violation. If you plan to bring on a partner who holds the license, put the agreement in writing before you sign anything with the board.

Once licensed, expect continuing education. Under § 489.115, certificate holders complete 14 classroom hours per two-year renewal cycle, including one hour on laws and rules.

Put your license number everywhere you sell

Section 489.119 requires the contractor's number to appear in each offer of services, business proposal, bid, contract or advertisement. That reaches your website, your Google Business Profile description, your paid ads and your emailed quotes. Business stationery and promotional novelties are excluded from the statute's definition of advertisement. Vehicles are covered differently: if a truck carries your business name or artwork that suggests contracting, the number must be shown conspicuously and legibly with it. The statute does not create a duty to letter your trucks, but if you do, the number goes on.

Build the number into your site's header or footer template once and it follows every page. Do the same with the quote email template. If you build the site with us, the website service can carry the number the same way; if you build it yourself, add the number before you publish.

Why working without the license costs more than the job

Florida makes unlicensed contracting a crime and a collection problem. Under § 489.127, contracting, or advertising yourself as available to contract, without the right certification or registration is a first-degree misdemeanor on a first offense and a third-degree felony after a prior finding. Doing it during a state of emergency declared by the Governor's executive order is a third-degree felony. For an HVAC company, that matters because emergencies are exactly when demand spikes and unlicensed crews show up after a hurricane.

The statute also lets a local citation program set civil penalties up to $2,000, and a hearing can impose up to $2,500 per day per violation. Under § 489.128, contracts entered into by an unlicensed contractor are unenforceable by that contractor, which means you may not be able to collect on a job you finished.

Refrigerant certification is federal, and you need it too

The state license does not replace the EPA's Section 608 technician certification. The EPA says anyone who maintains, services, repairs or disposes of equipment that could release refrigerant needs certification. The types are Type I for small appliances, Type II for high-pressure systems, Type III for low-pressure systems, and Universal for all of them. Apprentices are exempt only while closely and continually supervised by a certified technician. See the EPA's certification page for the current rules, and our guide on how to become an HVAC technician for the career path.

Sales tax, workers' comp and local receipts

Florida's rule for contractors on real property, Rule 12A-1.051, says contractors are the ultimate consumers of the materials they use to perform real property contracts. On a lump-sum contract at a single stated price, you pay tax to your supplier and charge no sales tax on the invoice. On a retail sale plus installation contract, the materials must be itemized and priced in the contract before work begins, and you charge tax on those materials but not on installation labor. A repair call quoted by time and materials is where owners get this wrong, so write the contract type onto your quote template. Confirm your own situation with the Department of Revenue.

The Division of Workers' Compensation says construction employers need coverage once they have one employee, and that corporate officers and LLC members count. Non-construction businesses start at four. The Division publishes a list of the trades it treats as construction, so check it for your classification. Counties and cities also issue local business tax receipts, per the Florida starting guide.

Hurricane season changes how you staff

The National Hurricane Center says the Atlantic hurricane season runs from June 1 to November 30. That overlaps most of Florida's cooling season, so your busiest months and your riskiest months are the same months. Plan for outages that kill capacitors and compressors, flooded outdoor units and a flood of first-time callers who have never used you. An AI receptionist that books service calls and captures addresses at 11 p.m. keeps those callers from going to the next number on the list, and our guide on pricing HVAC service jobs helps you set emergency rates before the storm, not during it.

What to do first

1. Decide Class A or Class B, and certified or registered, based on the system sizes and counties you plan to serve.
2. Pull your credit report. If the score is under 660, schedule the 14-hour course now.
3. Form your entity through Sunbiz, then name your qualifying agent.
4. Price general liability at $100,000 and $25,000 or better, and confirm workers' comp status before your first hire.
5. Take the exam, and book your EPA 608 test if you do not already hold it.
6. Add your license number to your website, quote template and truck lettering.

Treat this page as background, since it is not legal or tax advice. Fees, forms and rules change, so check each step with DBPR, the Department of Revenue and your county.

Frequently asked questions