HVAC License Requirements by State

By Muhammet Çay

Match the business offer to the license

A company advertising repair, replacement, and commercial maintenance needs more than a generic statement that it is licensed. The exact systems, building types, and related tasks determine the classification. The records below cover the states for which this guide has published detail. Their application fees are not interchangeable, and neither are their rules about who holds the credential.

Texas: an individual contractor anchors the operation

The Texas HVAC license record identifies the Texas Department of Licensing and Regulation as the statewide authority for Air Conditioning and Refrigeration contractors. The credential belongs to an individual who is responsible for the business’s work. Applicants choose Class A or Class B and an endorsement that matches environmental air conditioning, commercial refrigeration, or process cooling or heating. Class B has equipment-capacity limits; Class A does not have that class limit. The state record specifies practical experience, an examination, and class-specific liability insurance. Cities still control mechanical permits and inspections.

Florida: statewide certification or local registration

The Florida page covers the Department of Business and Professional Regulation’s Construction Industry Licensing Board. Certified air-conditioning and mechanical contractor categories allow statewide work within their scopes. Registered contractors rely on local competency and work only in the jurisdiction of registration. The existing Class C service category is closed to new applicants, so it is not a shortcut for a new repair business. Florida’s certified route involves field and supervisory experience, exams, insurance, and continuing education. Counties and municipalities may license journeymen, and local business and permit requirements remain.

California: C-20 and the qualifying individual

For warm-air heating, ventilation, air-conditioning, related ducts, and controls, the California record identifies the Contractors State License Board C-20 classification. A sole owner or entity holds the contractor license; a qualifying individual supplies the examination and experience credentials. The source record also identifies a narrow casual or minor-work exemption when the work is below the statutory amount and no building permit is required. That exception is not a general license for an HVAC business. C-20 applicants should review the contractor bond, workers’ compensation rule, and extra requirements for an LLC. Cities and counties handle business licenses and job permits.

Arizona: choose commercial, residential, or dual scope

The Arizona guide follows the Registrar of Contractors’ C-39, R-39, and CR-39 classifications. The contractor business holds the license through a qualifying party; the party is not issued a separate state journeyman or master credential by the registrar. The relevant bond changes with classification and projected volume. Application, license, examinations, background checks, and the residential Recovery Fund assessment may each affect opening cash. Local offices can add registration or permit steps.

North Carolina: system and building scope matter

The North Carolina record is organized around Heating Group classifications. The Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors oversees the heating credentials. Group 3 covers a defined forced-air capacity, with a class split between any building and detached single-family work; Group 2 addresses larger forced-air equipment; Group 1 concerns water-based comfort heating. Fuel piping is a separate credential. Electrical work incident to HVAC may require a license from the separate electrical board. The official guidance does not cover the separate commercial refrigeration board.

Federal refrigerant certification is a separate question

EPA Section 608 technician certification applies to people who maintain, service, repair, or dispose of covered equipment in ways that may release regulated refrigerants. A state contractor license does not confer that certification. The EPA technician certification guidance explains the work and credential. Define who will perform refrigerant work before assigning calls or promising a repair. Keep proof of the appropriate credential with personnel records.

What to verify before the first contract

Ask the state authority whether the proposed systems and activities fit the classification and whether the named owner or qualifier meets the experience and exam rules. Confirm the current application, issue, and renewal fees, along with bond or insurance documents. Then contact the city or county for business registration, mechanical permits, inspections, and any local individual credential. A permit for a particular installation does not replace the contractor license, and the contractor license does not remove the permit step.

Build the licensing calendar into the launch budget. An application can be delayed by experience documentation, examination scheduling, background checks, bond issuance, or proof of coverage. Enter only the applicable path in the startup cost calculator. The five states described above are the coverage of this guide; other states are not yet covered.

Official sources

• www.tdlr.texas.gov — ACR Contractor license application
• www.tdlr.texas.gov — Annual ACR Contractor license renewal
• leginfo.legislature.ca.gov — Application for original contractor license, one classification (exam or waiver); paid to CSLB
• web.cslb.ca.gov — Active timely renewal, sole owner (includes C-10 $20 statutory surcharge)
• www.cslb.ca.gov — DOJ fingerprint processing fee (Live Scan), per applicant/officer/partner/owner/RME
• roc.az.gov — New license application fee, Specialty Commercial (C)
• nclicensing.org — Examination application fee (non-refundable)
• nclicensing.org — Initial license activation after passing exam (due within 45 days)
• nclicensing.org — Annual renewal, Plumbing/Heating/Fuel Piping contractor license
• sos.ga.gov — Conditioned Air company business registration
• www.tn.gov — Initial contractor license
• www.tn.gov — Contractor license renewal
• tn.gov — Tennessee Board for Licensing Contractors, exam information (Prov)
• llr.sc.gov — Initial general or mechanical contractor entity license
• llr.sc.gov — RBE application
• codes.ohio.gov — OCILB electrical examination application
• law.lis.virginia.gov — Class C initial contractor license
• law.lis.virginia.gov — Class C contractor license renewal
• law.lis.virginia.gov — Original master tradesman license by examination
• www.dpor.virginia.gov — PSI Master Tradesman examination, paid directly to PSI
• law.lis.virginia.gov — Tradesman license renewal
• www.michigan.gov — Initial Mechanical Contractor license/classification, including HVAC Equipment
• www.michigan.gov — Electrical contractor license, every three years
• app.leg.wa.gov — Initial specialty contractor registration
• app.leg.wa.gov — Initial general or specialty electrical contractor license, in person/by mail/fax
• www.mass.gov — Refrigeration Contractor application; only for covered refrigeration work on systems of ten tons or greater
• www.mass.gov — Refrigeration Technician application; only for covered refrigeration work on systems of ten tons or greater
• www.dli.mn.gov — Initial DLI mechanical contractor bond filing; bond amount itself is $25,000
• api.bls.gov — BLS OEWS Heating, Air Conditioning, and Refrigeration Mechanics and Installers

Market sources

• test-takers.psiexams.com — PSI exam, Environmental Air or Commercial Refrigeration Class A
• www.flrules.org — Examination development fee paid to DBPR or its exam vendor upon scheduling tests (part of the $335 application+exam fee)
• test-takers.psiexams.com — PSI electrical trade exam, per registration
• test-takers.psiexams.com — PSI HVAC Equipment classification exam, each attempt
• trutechtools.com — Fieldpiece SM482V 4-port digital manifold (replaces SM480V)
• www.supplyhouse.com — Fieldpiece SRS1 refrigerant scale
• trutechtools.com — Fieldpiece VP67 6 CFM vacuum pump
• www.fluke.com — Fluke 117 electrician's multimeter
• www.homedepot.com — 3M SecureFit SF400G-LV-4-PS safety glasses
• trutechtools.com — Fieldpiece VP87 8 CFM vacuum pump
• trutechtools.com — Appion G5Twin recovery machine
• trutechtools.com — Fieldpiece MR45 digital recovery machine
• www.supplyhouse.com — Fieldpiece DR82 infrared refrigerant leak detector
• www.insureon.com — Insureon
• www.nextinsurance.com — NEXT
• www.getjobber.com — Jobber
• www.housecallpro.com — Housecall Pro
• quickbooks.intuit.com — QuickBooks Online
• www.ramtrucks.com — 2026 Ram ProMaster cargo van (base)
• www.cars.com — 2026 Ford F-150 XL (base)
• www.cars.com — 2026 Ford Transit-150 cargo van (base, T-150 130in low roof RWD)
• www.coxautoinc.com — Used vehicle average listing price (all segments, not cargo-van specific)

Last updated: October 21, 2026