HVAC License Requirements by State (2026)

HVAC licensing is one of the most inconsistent requirements across the United States. Some states require full contractor-level licensing with exams and bonds. Others have no state HVAC license at all -- relying on local jurisdictions or just federal EPA certification. This guide breaks down HVAC license requirements for every state so you know exactly what you need.

HVAC Licensing: How It Works

Unlike plumbing and electrical work, which are licensed in most states, HVAC regulation varies wildly. The licensing landscape breaks into three categories:

States with statewide HVAC licensing -- You need a state-issued license to perform HVAC work. This typically requires an exam, experience, and fees.
States with no statewide HVAC license -- HVAC licensing is handled at the city or county level. Requirements depend entirely on where you work.
Federal requirement (all states) -- Every HVAC technician who handles refrigerants must hold EPA Section 608 certification. This is a federal mandate that applies regardless of state licensing.

EPA 608 Certification: Required Everywhere

Before getting into state-specific requirements, understand this: EPA Section 608 certification is mandatory for any technician who buys, handles, or recovers refrigerants. This is federal law under the Clean Air Act. No exceptions.

EPA 608 has four certification types:

Type I -- Small appliances (5 lbs or less of refrigerant)
Type II -- High-pressure systems (most residential and commercial AC)
Type III -- Low-pressure systems (large commercial chillers)
Universal -- All types (recommended for career flexibility)

The EPA 608 exam costs $10-$40 depending on the testing provider (ESCO, NATE, and others are EPA-approved). The certification does not expire. There is no experience requirement -- you just need to pass the exam.

State Licensing Comparison

This table shows states that require a statewide HVAC license. Experience, exam requirements, and estimated initial costs are shown for each.

State	License Type	Min. Experience	Exam	Est. Initial Cost
Alabama	Heating & Air Conditioning Contractor / Refrigeration Contractor	2 years	Yes	$340
Alaska	Mechanical Administrator / Mechanical Contractor	Varies	Yes	$300
Arizona	C-39 Commercial HVAC / R-39 Residential / CR-39 Dual Air Conditioning and Refrigeration	4 years	Yes	$701
Arkansas	HVAC Technician / HVAC Contractor	3 years	Yes	$290
California	C-20 - HVAC	4 years	Yes	$699
Connecticut	S-1 Unlimited Heating, Piping, and Cooling Contractor	2 years	Yes	$430
Delaware	Master HVACR	2 years	Yes	$153
District of Columbia	HVAC Mechanic / HVAC Contractor	8,000 hours	Yes	$175
Florida	CMC - Certified Mechanical Contractor	4 years	Yes	$399
Georgia	Conditioned Air Contractor (Class I Restricted / Class II Unrestricted)	4 years	Yes	$377
Hawaii	C-22 HVAC Contractor (Heating, Ventilating, Air Conditioning)	4 years	Yes	$848
Idaho	HVAC Contractor	4 years	Yes	$135
Iowa	Journeyperson / Master HVAC-Refrigeration	4 years	Yes	$324
Kentucky	Journeyman / Master HVAC	2 years	Yes	$180
Louisiana	Mechanical Contractor — Heating, AC, Ventilation, Duct Work & Refrigeration	Varies	Yes	$380
Maine	Journeyman / Master Oil Burner and Solid Fuel Technician	2 years	Yes	$196
Maryland	Apprentice / Journeyman / Master HVACR Contractor	4 years	Yes	$225
Michigan	Mechanical Contractor	3 years	Yes	$325
Mississippi	Mechanical Contractor (Commercial Major / Specialty / Residential)	4 years	Yes	$520
Nevada	C-21 - Refrigeration and Air Conditioning	4 years	Yes	$1,040
New Jersey	Master HVACR Contractor License	1 years	Yes	$231
New Mexico	MH-98 - Mechanical HVAC	4 years	Yes	$401
North Carolina	Heating Contractor (H-1, H-2, or H-3)	2 years	Yes	$250
North Dakota	Class A / B / C / D Contractor (via Secretary of State)	Varies	No	$100
Ohio	HVAC Commercial Contractor	5 years	Yes	$254
Oklahoma	Journeyman / Mechanical Contractor	3 years	Yes	$420
Oregon	CCB Contractor License	Varies	Yes	$400
Rhode Island	Contractor Registration + Individual Mechanical License	Varies	Yes	$150
South Carolina	Commercial HVAC/Mechanical Contractor (Mechanical License, Groups 1-5) + Residential Specialty HVAC Contractor	2 years	Yes	$335
Tennessee	CMC-C (Mechanical - HVAC/Refrigeration)	3 years	Yes	$364
Texas	ACR Technician / Contractor	Varies	Yes	$103
Utah	S350 - HVAC Contractor	4,000 hours	Yes	$338
Virginia	Journeyman / Master HVAC (Tradesman License)	4 years	Yes	$175
Washington	Specialty Contractor Registration + Electrical Specialty Certification (06A/06B)	2 years	Yes	$313.7
West Virginia	HVAC Technician Certification	2,000 hours	Yes	$85
Wisconsin	HVAC Qualifier / HVAC Contractor	8,000 hours	Yes	$200

States Without Statewide HVAC License

A significant number of states have no statewide HVAC license requirement. In these states, you only need EPA 608 certification (federal) and any local licenses required by your city or county:

State	Notes
Colorado	Colorado has NO statewide HVAC or mechanical contractor license.
Illinois	Illinois has no statewide HVAC license.
Indiana	Indiana does NOT issue a statewide HVAC license.
Kansas	Kansas has NO statewide HVAC or mechanical contractor license.
Minnesota	Minnesota has NO statewide HVAC/mechanical contractor license, but ALL mechanical contractors must file a $25,000 bond with DLI.
Missouri	Missouri HVAC licensing varies by locality.
Montana	Montana does not require a statewide HVAC license or competency exam.
Nebraska	Nebraska does not mandate HVAC licenses at the state level.
New Hampshire	New Hampshire does not require a statewide HVAC license.
New York	NYC has the most complex HVAC licensing — split across DOB and FDNY with separate licenses for boilers, oil burners, and refrigeration.
Pennsylvania	Philadelphia and Pittsburgh both require local HVAC/mechanical contractor licenses.
South Dakota	HVAC licensing is handled at the local level in South Dakota.
Vermont	Vermont does not license HVAC contractors at the state level.
Wyoming	Wyoming does not license HVAC contractors at the state level.

"No state license" does not mean "no regulation." Major cities in these states often have their own HVAC contractor licensing. Denver requires a mechanical supervisor certificate. Chicago has a comprehensive mechanical contractor licensing system. Always check with your local building department.

Exam Requirements

States that require HVAC licensing typically mandate two exams:

Business and law exam -- Covers state contractor laws, contracts, safety regulations, and licensing rules. Usually 50-80 questions, 2-3 hours.
Trade exam -- Covers HVAC systems, refrigeration, mechanical codes, installation methods, and troubleshooting. Usually 80-120 questions, 3-5 hours.

The primary codes tested in HVAC exams include:

International Mechanical Code (IMC)
International Fuel Gas Code (IFGC)
ASHRAE standards
State-specific mechanical code amendments

Passing scores are typically 70%. Most exams are administered by PSI Services. Florida uses Pearson VUE. Georgia uses PSI/AMP. Many HVAC exams are open-book, allowing approved code references.

Costs by State

HVAC licensing costs range from under $200 in low-cost states to over $700 in states with high application and license fees.

Alabama: $340 (exam $150 + license $190). Plus a $15,000 performance bond.
Arizona: $701 (application $100 + exam $54 + trade exam $66 + license $480 + fingerprinting $67).
California: $699 (application $450 + license $200 + fingerprinting $49). Plus a $25,000 contractor bond.
Florida: $399 (application $249 + exam $150). No bond required.
Georgia: $377 (application $110 + exam $267). Plus $10,000 surety bond.
Tennessee: $364 (application $250 + exam $114). Projects under $25,000 exempt from state licensing.
Texas: $103 (application $25 + exam $78). One of the lowest-cost states.

HVAC License Reciprocity

HVAC license reciprocity is limited but does exist in some regions:

Southeast: Alabama has HVAC reciprocity with Mississippi, Tennessee, South Carolina, Ohio, and West Virginia. Tennessee recognizes Alabama, Georgia, and several other southeastern states.
Georgia: Conditioned air contractor reciprocity with Louisiana, South Carolina, and Texas.
Arizona: Trade exam waiver for contractors licensed 5+ years in Nevada, Utah, or California. Must still pass Arizona Statutes and Rules exam.

For full reciprocity details, check our reciprocity guideor visit your target state's page.

Special Case: Washington State

Washington has one of the most complex HVAC licensing structures. It requires three separate credentials:

Specialty contractor registration with L&I -- no exam or experience required, but a $15,000 bond is mandatory.
06A or 06B electrical specialty certification -- Required because HVAC work involves electrical components. 06A requires 4,000 hours of experience and an exam. 06B is a restricted version requiring 2,000 hours.
EPA Section 608 certification -- Federal requirement for refrigerant handling.

Total initial cost in Washington: approximately $379 in state fees, plus a $15,000 bond and $250,000 GL insurance.

Getting Started in HVAC

The typical path to an HVAC license:

Get EPA 608 Universal certification ($20-$40, no experience needed)
Start as an apprentice or helper under a licensed HVAC contractor
Complete 2-4 years of supervised work experience (varies by state)
Consider HVAC trade school to accelerate your timeline
Apply for your state exam when you meet experience requirements
Pass the exam and pay your licensing fees
Get bonded and insured as required by your state

In states without statewide licensing, you can start working as soon as you have EPA 608 certification. Just check local requirements for the cities where you plan to operate.

Frequently Asked Questions

Do I need a license to do HVAC work?

It depends on your state. 36 states require a statewide HVAC license. 14 states have no state-level requirement. Regardless of state licensing, you need EPA 608 certification to handle refrigerants. Check your state page for specifics.

Is EPA 608 certification enough to do HVAC work?

In states without statewide HVAC licensing, EPA 608 may be your only required credential. However, many cities require a local mechanical contractor license. And EPA 608 only covers refrigerant handling -- it does not cover ductwork, gas piping, or electrical components, which may require separate credentials.

How long does it take to get an HVAC license?

From zero experience to a full HVAC contractor license typically takes 2-5 years. Alabama requires 2 years (3,000 hours). Arizona and California require 4 years. Trade school programs (6-24 months) can substitute for some experience in many states.

What is the difference between EPA 608 and state HVAC licensing?

EPA 608 is a federal certification for refrigerant handling. It does not authorize you to perform HVAC installation, repair, or contracting. A state HVAC license authorizes you to operate as an HVAC contractor -- pulling permits, hiring employees, and running a business. You typically need both.

Can I transfer my HVAC license to another state?

Direct license transfers are rare for HVAC. Some southeastern states have reciprocity agreements that waive trade exams. Arizona offers trade exam waivers for contractors licensed 5+ years in Nevada, Utah, or California. In most cases, you will need to apply and pass the new state's exam.

Find Your State's HVAC Requirements

Select your state for detailed HVAC licensing requirements, including current fee schedules, exam topics, bond amounts, and application links.

How to get a contractor license | Contractor license costs by state | Contractor insurance requirements