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HVAC license requirements by state
There's no national HVAC license, so your state or city sets the rules. Many tie the license to a liability minimum, a bond or a net-worth test. Here's how it works in the 28 states where we're licensed, and what each license makes your business carry.
Key takeaways
- There's no federal HVAC license. States and cities license the work, and EPA Section 608 certification is the one federal layer for anyone who opens a refrigerant circuit.
- Of the 28 states on this page, 20 issue a statewide HVAC or mechanical contractor license. In the other 8, cities and counties do the licensing, or the state only registers contractors as businesses.
- Nine of those state licenses come with a written liability insurance minimum, from Florida's $100,000 to Utah's $1 million per occurrence. Others ask for a bond or proof of net worth instead.
- Many states license only the business and its qualifier. A few, like Maryland, Kentucky and Iowa, license each worker as an apprentice, journeyman or master.
Do you need a license to do HVAC work?
In almost every case, yes. The real question is which layer licenses you: the state, the city or county, or both. On top of either one sits EPA Section 608, which applies to refrigerant work in every state.
Think of it like a system with three controls. EPA certification follows the tech. A state license usually follows the company and the person who qualifies it. Local rules decide who can pull a mechanical permit in that town.
Even in states with one statewide license, cities still issue the permits. Houston, for example, wants your Texas license registered with the city before you can pull permits or schedule inspections.
Some states also block cities from piling on. Iowa's law voids local HVAC licensing. Michigan and Montana bar cities from adding their own contractor licenses. Kentucky lets local programs license contractors, but they can't demand their own insurance.
Four ways states tie insurance and bonds to an HVAC license
Every state's HVAC license falls into one of four patterns. Knowing yours tells you what a board will want on file before it issues or renews your license.
1. A state license with an insurance minimum
Texas, Florida, Iowa, Kentucky, Maryland, New Jersey, Ohio, Tennessee and Utah write a liability minimum into the license. Texas scales it by class: a Class A contractor carries at least $300,000 per occurrence, and a Class B contractor at least $100,000.
Maryland and Ohio both spell out completed operations. That's the part of a policy that responds to damage after a job is done. Tennessee ties the minimum to your license's monetary limit, from $100,000 up to $1 million. Utah's rule went to $1 million per occurrence and $2 million aggregate in April 2026.
2. A state license backed by a bond or net worth
Alabama, Arizona, California, Nevada, South Carolina and Virginia use a bond or a net-worth test. A bond protects customers and the state, not your company. Arizona sizes the bond by your yearly volume. South Carolina asks for net worth by license group, or a bond for the same amount. Virginia Class A and B firms show net worth or post a $50,000 bond.
3. A state license with no insurance or bond found
Connecticut, Georgia, Michigan, North Carolina and West Virginia license HVAC work, but none of them writes a liability minimum or a required bond into the license. Two footnotes: Georgia lets a contractor post an optional $10,000 bond with a county probate court, and West Virginia's licensing board asks for proof of workers' comp and unemployment coverage. Cities can still add their own rules. Augusta, Georgia, asks for liability coverage and a bond before it grants a local business license.
4. No state HVAC license: cities and counties decide
Colorado, Illinois, Indiana, Missouri, New York, Pennsylvania, Minnesota and Montana have no statewide HVAC contractor license. Local offices fill the gap, and some set higher limits than most states do. In Colorado, the Pikes Peak building department wants $1 million per occurrence from mechanical contractors. Pittsburgh asks the same for its mechanical license.
Two of these states still keep a statewide hook. Minnesota wants a $25,000 bond on file with its labor department. Since January 1, 2026, Montana has required a state construction contractor license of contractors with employees. To get it, you show you comply with the state's comp law.
Bonds work differently from insurance, so we cover them on their own page: HVAC contractor license bonds.
HVAC license requirements by state: all 28 at a glance
Each row is a short summary from state and city sources checked in October 2026. Rules and dollar amounts change, so confirm with the board before you apply, and open the state page for details.
| State | Licensing body or layer | Contractor license | Insurance or bond tied to it |
|---|---|---|---|
| Alabama | HACR Board | Heating and AC, or refrigeration, contractor certification | $20,000 performance bond for new applicants; no state GL minimum found |
| Arizona | Registrar of Contractors | C-39, R-39R or dual CR-39 | Bond sized by yearly volume; comp attestation |
| California | CSLB | C-20 (C-38 for refrigeration) | $25,000 bond; comp certificate on file; LLCs carry extra liability |
| Colorado | Local (Denver, Pikes Peak, Fort Collins) | City or regional license | Set locally; Pikes Peak asks $1M / $2M |
| Connecticut | Dept. of Consumer Protection | S-1, D-1 and other contractor classes | No GL or bond found; evidence of comp compliance before the license issues |
| Florida | DBPR, CILB | AC Class A or B, or mechanical | $100,000 public liability, $25,000 property damage |
| Georgia | Division of Conditioned Air Contractors | Class I or Class II | No GL minimum or required bond; an optional $10,000 probate court bond |
| Illinois | Local (Chicago, Springfield, Rockford) | Municipal license | Set locally; Chicago GC license $1M to $5M |
| Indiana | Local (Indianapolis, Allen County, others) | Local license | Set locally; Indianapolis adds a $5,000 bond |
| Iowa | Plumbing and Mechanical Systems Board | Contractor license plus a master | $500,000 public liability and $5,000 bond, set by the board |
| Kentucky | DHBC, Division of HVAC | Master HVAC contractor | $500,000 GL and $300,000 property damage |
| Maryland | State HVACR Board | Master, master restricted or limited | $300,000 GL with completed ops, $100,000 property damage |
| Michigan | LARA, Bureau of Construction Codes | Mechanical contractor, by classification | None found in the statute |
| Minnesota | Local, plus a state bond | City license (Minneapolis, St. Paul, Rochester) | $25,000 state mechanical bond; cities may add GL |
| Missouri | Local (Kansas City, St. Louis County, Springfield) | Local license | Set locally; confirm with the city or county |
| Montana | Dept. of Labor and Industry | Construction contractor license since Jan. 1, 2026, for firms with employees (no HVAC trade license) | Comp compliance; no GL or bond |
| Nevada | State Contractors Board | C-21 and subclasses | Board-set bond, $1,000 to $500,000; comp proof |
| New Jersey | State HVACR Board | Master HVACR contractor | $500,000 GL and $3,000 bond |
| New York | Local (NYC, Westchester, Nassau) | Local license | Set locally; NYC oil burner installers need $1M |
| North Carolina | Plumbing, Heating and Fire Sprinkler board | H-1, H-2 or H-3, Class I or II | None found in the statute; confirm with the board |
| Ohio | OCILB | HVAC or refrigeration contractor | $500,000 liability with completed ops |
| Pennsylvania | Local, plus state home improvement registration | Local license (Pittsburgh) | HICPA $50,000 / $50,000; Pittsburgh $1M / $2M |
| South Carolina | LLR Contractor's Licensing Board | Mechanical, Air Conditioning (Groups 1 to 5) | Net worth or working capital by group, or a bond for the same amount |
| Tennessee | Board for Licensing Contractors | CMC-C, for jobs of $25,000 or more | GL of $100,000 to $1M by license limit, plus comp |
| Texas | TDLR | ACR Class A or Class B | Class A $300,000; Class B $100,000 per occurrence |
| Utah | DOPL | H100 HVAC contractor | $1M / $2M GL; comp or waiver |
| Virginia | DPOR Board for Contractors | Class A, B or C with HVAC | No GL minimum; Class A/B net worth or $50,000 bond |
| West Virginia | Division of Labor; Contractor Licensing Board | HVAC classification, plus tech cards | No GL minimum in the law; proof of comp and unemployment coverage |
HVAC journeyman, master and technician licenses vs. the contractor license
A tech's card and a company's license are two different things. In many states, only the business holds a license, through one qualified person. In others, each worker holds a card of their own.
States that license only the business
Arizona, California, Florida, Nevada, New Jersey, Ohio, Michigan and Georgia license the contractor, not the techs. The company names a qualifier, the person whose experience and exam back the license. Ohio's law calls the employees who do the work "tradespersons" and gives them no state license.
If that qualifier quits, the license can be at risk. Michigan, for example, gives a business 90 days to name a new licensed contractor of record.
States with a ladder for each worker
Kentucky licenses apprentices, journeymen and masters. Iowa does the same and adds a separate contractor license that must employ a master. In Maryland, every HVACR worker needs a license, even apprentices. Connecticut pairs each contractor class with a journeyperson class.
Texas and West Virginia sit in between. Texas techs must register with TDLR or hold its certification. West Virginia issues a technician card to each worker.
A journeyman card alone usually doesn't let you sell jobs under your own name. In Maryland, journeymen work under a licensed contractor. The contractor carries the insurance. For your own crew, see our page on insurance for HVAC technicians.
EPA Section 608: the federal layer on every HVAC license
No state license replaces EPA 608 certification. Under current EPA rules, anyone who may open the refrigerant circuit on the job must be certified. That covers service, repair and disposal work. There are four types: Type I, Type II, Type III and Universal.
The business feels it too. Supply houses may sell refrigerant only to a certified tech or to a company that employs one and shows proof. Federal civil penalties can reach $124,426 per day for each violation.
We cover the owner's side in our EPA 608 guide for HVAC businesses. For the rules themselves, go to the EPA's Section 608 certification page.
How to get an HVAC contractor license, and how long it takes
The steps below are the general order most owners follow. The board in your state sets the actual rules, exams and forms, so check with it first.
- Find your layer. Use the table above to see if your state, your city or both license HVAC contractors.
- Pick your license class. Classes often split by system size or job value. Texas Class B covers systems up to 25 tons of cooling, and Tennessee's state license starts at $25,000 jobs.
- Line up the qualifier. Confirm that you, or the person backing the license, meet the experience and exam rules.
- Get techs EPA certified. Anyone opening a refrigerant circuit needs the right 608 type.
- Set up the insurance or bond before you apply. Many boards won't issue the license until proof is on file.
- Keep it current. Renew on time, and tell your agent about any name or ownership change so the paperwork follows.
How long it takes depends on where you start. Most of the time goes into the experience requirement, not the paperwork.
In Kentucky, a journeyman license takes two years in the trade plus an exam. A master license takes two more years. Iowa asks for four years as a registered apprentice before the journeyperson exam. Arizona and Nevada want a qualifier with about four years of trade experience. West Virginia's full technician card calls for 2,000 hours of HVAC work and training.
Starting a shop from scratch? Our guide on how to start an HVAC business walks through the first policies and bonds.
What an HVAC license minimum won't do for your business
A license minimum is a floor set to protect the public. It isn't sized to your work. Texas asks a Class B contractor for $100,000 per occurrence. Water from one overflowing drain pan in a finished attic can do a lot of damage. And many commercial contracts ask for higher limits than any board does.
Most of these rules ask only for liability. Your techs, vans and tools need their own policies: workers' comp, commercial auto and equipment coverage. Start with general liability for HVAC contractors, then add an umbrella when contracts ask for higher limits. How a claim is handled always depends on your policy wording.
What you pay depends on your payroll by class code, your annual revenue, your mix of installation and service work, residential versus commercial jobs, the vans you run, your claims history and the limits you pick.
We're an independent agency, and we work with 12+ A-rated carriers in all 28 states on this page. When you start your quote, tell us which license you hold, and our team will compare your current limits with what that board expects.
Frequently asked questions
How long does it take to get an HVAC license?
Do I need a license to do HVAC work in every state?
Can I run my own HVAC business with a journeyman license?
Is an HVAC license the same as EPA 608 certification?
How much insurance does an HVAC license require?
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