# HVAC License Requirements by State: Technician Rules, Contractor Classes and Size Limits

HVAC licensing is set by each state, on top of the federal EPA 608 refrigerant certification. Texas registers technicians and licenses ACR contractors statewide; Florida and North Carolina license contractors by system size; California licenses C-20 contractors and doesn't certify HVAC techs. Most contractor licenses need two to four years of experience and an exam.

## Key takeaways

- Federal EPA Section 608 certification is required for handling refrigerant in every state. It isn't a state license.
- Many states split contractor licenses by equipment size: Texas and Florida at 25 tons, North Carolina at 15 tons.
- Texas is the only state on this page with a statewide technician credential ($20 registration).
- Experience for a contractor license runs from 4,000 hours in North Carolina to 48 months in Texas and four years in Florida and California.
- CE varies: 8 hours a year in Texas, 14 hours every two years in Florida, none in North Carolina.

## Do you need a license to work on HVAC systems?

Almost everywhere you need two things. The first is federal: [EPA Section 608 certification](https://www.epa.gov/section608) to buy and handle refrigerant (see our [EPA 608 guide](https://www.brix.so/certifications/epa-608)). The second is whatever your state requires, which can be a technician registration, a contractor license, or both. States differ most on whether they license the individual tech at all.

> **Last verified**
>
> Each cell links the official board page or statute it came from, checked on 2026-10-24.

## HVAC licensing compared by state

**HVAC licensing in four states (official boards)**

| State | Who licenses | Technician credential | Contractor size split | Contractor experience | Continuing education |
| --- | --- | --- | --- | --- | --- |
| [Texas](https://www.brix.so/licensing/hvac/texas) | TDLR ACR program ([TDLR](https://www.tdlr.texas.gov/acr/acr.htm)) | Statewide registration, $20, age 16+ ([TDLR](https://www.tdlr.texas.gov/acr/technician-apply.htm)) | Class B up to 25 tons cooling / 1.5M BTU heating; Class A unlimited ([TDLR](https://www.tdlr.texas.gov/acr/contractor-apply.htm)) | 48 months in the last 72 ([TDLR](https://www.tdlr.texas.gov/acr/contractor-apply.htm)) | 8 hours yearly for contractors ([TDLR](https://www.tdlr.texas.gov/acr/acrce.htm)) |
| [Florida](https://www.brix.so/licensing/hvac/florida) | DBPR CILB ([CILB](https://www2.myfloridalicense.com/construction-industry/)) | Local journeyman licenses only ([Fla. Stat. 489.1455](https://www.leg.state.fl.us/statutes/index.cfm?App_mode=Display_Statute&URL=0400-0499/0489/Sections/0489.1455.html)) | Class B up to 25 tons / 500,000 BTU per system; Class A unlimited ([CILB](https://www2.myfloridalicense.com/construction-industry/)) | 4 years, 1 as foreman ([Fla. Stat. 489.111](https://www.flsenate.gov/Laws/Statutes/2025/489.111)) | 14 hours every 2 years ([CILB](https://www2.myfloridalicense.com/construction-industry/)) |
| [California](https://www.brix.so/licensing/hvac/california) | CSLB, C-20 classification ([CSLB](https://www.cslb.ca.gov/about_us/library/licensing_classifications/Licensing_Classifications_Detail.aspx?Class=C20)) | None found on CSLB; EPA 608 applies | No size split | 4 years in the classification ([CSLB](https://www.cslb.ca.gov/contractors/applicants/contractors_license/exam_application/experience_for_exam.aspx)) | No CE on the CSLB pages we checked |
| [North Carolina](https://www.brix.so/licensing/hvac/north-carolina) | PHFS board ([G.S. 87-21](https://www.ncleg.gov/enactedlegislation/statutes/html/bysection/chapter_87/gs_87-21.html)) | Technician licenses under a contractor ([NC board](https://nclicensing.org/wp-content/uploads/2026/02/PHFP-Exam-App-2026-01.pdf)) | Heating Group 3 up to 15 tons; Group 2 over 15 tons ([G.S. 87-21](https://www.ncleg.gov/enactedlegislation/statutes/html/bysection/chapter_87/gs_87-21.html)) | 4,000 hours ([NC board](https://nclicensing.org/wp-content/uploads/2026/02/PHFP-Exam-App-2026-01.pdf)) | None since 2012 ([NC FAQ](https://nclicensing.org/faq/)) |

_Verified 2026-10-24. More states will be added as each is checked against its board._

## Why do HVAC licenses have tonnage limits?

Because the risk and complexity rise with system size, many states let you start with a smaller-scope license. Texas Class B covers cooling systems of 25 tons and under ([TDLR](https://www.tdlr.texas.gov/acr/contractor-apply.htm)). Florida Class B is limited to 25 tons of cooling and 500,000 BTU of heating in any one system ([CILB](https://www2.myfloridalicense.com/construction-industry/)). North Carolina draws the line at 15 tons between Heating Group 3 and Group 2, and counts every single-family residence system as Group 3 "regardless of size" ([G.S. 87-21](https://www.ncleg.gov/enactedlegislation/statutes/html/bysection/chapter_87/gs_87-21.html)). For a residential service company, the smaller license usually covers everything you'll touch.

## Which states license HVAC technicians?

Of these four, Texas is the only one with a statewide credential for helpers: anyone assisting a licensed ACR contractor on maintenance or repair must register with TDLR ([TDLR](https://www.tdlr.texas.gov/acr/technician-apply.htm)). Florida lets counties issue HVAC journeyman licenses after a state-approved apprenticeship or 12,000 hours of on-the-job training, and requires other Florida localities to recognize them ([Fla. Stat. 489.1455](https://www.leg.state.fl.us/statutes/index.cfm?App_mode=Display_Statute&URL=0400-0499/0489/Sections/0489.1455.html)). North Carolina issues technician licenses for people working under a contractor. California's state-level HVAC license is the C-20 contractor license; we found no separate technician license on CSLB.

> **Locally licensed: check your county or city**
>
> Florida HVAC journeymen are licensed by counties and cities. In other states, cities may add their own mechanical permit or registration rules. Ask the local building department before your first job there.

## Who can install a heat pump?

Heat pumps are pushing this question into every state. In California, CSLB says HVAC system heat pumps fall under the C-20, while heat pump water heaters can go to a C-20 or a C-36 plumber; a C-10 electrician can upgrade the panel but can't contract for the heat pump itself (details on our [California HVAC page](https://www.brix.so/licensing/hvac/california)). Other boards describe scope in their own words, so read your state's classification text before you bid a heat pump job on a license you hold for something else. When a job crosses trades, the electrical and plumbing tie-ins may need their own licensed contractor.

## How to get an HVAC contractor license

1. Get EPA 608 certified; try our [EPA 608 Core practice test](https://www.brix.so/practice/epa-608/core).
2. Register as a technician if your state requires it.
3. Log supervised experience: 2 to 4 years depending on the state.
4. Pass the state's trade and business exams.
5. Meet insurance, bond and workers' comp rules. California C-20 contractors can't file a workers' comp exemption ([CSLB](https://www.cslb.ca.gov/contractors/applicants/contractors_license/exam_application/Issuing_My_License.aspx)).
6. Set up the business: [how to start an HVAC business](https://www.brix.so/start/hvac) and the [HVAC trade guide](https://www.brix.so/for/hvac).

If you're thinking past the license to the shop, the gap is usually phones and scheduling, not technical skill. See [electrician licensing by state](https://www.brix.so/licensing/electrician) and [plumbing licensing by state](https://www.brix.so/licensing/plumbing) if you'll hire across trades.

BRIX tracks licenses, insurance certificates and permits and flags renewals before they lapse. It also answers no-cool and no-heat calls when every tech is out, books the job and sends the quote and invoice from one customer record.

- [Compliance and permit tracking](https://www.brix.so/#use-cases): Tracks licenses, safety documents and permits and flags renewals before they lapse.
- [AI receptionist](https://www.brix.so/features/ai-receptionist): Answers every call 24/7, qualifies the caller, books the job and texts back anyone it misses.
- [Quotes and estimates](https://www.brix.so/features/quotes-estimates): Builds accurate quotes on site and follows up on every open estimate.
- [Invoicing and payments](https://www.brix.so/features/invoicing-payments): Turns finished jobs into invoices and politely chases unpaid ones until the money is in your account.

## Frequently asked questions

### Is EPA 608 the same as an HVAC license?

No. EPA Section 608 certification is a federal requirement for handling refrigerant. State HVAC licenses, such as a Texas ACR contractor license or a California C-20, are separate and issued by state boards. Most HVAC techs need EPA 608 plus whatever their state requires.

### Which states require an HVAC technician license?

Of the states we've verified, Texas requires helpers to register with TDLR as ACR technicians. Florida lets counties issue journeyman HVAC licenses, and North Carolina issues technician licenses for people working under a contractor. California licenses HVAC contractors, not technicians.

### What is the difference between a Class A and Class B HVAC license?

In Texas and Florida, Class B limits the size of equipment you can work on (25 tons of cooling in both), while Class A has no size limit. Florida's Class B also caps heating at 500,000 BTU per system, and Texas's at 1.5 million BTU per hour.

### How long does it take to get an HVAC contractor license?

Usually two to four years of experience. North Carolina requires 4,000 hours, Texas 48 months within the last 72 (or 36 after a year as a certified tech), and Florida and California four years.

### Do HVAC contractors need continuing education?

It varies by state. Texas ACR contractors need 8 hours each yearly renewal, Florida CILB contractors 14 hours every two years, and North Carolina eliminated its CE requirement at the end of 2012.

## Related

- [How to Get an HVAC License in Texas: TDLR Registration, Certification and Contractor Classes](https://www.brix.so/licensing/hvac/texas)
- [How to Get an HVAC License in Florida: Class A, Class B and Mechanical Contractors](https://www.brix.so/licensing/hvac/florida)
- [How to Get an HVAC License in California: The CSLB C-20 Contractor License](https://www.brix.so/licensing/hvac/california)
- [How to Get an HVAC License in North Carolina: Heating Groups 1, 2 and 3](https://www.brix.so/licensing/hvac/north-carolina)
- [Electrician License Requirements by State: Who Licenses You, Hours, Exams and CE](https://www.brix.so/licensing/electrician)
- [Plumbing License Requirements by State: Journeyman, Master and Contractor Rules](https://www.brix.so/licensing/plumbing)
- [EPA 608 Certification: Who Needs It and How to Get It](https://www.brix.so/certifications/epa-608)
- [How to Start an HVAC Business in 2026 (Costs, Licenses and First Customers)](https://www.brix.so/start/hvac)
- [HVAC Software That Answers the Phone, Books the Tech and Keeps the Books](https://www.brix.so/for/hvac)
- [BTU Calculator](https://www.brix.so/tools/btu-calculator)

## Change log

- 2026-10-24: Hub published comparing Texas, Florida, California and North Carolina HVAC licensing, each cell linked to the official board.

## Sources

- [TDLR — Air Conditioning and Refrigeration program](https://www.tdlr.texas.gov/acr/acr.htm) (checked 2026-10-24)
- [TDLR — ACR contractor license](https://www.tdlr.texas.gov/acr/contractor-apply.htm) (checked 2026-10-24)
- [TDLR — Technician registration](https://www.tdlr.texas.gov/acr/technician-apply.htm) (checked 2026-10-24)
- [TDLR — ACR continuing education](https://www.tdlr.texas.gov/acr/acrce.htm) (checked 2026-10-24)
- [Florida DBPR — Construction Industry Licensing Board](https://www2.myfloridalicense.com/construction-industry/) (checked 2026-10-24)
- [Florida Statutes 489.1455 — Journeyman](https://www.leg.state.fl.us/statutes/index.cfm?App_mode=Display_Statute&URL=0400-0499/0489/Sections/0489.1455.html) (checked 2026-10-24)
- [Florida Statutes 489.111 — Licensure by examination](https://www.flsenate.gov/Laws/Statutes/2025/489.111) (checked 2026-10-24)
- [CSLB — C-20 classification](https://www.cslb.ca.gov/about_us/library/licensing_classifications/Licensing_Classifications_Detail.aspx?Class=C20) (checked 2026-10-24)
- [CSLB — Qualifying experience](https://www.cslb.ca.gov/contractors/applicants/contractors_license/exam_application/experience_for_exam.aspx) (checked 2026-10-24)
- [CSLB — Issuing my license (workers' comp)](https://www.cslb.ca.gov/contractors/applicants/contractors_license/exam_application/Issuing_My_License.aspx) (checked 2026-10-24)
- [N.C. Gen. Stat. 87-21](https://www.ncleg.gov/enactedlegislation/statutes/html/bysection/chapter_87/gs_87-21.html) (checked 2026-10-24)
- [NC PHFS Board — Exam application (2026-01)](https://nclicensing.org/wp-content/uploads/2026/02/PHFP-Exam-App-2026-01.pdf) (checked 2026-10-24)
- [NC PHFS Board — FAQ](https://nclicensing.org/faq/) (checked 2026-10-24)
- [EPA — Section 608 technician certification](https://www.epa.gov/section608) (checked 2026-10-24)

Last verified against [Texas Department of Licensing and Regulation, ACR program (and each state board linked in the table)](https://www.tdlr.texas.gov/acr/acr.htm) on 2026-10-24.

Talk to BRIX: call or text (518) 588-1122, email eeharris2004@gmail.com, or book a 15-minute call at https://cal.com/ethanharris/15min.

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Written by BRIX Editorial Team. Last updated 2026-10-24. General information, not tax, legal or financial advice.
Canonical: https://www.brix.so/licensing/hvac