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Texas HVAC license types explained: TACLA, TACLB, and technicians

Texas regulates HVAC work through TDLR. A TACLA is an unlimited-tonnage contractor license, a TACLB is capped at 25 tons, and technicians work under them. Here's what each license actually lets a contractor do.

Updated

In Texas, "HVAC license" isn't one thing. The state regulates air conditioning and refrigeration work through the Texas Department of Licensing and Regulation (TDLR), and the license a contractor holds tells you the size of jobs they're allowed to take and whether they can run a business at all. Here's how to read it.

The short version

There are two layers:

  • Contractor licenses — held by the business (or the responsible individual who qualifies it). The two classes are TACLA (unlimited) and TACLB (capped at 25 tons). This is the license that lets a company legally bid and contract for HVAC work.
  • Technician registrations — held by the people doing the hands-on work under a licensed contractor. A technician cannot contract for work on their own.

When you hire an HVAC company, the contractor license is the one to verify. Search a name or license number to see the class, status, and expiration.

TACLA vs TACLB — the 25-ton line

Both are Air Conditioning and Refrigeration Contractor licenses. The difference is capacity:

  • TACLA (Class A) — no tonnage limit. A Class A contractor can work on systems of any size, from a home split system to a large commercial chiller.
  • TACLB (Class B) — limited to 25 tons of cooling and 1.5 million BTU/hour of heating. That covers virtually all residential and light-commercial work, but not large commercial systems.

For a typical home repair or replacement, either class is fully qualified. The distinction matters most on bigger commercial jobs — if a large system is involved, the contractor needs a Class A (TACLA) license.

Endorsements: air conditioning vs refrigeration

A contractor license also carries one or both of two scopes:

  • Environmental Air Conditioning — comfort heating and cooling (what most homeowners are hiring for).
  • Commercial Refrigeration and Process Cooling — coolers, freezers, and process refrigeration.

A residential HVAC contractor will typically hold the air conditioning endorsement. The point: the endorsement should match the work. A refrigeration-only license isn't the right fit for your home's AC.

Browse every licensed HVAC contractor by county to see who's licensed in your area.

Technicians: who's actually at your house

The person turning the wrenches is usually a technician, working under a licensed contractor. TDLR recognizes two levels:

  • Registered ACR Technician — the entry pathway; a technician building experience.
  • Certified ACR Technician — has passed the state exam and documented field experience.

Neither registration lets a technician contract for work independently — only a licensed contractor (TACLA/TACLB) can do that. So if an individual technician is offering to take your job directly, ask which contractor license backs the work. Browse licensed A/C technicians by county.

One more license you'll see: EPA 608

Handling refrigerant requires a federal EPA Section 608 certification — separate from the TDLR license. It's not something TDLR issues, but any technician working with refrigerant should hold it. It's a reasonable thing to ask about, especially for AC repairs involving a recharge.

How to verify an HVAC license

You have two free options, and they pull from the same source:

See exactly what we cover and how often we sync.

Frequently asked questions

What's the difference between TACLA and TACLB?

TACLA (Class A) has no tonnage limit and can handle systems of any size. TACLB (Class B) is capped at 25 tons of cooling. For most home work either is fully qualified; large commercial jobs require Class A.

Does my HVAC contractor need a license for a simple repair?

Yes. Texas requires an ACR contractor license to perform air conditioning and refrigeration work for a customer, including repairs. The technician doing the work operates under that contractor's license.

Is a technician the same as a licensed contractor?

No. A registered or certified technician works under a licensed contractor and cannot contract for work independently. The contractor license (TACLA/TACLB) is the one that authorizes the business.

How do I know if an HVAC license is still active?

Look it up by name or number on licensed-tx or TDLR. An active status means the license is current; expired means the holder let it lapse and isn't authorized until they renew.

What is EPA 608 and is it required?

EPA Section 608 is a federal certification required to handle refrigerant. It's separate from the Texas license but expected of any technician working with refrigerant.

Every license fact on licensed-tx is published from the TDLR All Licenses dataset and refreshed nightly. We don't edit the underlying records — we make them readable and link back to the source.