Gas is how San Antonio uses its fireplaces. CPS Energy says it serves “more than 996,000 electric and 399,000 natural gas customers in San Antonio and portions of seven adjoining counties,” and utility gas heats 27.8% of the city’s occupied homes, with electricity at 70.2% and bottled or tank gas at 0.6% (ACS 2024 5-year). When a log set’s pilot will not stay lit or the burner sputters, the first question is who is allowed to fix it, and in Texas that depends on which part of the system is being touched. This is general information, not legal advice.
Gas piping is plumbing: Occupations Code chapter 1301
Occupations Code §1301.002(7) says “‘Plumbing’ means: (A) a fixture, appurtenance, appliance, or piping, including a disposal system, used to: (i) supply, distribute, circulate, or recirculate water, other liquid, or gas; … or (D) the installation, repair, service, or maintenance of a fixture, appurtenance, appliance, or piping described by Paragraph (A), (B), or (C).” Section 1301.351(a) bars anyone other than a responsible master plumber from plumbing unless “the person holds the proper license, registration, or endorsement required by this chapter” and is supervised by a licensee, and §1301.351(a-2) adds that “A person that advertises or otherwise offers to perform or provide plumbing must secure the services of a responsible master plumber.”
In practice, a new gas stub, a replaced shutoff valve or a repaired line is work for a plumber licensed by the Texas State Board of Plumbing Examiners (TSBPE) under a responsible master plumber. A chimney company that does not employ one should say so and bring one in. Section 1301.051 exempts only owners working in their own homestead.
The appliance-dealer exemption: connecting a log set
Under §1301.053(a)(4), a plumbing license is not required for “appliance installation and service work, other than installation and service work on water heaters, that involves connecting appliances to existing openings with a code-approved appliance connector if the person performs the work as an appliance dealer or an employee of an appliance dealer.” Subsection (b) adds that “Work described by this section is subject to inspection and approval as provided by applicable state law or municipal ordinance.”
Read plainly, a fireplace dealer’s technician may connect a log set to an existing gas opening with a listed connector; running new pipe or moving the stub falls back under the plumbing rule. TSBPE’s own position on hearth-dealer connections could not be confirmed, so ask the company whether it is connecting to the existing stub or running pipe. Our gas fireplace service page describes how log-set service quotes are handled.
Propane: the Railroad Commission
Outside CPS Energy’s gas mains, fireplaces often run on propane, and in parts of the Hill Country ring that is a meaningful share: 10.5% of occupied homes in Boerne’s ZIP 78006 and 9.0% in New Braunfels’ western ZIP 78132 use bottled or tank gas for heat (ACS 2024 5-year). Propane is regulated by the Railroad Commission of Texas. Natural Resources Code §113.081(a) requires a Commission license for “systems activities: the installation, service, and repair of systems … including the laying or connecting of pipes and fittings … and appliances to be used with LP-gas as a fuel” and for “appliance activities: the service, installation, and repair of appliances used … in connection with systems using LP-gas as a fuel,” with an exception where only “manufactured unvented appliances” are connected “by means of LP-gas appliance connectors, or where only duct or electrical work is performed.”
Licensed plumbers and air-conditioning contractors can register for an exemption under 16 TAC §9.13(a) by filing LPG Form 16B, and §1301.055 runs the other way: a licensed LP-gas installer needs no plumbing license for LPG system installation. If your fireplace runs on a tank, ask for the Railroad Commission license or the Form 16B registration.
TDLR and the air-conditioning license: unclear for decorative fireplaces
The Texas Department of Licensing and Regulation licenses air conditioning and refrigeration contractors under Occupations Code chapter 1302. Section 1302.002(2) defines that contracting as work on “equipment or a product in an environmental air conditioning system, a commercial refrigeration system, or a process cooling or heating system,” and §1302.251(a) says “A person may not engage in air conditioning and refrigeration contracting unless the person holds an air conditioning and refrigeration contractor license.” Furnaces and their flues clearly sit inside that chapter, and §1302.063 bars plumbers and LP-gas licensees from that contracting without this license.
Whether a decorative gas log set or gas fireplace burner counts is unclear. The chapter has an exemption in §1302.058 for “a portable or self-contained heating product that does not require the forced movement of air outside the heating unit,” but TDLR’s own FAQ for this license discusses furnaces, mini-splits and LP-gas appliances and never mentions fireplaces or gas logs, and no written TDLR interpretation was found. This post does not draw a conclusion. The practical step is to ask whether the company holds a TDLR ACR (TACL) license for that work, and nothing stronger.
City of San Antonio permits
Inside city limits, gas work goes through a Plumbing, Gas and Sewer Permit, which the City’s residential permits page lists among the trade permits pulled by trade contractors; the DSD Home Remodeling FAQ puts plumbing permits at “$50, plus the cost of each fixture” and states that “Only State licensed contractors can get electrical, mechanical, and plumbing permits.” Sweeping, inspections, caps and dampers need no City permit we could find; whether a gas insert or a reline needs further permits is not stated on the City’s pages, so the contractor confirms with Development Services. Outside the city, permits vary by city; your contractor confirms. For the service steps, see our how it works page.
So who do you call?
| Job | Who does it | Typical range |
|---|---|---|
| New gas line, stub, valve or pressure test | TSBPE-licensed plumber under a responsible master plumber; City Plumbing, Gas and Sewer permit | Quoted separately |
| Connecting a log set to an existing stub | Appliance dealer under §1301.053(a)(4), or a plumber | Part of the log-set quote |
| Thermocouple, pilot, burner cleaning, valve on the appliance | Hearth technician; ask about a TDLR ACR license | $200–$1,000 overall; thermocouple $75–$150; gas valve $150–$300 |
| Propane system or appliance | Railroad Commission licensee or Form 16B-registered plumber/ACR contractor | Quoted separately |
A gas log set still needs its flue looked at: CSIA’s summary of NFPA 211 calls for inspection “at least once a year for soundness, freedom from deposits, and correct clearances,” and an idle flue above a log set collects water, debris and nests like any other. See the chimney inspection page. If you are selling, the TREC Seller’s Disclosure Notice asks about “Natural Gas Lines,” “Gas Fixtures” and the fuel gas piping material, so keep the permit and invoices.
The one question to ask
Whoever you call, ask: who will touch the gas? A good answer names the credential: a TSBPE-licensed plumber for piping, an appliance dealer for an existing-stub connection, a Railroad Commission licensee for propane, and a yes or no on a TDLR ACR license for burner work. Add a certificate of insurance, a CSIA or NFI certification verified on csia.org or nficertified.org, and a written scope with photos. Typical prices are on our cost guide.
San Antonio Chimney Sweeps connects San Antonio-area homeowners with independent local chimney sweep, inspection and repair companies for free, no-obligation quotes. We do not offer gas-line work; the companies tell you who handles any gas piping and how. Request a free quote for gas fireplace or log-set service. This is general information, not legal advice; statutes are quoted from public mirrors and may not reflect 2025 amendments.
Frequently asked questions
Do I need a licensed plumber to fix a gas fireplace in Texas?
For the gas piping, yes. Occupations Code §1301.002(7) defines plumbing to include piping used to “supply, distribute, circulate, or recirculate water, other liquid, or gas” and its “installation, repair, service, or maintenance,” so a new stub, valve or line is work for a TSBPE-licensed plumber. Burner and log-set service on the appliance itself is a separate question; ask the company who will touch the gas.
Can a fireplace store install a gas log set without a plumber?
Occupations Code §1301.053(a)(4) exempts “appliance installation and service work … that involves connecting appliances to existing openings with a code-approved appliance connector if the person performs the work as an appliance dealer or an employee of an appliance dealer.” That covers connecting a log set to an existing stub, not running new pipe, and the work remains subject to inspection under §1301.053(b). TSBPE’s own reading was not confirmed, so ask.
Does gas fireplace service need a TDLR license in Texas?
It is unclear for decorative gas fireplaces. TDLR’s air conditioning and refrigeration license covers “process cooling or heating” systems, and its FAQ discusses furnaces and LP-gas appliances but never mentions fireplaces or gas logs. No written TDLR interpretation was found. Ask whether the company holds a TDLR ACR (TACL) license for that work, and note the answer alongside its other credentials.