Emergency
Smell Gas Inside Your Home? A Texas Homeowner's Safety Checklist
If the smell is strong, leave now
A gas odor inside is not a wait-and-see problem. Get everyone out, do not touch any switch or flame, and call your gas utility or 911 from outside. Read the rest once you are safe.
Natural gas is odorless on its own, so utilities add a chemical called mercaptan that smells like rotten eggs or sulfur. That smell is a warning system, and it works, if you respond to it correctly. The wrong move, flipping a light or lighting a burner to check, is what turns a leak into a disaster. Here is the checklist every Texas homeowner should have in their head.
Do these things, in order
- 1Get every person and pet out of the house and into fresh air
- 2Do not touch light switches, thermostats, garage door openers, or appliances
- 3Do not light a match, candle, or stove, and do not start a car in an attached garage
- 4Leave the door open behind you if it is quick, but do not linger to ventilate
- 5From outside or a neighbor's, call your gas utility's emergency line or 911
- 6Do not go back in until the utility or a qualified professional says it is safe
Why the no-switch rule matters
Any electrical switch can throw a tiny spark as it opens or closes. In a room filling with gas, that spark is all it takes. This includes light switches, but also things people forget, the garage door button, a phone charger you unplug, the doorbell, an oven igniter. The safest hands during a gas scare are hands that touch nothing electrical and get you out the door.
Do not use your phone inside
Make the call from outside. A phone is an electrical device, and a call or even a screen tap indoors is an unnecessary risk. Walk out first, dial second.
Where household gas leaks come from
Once the immediate danger is handled, the utility will typically make the scene safe and may shut off gas at the meter. Finding and fixing the actual leak is where a licensed plumber comes in. Common sources include:
- Loose or corroded connections at a range, dryer, or water heater
- Aged black-iron or steel gas piping inside walls or the attic
- A cracked or leaking flex connector behind an appliance
- Damaged buried lines out to a pool heater, grill, or detached structure
- Fittings loosened by slab movement in expansive clay soil
That last one is a North Texas specialty. Our expansive clay swells and shrinks with the seasons, and that ground movement can stress buried and slab-adjacent gas lines over time, just as it does water and sewer lines.
How a pro finds and fixes it
A licensed plumber locates a gas leak with a pressure test and an electronic gas detector, isolating sections of the system until the leaking run is found. The repair might be a new connector, a re-worked joint, or replacing a corroded section of pipe. Gas work in Texas requires the right license and usually a permit, and the system should be pressure-tested and verified before gas is restored. This is not a DIY repair, and it is not one to hand to an unlicensed handyman.
Why the license matters here is simple. A gas leak is one of the few plumbing problems that can level a house, and Texas regulates gas work for exactly that reason. A licensed Master Plumber under the Texas State Board of Plumbing Examiners is trained and accountable for doing it to code, pulling the permit, and passing inspection. When you call, ask for the license, it is a fair question, and any legitimate company will answer it without hesitation.
- A pressure test that confirms the whole system holds, not just a spot check
- The exact leaking section isolated and repaired, not just tightened and hoped
- A permit and inspection where the work requires it
- A final verification before gas is turned back on and you move home
Our gas leak detection and repair service covers exactly this: finding the source, fixing it to code, and testing the whole system before you and your family move back in. If you are adding a line for a new range, outdoor kitchen, pool heater, or generator, our gas line installation crew sizes and installs it correctly the first time, with the permit and inspection handled.
When the smell is faint
Not every whiff is a five-alarm event, but treat a persistent faint odor seriously too. If it is faint and steady, still ventilate, avoid ignition sources, and call for a professional check rather than ignoring it. A small leak at a fitting can grow, and a pilot that keeps going out can be an early sign. When in doubt, get out and call.
As a Texas-licensed plumbing company serving Colleyville and North Richland Hills, we take gas calls seriously and get to them fast. Once you and your family are safe outside and the utility has cleared the scene, call (831) 290-4327 and our gas leak detection and repair team will find the source and make it right.
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Frequently Asked Questions
Utilities add a compound called mercaptan that smells like rotten eggs or sulfur, because natural gas has no odor of its own. If you notice that smell inside, treat it as a leak until proven otherwise.
