Warning Signs of a Gas Line Problem in Your Home

Natural gas is a convenient and efficient fuel source used in most Banning homes for heating, water heating, cooking, and clothes drying. The vast majority of the time, gas systems operate safely and without incident. But gas line leaks and failures are serious hazards — natural gas is flammable and explosive, and incomplete combustion produces carbon monoxide, a colorless and odorless poisonous gas. Recognizing the warning signs of a gas line problem and knowing exactly what to do in response can save lives.

Warning Sign 1: The Smell of Rotten Eggs or Sulfur

Natural gas is odorless in its natural state. Gas utilities add mercaptan — a sulfur compound — specifically so that leaks can be detected by smell. The distinctive rotten egg or sulfur odor is the most important warning sign of a gas leak. Even a faint smell of gas should be taken seriously. If you smell gas in your home, do not turn any electrical switches on or off (including lights), do not use a phone inside the home, do not create any sparks, and do not attempt to locate or stop the leak yourself. Leave the home immediately, leaving doors open as you exit, and call 911 and your gas utility from outside the home.

Warning Sign 2: Hissing or Whistling Sound Near a Gas Line

A hissing or whistling sound from near a gas appliance, a gas meter, or from within a wall or floor area where gas lines run indicates gas escaping under pressure through a leak. This sound is often easier to detect when the home is quiet. If you hear an unusual hissing sound near any gas component and cannot immediately identify an innocent source, treat it as a potential gas leak — leave and call for emergency service.

Warning Sign 3: Dead Vegetation in an Unusual Pattern

Underground gas line leaks can kill the vegetation above the pipe. If you notice a strip of dead or dying grass, shrubs, or plants in an unusual pattern — particularly one that follows a relatively straight line through the yard — it may be above an underground gas line leak. Soil discoloration, bubbling water, or blowing dirt also indicate an underground gas leak. These symptoms are less immediately dangerous than an indoor gas smell but require prompt reporting to your gas utility and professional inspection.

Warning Sign 4: Physical Symptoms in People or Pets

Exposure to a slow gas leak or to carbon monoxide can produce physical symptoms that are sometimes mistaken for other causes: headaches, dizziness, nausea, fatigue, difficulty breathing, or disorientation. If multiple people in the household experience similar symptoms simultaneously, or if pets seem unusually lethargic or disoriented, carbon monoxide or gas exposure is a possibility. Get everyone out of the home immediately and seek fresh air. Call 911.

Warning Sign 5: Your Gas Appliances Are Underperforming

A furnace that takes longer to heat the home, a water heater that doesn't achieve full temperature, or gas burners with unusually low flames may indicate reduced gas pressure from a leak upstream of the appliance. This symptom alone is less definitive than a gas smell or hissing sound, but combined with other indicators, it should prompt a professional gas line inspection. Do not attempt to adjust gas pressure or connections yourself — gas line work requires a licensed professional.

Warning Sign 6: High Gas Bills Without Explanation

An unexplained increase in your gas bill — particularly during months with similar weather and usage patterns as prior years — can indicate a gas leak that is allowing gas to escape without being burned. If you've ruled out increased appliance usage and the bills continue to climb, a gas line inspection is warranted. Your gas utility can test for leaks at the meter; a licensed plumber can inspect the interior gas line distribution.

What to Do in a Gas Emergency

• Do not turn any electrical switches, lights, or appliances on or off
• Do not use any open flame — no candles, lighters, or matches
• Do not use a phone or any electronic device inside the home
• Open doors as you leave to ventilate if you can do so without delay
• Leave the home immediately with all occupants and pets
• Call 911 from outside or a neighbor's home
• Contact your gas utility's emergency line
• Do not re-enter the home until it has been cleared by emergency responders and the gas utility

Gas Line Inspection and Repair in Banning

After a gas emergency has been resolved, or if you suspect a non-emergency gas issue such as a gradual leak, a carbon monoxide detector alarm, or deteriorated gas line components, a licensed gas plumber should inspect the system. Our team serving Banning and Riverside County is licensed to perform gas leak detection, gas line repair, and gas line installation. We use calibrated detection equipment to locate leaks without guesswork and repair or replace the affected section to current code standards.

Reviewed by our master plumber

Mike Reyes · Lead Master Plumber & Owner

Master plumber with 20+ years of hands-on experience serving Banning and the San Gorgonio Pass.

More about our team