If you smell gas inside your home, stop what you're doing, leave right away, and call your gas utility and 911 from outside. That's the short answer to a gas leak emergency, and acting quickly makes all the difference.
Natural gas is odorless on its own, but utilities add a rotten egg smell so leaks are easier to catch before they become dangerous. Understanding why your house smells like gas, and what to do about it, can protect your family, your neighbors, and your home. Here's what to do next.
Gas Leaks At a Glance:
- If you smell gas, get everyone out of the home immediately and leave the doors open behind you as you go.
- Never flip a light switch, use a phone, or start a car near a suspected gas leak, since a spark can ignite the gas.
- Once you're safely outside, call your gas utility's emergency line and 911, then call a licensed plumber like Rooter MD.
- Common causes of gas line leaks include corroded pipes, loose or damaged appliance connections, and accidental excavation damage.
- Routine gas line inspections catch small leaks and worn fittings before they turn into emergencies.
What Should You Do If You Smell Gas?
A gas leak emergency is not the moment to investigate. If you notice the sulfur or rotten egg smell that utilities add to natural gas, treat it as a real leak until a professional tells you otherwise. Your first job is to get everyone out safely.
Evacuate First, Ask Questions Later
Move quickly and calmly, and don't stop to gather belongings. Follow these steps in order.
- Leave the house immediately, taking family members and pets with you.
- Leave doors open behind you as you exit to help the gas ventilate, but don't stop to open windows.
- Move to a neighbor's yard or the street, well away from the house.
- Call 911 and your local gas utility's emergency line from a phone outside the home.
- Wait for the utility or fire department to confirm it's safe before going back inside.
What Should You Never Do During a Gas Leak?
Certain everyday actions can create the spark that ignites leaking gas. The American Gas Association warns against using any electrical switch, appliance, or ignition source near a suspected leak, including flipping lights on or off. Follow that advice even if the smell seems faint.
Avoid these actions until a professional clears the home:
- Don't flip light switches or unplug appliances.
- Don't use your phone, doorbell, or garage door opener inside the home.
- Don't light a match, candle, or cigarette.
- Don't start your car in an attached garage.
- Don't try to locate or fix the leak yourself.
How Do I Know If I Have a Gas Leak?
The rotten egg smell is the most common warning sign, but it isn't the only one. A hissing or whistling sound near a gas line or appliance connection can also signal escaping gas, especially in a quiet room.
Outdoors, look for dead or discolored grass over a buried gas line, dirt that appears to be blowing from a hole in the ground, or bubbles in standing water. According to DTE Energy's residential safety guidance, these outdoor signs can show up even before you notice an odor, particularly with underground line damage. If you spot any of these signs, follow the same steps as you would for a gas smell: move away and call for help.
How Does Professional Gas Leak Detection Work?
Homeowners can spot the warning signs, but finding the exact source of a leak takes specialized equipment. That precision means the right part gets repaired the first time, and your line is safe to use again. Licensed plumbers use combustible gas detectors, which sense even small concentrations of natural gas in the air near pipes, fittings, and appliance connections.
Technicians also perform a pressure test on the gas line, sealing it off and watching for pressure drops that point to a hidden leak. Bubble solution testing on visible fittings is another common step, since escaping gas creates visible bubbles at the leak point. Rooter MD's licensed plumbing team combines these methods to locate leaks accurately and confirm repairs before a line goes back into service.
What Causes Gas Line Leaks?
Gas leaks rarely happen without a reason, and most trace back to a handful of common culprits.
Corroded or aging pipes are one of the most frequent causes, especially in homes with original gas lines that have never been inspected or replaced. Metal piping breaks down over time, and small pinhole leaks can develop long before a homeowner notices any symptoms.
Appliance connection failures are another leading cause. Flexible connectors on stoves, dryers, and water heaters can loosen, crack, or corrode, particularly after a DIY appliance swap that wasn't fully tightened or tested.
Excavation damage is a third major cause, whether from a contractor digging without calling 811 first or from routine yard work like planting a tree or installing a fence. The Common Ground Alliance, the organization behind the national 811 "call before you dig" program, notes that digging without having lines marked is a leading cause of damage to buried utility lines.
Preventive Maintenance Keeps Small Problems Small
Most gas leaks are preventable with a little routine attention. A yearly inspection from a licensed plumber can catch corrosion, loose fittings, or worn appliance connectors before they become a safety issue.
Simple habits help too. Schedule a professional check whenever you install a new gas appliance, call 811 before digging in your yard, and pay attention to unusual smells or higher-than-normal gas bills, which can hint at a slow leak. Pairing these habits with regular visits from Rooter MD gives your home an extra layer of protection.
Rooter MD Is Ready When You Need Us Most
A gas leak is one of the few home issues where acting fast really matters. Getting out quickly, avoiding sparks, and calling the professionals gives your family the best chance of staying safe while the problem gets fixed correctly.
Schedule a Gas Leak Inspection or Repair with Rooter MD
If you smell gas, your first calls should always be to 911 and your utility. Once the area is confirmed safe, Rooter MD is here to help with prompt, licensed gas line leak detection and gas leak repair across the Greater Detroit metro area. We'd be glad to make sure your home stays protected long after the emergency has passed.
