Signs Your Gas Line Needs Repair or Replacement

Gas line problems can develop slowly — a small leak underground, corrosion at a joint, or a flexible connector that is past its service life. Catching the warning signs early can prevent a larger safety concern and a more expensive repair later.

### Hissing or whistling sounds

A hissing sound near gas pipes, appliances, or the gas meter can indicate a pressurized gas leak. Even a small leak can create an audible sound. If you hear hissing and smell gas, leave the home immediately and call the gas utility or emergency services from a safe location.

### Rotten-egg smell

Natural gas is odorless, so utility companies add a chemical called mercaptan that smells like sulfur or rotten eggs. If you notice this smell — even faintly — there may be a gas leak. Do not ignore a slight odor that comes and goes.

### Dead or dying plants in one spot

A gas leak underground can kill grass, shrubs, or plants in a concentrated area — even if the rest of the yard looks healthy. The gas displaces oxygen in the soil, suffocating roots. If plants are dying in one spot with no other explanation, a gas line may be leaking below.

### Higher gas bills

If your gas usage habits have not changed but your bill keeps going up, gas may be escaping somewhere between the meter and your appliances. A can confirm whether a leak is the cause.

### Appliances that struggle to stay lit

A stove burner that flickers, a water heater pilot that keeps going out, or a furnace that cycles on and off may be getting insufficient gas flow — possibly from a leak, a partially closed valve, or a corroded pipe that is restricting flow.

### Visible corrosion on exposed pipes

If you can see gas piping in the attic, basement, garage, or at appliance connections, look for rust, green or white oxidation, flaking metal, or wet spots around joints. Corrosion weakens the pipe and can eventually cause a leak.

### Old flexible connectors

Uncoated brass flexible gas connectors installed before the 1990s can crack over time. If your appliances are connected with older uncoated brass connectors, they should be replaced with modern coated stainless steel connectors.

Replacement may be the right choice when:

Replacing aging gas lines before they fail is almost always less expensive and less disruptive than an emergency replacement after a leak is detected.

Leave the home immediately. Do not use phones, light switches, or appliances while inside. Call your gas utility or emergency services from a safe location.

Schedule a . A professional can check for leaks, assess pipe condition, and recommend whether repair or replacement is the right next step.