Natural Gas Lines

Signs of a Gas Leak, and What to Do

Natural gas is naturally odorless, which is why utility companies add a compound called mercaptan that produces the distinctive rotten egg smell most people associate with a gas leak. That smell is intentional and is usually the clearest sign something is wrong. Other signs include a hissing sound near a gas line or appliance connection, dead or dying vegetation in an otherwise healthy area of a yard where a line runs underground, an unexplained increase in your gas bill, and physical symptoms like headaches, dizziness, or nausea that improve when you leave the property.

If you smell gas or suspect a leak, safety comes before anything else. Leave the property immediately, avoid using light switches, phones, or anything that could create a spark, and call your gas utility company or emergency services from a safe distance away from the building. Once the immediate emergency has passed and the utility company has responded, that's when a licensed plumber comes in to locate and repair the actual source of the leak.

What Causes Gas Line Damage

Understanding what typically damages a gas line helps explain both the repair and how to prevent it from happening again:

• Corrosion from age, particularly in older metal gas lines that have been in the ground or in a wall for decades
• Excavation or landscaping work that strikes a buried line without first confirming its location
• Ground shifting and settling, common throughout Southern California, which can stress and eventually crack rigid gas piping
• Loose or damaged connections at appliances, often behind stoves, dryers, or water heaters that have been moved or serviced
• Improper original installation, including undersized piping or connections that don't meet code

If we trace a leak back to one of these systemic causes, we'll flag it, since it often points to a broader issue worth addressing rather than a single isolated failure.

Routine Gas Line Inspections Catch Problems Early

Most gas line failures don't happen overnight. Corrosion develops gradually, connections loosen slowly over years of appliance use, and ground shifting stresses a line in small increments long before a crack or break actually occurs. A routine gas line inspection checks connections, tests for pressure loss, and examines exposed piping for early signs of corrosion or damage, catching problems while they're still a straightforward fix rather than an emergency.

This matters most for older properties throughout Los Angeles, Orange County, the Inland Empire and San Diego, where original gas piping may be decades old, and for commercial properties where a gas line serves multiple appliances or an entire kitchen. Including a gas line check as part of a broader Preventative Maintenance Plan means the system gets looked at on a predictable schedule rather than only after something has already gone wrong.

Repair, Trenchless Restoration, or Full Replacement

Not every gas line issue requires digging up the entire line. A small puncture, a corroded section, or a loose connection can often be repaired or patched directly, restoring the line without major excavation. For more extensive damage along a buried line, trenchless restoration methods, including cured-in-place pipe lining, can rehabilitate a gas line from the inside in some situations, avoiding the excavation a traditional replacement would require.

Full replacement becomes the right call when a line is corroded or damaged extensively enough that repair would only delay the inevitable, or when a property is upgrading its gas system to accommodate new appliances or increased demand. We assess the specific damage and the line's overall condition before recommending a repair, trenchless restoration, or full replacement, rather than defaulting to the most expensive option.

New Gas Line Installation and Permitting

Adding a new gas appliance, a range, a fireplace, an outdoor grill, or a backup generator, often means running a new gas line or extending an existing one. This work has to meet local building codes and typically requires a permit before installation begins, along with an inspection once the work is complete. We handle the permitting process and coordinate the required inspection, so you're not left navigating utility company and municipal requirements on your own.

Once a new line or repair is complete, the entire line is pressurized and tested to confirm it's holding pressure correctly with no leaks, a step known as pressure testing, before we consider the job finished and restore gas service to your appliances. This isn't an optional step we skip to save time, it's the confirmation that the work is actually safe.

Frequently Asked Questions About Natural Gas Lines