How much does it cost to replace gas lines?

Gas line replacement costs

An average gas line costs around $535, or $15 to $25 a linear foot, to install, including labor costs. However, depending on the material and length of the pipe, prices can range from $120 to $1,350. The price of your gas lines depends on several factors, including the length, size and material of the pipe and installation.

Gas line replacement costs by type

There are many different types of gas lines used for various flow levels. Each type of pipe is designed for varying durability depending on the load capacity it will be dealing with. For example, PVC is used for low-pressure single-family homes, while galvanized steel and black iron are higher-grade and can handle up to 500 pounds per square inch (psi).

Here’s what you can typically expect to pay per foot of gas line:

Gas line replacement costs by appliance

The cost to install or replace a gas line depends on the appliance being connected. Each appliance may need a different pipe size, distance from the main line or installation complexity. Here are typical cost ranges for common home appliances:

• Gas stove: $200 to $1,000 (less if close to the main supply)
• Gas dryer: $150 to $800 (depending on distance and venting needs)
• Gas fireplace: $300 to $2,000 (usually requires longer lines and more venting)
• Pool heater: $500 to $2,500 or more (often farther from house and needs larger pipes)
• Generator: $350 to $1,500 (depends on size and distance from gas meter)

Costs vary for each appliance because the distance, BTU needs and installation difficulty affect labor and material prices.

Additional gas line costs

The costs of repairing and replacing your gas lines depends on the amount of material you need and the location of your pipes. For example, if your lines are underground or behind drywall, replacing them with labor and excavation fees could cost up to $5,000. Generally, though, you can expect to pay $45 to $150 an hour for the labor of installing new gas lines.

Other costs you can expect when replacing gas lines include permits and inspections, trenching or wall repairs and removal of old gas lines.

Factors affecting the cost to replace gas lines

Many things can change the total cost of replacing gas lines. Here’s a list of the most important factors:

1. Length of the gas line: Longer runs need more materials and labor, making this the biggest cost driver.
2. Type of material: Choices like copper, steel or flexible piping have different prices and lifespans.
3. Accessibility: Lines under concrete, behind walls or in hard-to-reach places cost more to replace due to extra labor.
4. Permits and inspections: Local rules may require permits and safety inspections, adding costs.
5. Urgency of the replacement: Emergency or after-hours service can raise labor charges.
6. Geographical region: Labor and material costs change depending on where you live.

Knowing these factors can help you plan and budget for your project.

Can you DIY a gas line replacement?

Gas line replacements and repairs can be extremely dangerous. Even minor jobs should be left to the professionals.

When should a gas line be replaced?

Gas lines are built to last up to 50 years but should be checked often for damage. A professional should regularly inspect them for rust, corrosion, cracks and leaks to ensure they're running properly and are not hazardous.

Does your home warranty cover gas line repair or replacement?

Home warranties cover an extensive range of systems for normal wear and tear, including gas lines. This coverage is usually offered in the highest home warranty plan, in a plan that includes plumbing or as an add-on for an additional fee. However, home warranty contracts may have exclusions and coverage caps, so double-checking your contract might be worth it.

Bottom line

Faulty gas lines can also quickly become hazardous and cause fires and even explosions, so it's important to ensure they run properly. Calling a professional could cost $45 to $150 an hour, but you could also check if your home warranty plan covers gas line repairs and replacements to save some money.