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Gas line installation

Gas Fireplace Services

Gas Line Installation for San Francisco Homes

A new gas fireplace, insert or set of gas logs needs a properly sized, tested gas supply before it can light. We run that line, connect it with its own shutoff, and check the appliance before we leave.

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Gas Supply Lines

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If you smell gas right now

Leave the building and get everyone out. Don't flip light switches, use phones or light anything while you're inside. Once you're outside, call the gas utility or 911.

What gas line installation involves

Gas line installation means running a dedicated pipe from your home's existing gas supply to the spot where a gas appliance will sit. For us, that is usually a fireplace, an insert or a set of gas logs, though we also handle other gas appliance work. The job covers the route, the pipe, a shutoff valve near the appliance, the final connection, and a leak test before anything is lit.

Technician fitting a linear gas fireplace

The line has to deliver enough gas for the appliance it feeds. If the pipe is too small, or it runs too far for its size, the flame can be weak or uneven even when the appliance itself is fine. Most of the planning goes into getting that sizing and route right.

When a home needs a new gas line

A gas line is usually part of a bigger project, not a separate repair. Common reasons include:

  • Adding a gas fireplace where there was none. The line is part of gas fireplace installation and is planned with the unit.
  • Putting gas logs into an existing masonry fireplace that has never had a gas supply. The line is part of our gas log installation service.
  • Switching from wood to gas. If you're still deciding, our guide to gas vs wood burning fireplace covers the tradeoffs.
  • Moving a gas appliance to a new spot in the room or the house.
  • Replacing an older appliance with one that needs more gas than the current line can supply.
  • Replacing an old, kinked or damaged connector that shouldn't stay in service.

If you already have a gas fireplace that lights poorly or won't stay lit, the line may not be the problem. Our gas fireplace service checks the appliance first, so you don't pay to run new pipe that doesn't fix the issue.

What the visit involves, step by step

How we install a gas line

  1. Look at the appliance and where it will go

    We confirm what the line will feed, using the appliance's gas requirements and its planned position.

  2. Trace the existing supply

    We find where the new line can tie into your current gas piping and work out a practical route to the appliance.

  3. Size the line

    We choose the pipe size based on how much gas the appliance needs and how far the gas has to travel.

  4. Run the pipe and add a shutoff

    We install the line and put an accessible shutoff valve near the appliance, so its gas can be turned off without shutting off the whole house.

  5. Pressure and leak test

    We test the new piping and connections for leaks before the appliance is put into use.

  6. Connect and check the appliance

    We make the final connection, light the appliance and check that the flame looks right.

Pipe and connection materials

Residential gas lines are usually rigid steel (black iron) pipe, flexible corrugated stainless steel tubing (CSST), or a mix of the two. A short approved connector often makes the last link to the appliance. Which one fits your home depends on the route, the distance and how the existing piping is set up. We'll explain what we plan to use and why before the work starts.

Safety and upkeep after installation

A gas line that is sized correctly, tested and has its own shutoff should need very little attention day to day. A few habits help keep it that way:

Good habits around a gas appliance

  • Know where the shutoff valve for the fireplace or appliance is.
  • Keep the area around the valve and connector clear so it can be reached.
  • Don't let anything heavy rest on or crush the line or connector.
  • Have the gas appliance serviced on a regular schedule.
  • Treat a gas smell as an emergency, not something to investigate yourself.

Booking a gas line installation

Get in touch and tell us what the line will feed and where it will go. We work on all major brands of gas fireplaces and appliances, and we also take commercial and property-manager jobs.

Gas Line Installation: common questions

Can you install the gas line and the gas fireplace on the same job?

Yes. When we install a gas fireplace, insert or gas logs, we plan the supply line with the appliance, so the pipe size and the shutoff location match the unit you're putting in.

Do I need a new gas line if my fireplace already has gas?

Sometimes. An existing line may work fine, but a new line may be needed if the new appliance requires more gas than the current pipe can supply, if the appliance is moving, or if the old connector is damaged.

Why does the size of the gas line matter?

The pipe has to carry enough gas for the appliance over the distance it runs. A line that is too small can leave the flame weak or uneven even when the appliance is working properly.

Do you take emergency calls, including nights and weekends?

Yes, emergency calls are accepted, and 24-hour service runs Sunday through Friday. If you smell gas, leave the building first and call the gas utility or 911 from outside before calling anyone else.

Do you install gas lines for rental or commercial properties?

Yes. Commercial and property-manager work is offered, and we can plan the gas line around the appliances in each unit or space.

How do I get an estimate for a gas line?

Call or request an estimate. Estimates are free. It helps to tell us what appliance the line will feed and roughly where it will go.

Free Estimates

Talk to us about gas line installation

Tell us about the project: the space, what’s there now and what you’d like. We’ll explain the options before anything is booked.