Asked on Jul 6, 2020

What size is residential gas service line?

Cynthia HCindyKmdreamer


What is the typical diameter for a residential natural gas service line, when using PE to replace black pipe? I'm in Oklahoma City, fwiw, and I believe my existing service pipe is 1". The meter also uses 1" pipe I believe.


13 answers
  • From what I've read, 3/4 inch.

  • Em
    on Jul 6, 2020

    In all cases, a near 200,000 BTU gas appliance will require a minimum of a ¾-inch gas supply line. In specific conditions a ½-inch gas line may be used.

    on Jul 6, 2020

    I’m not sure replacing gas lines is a handy person sort of job. Very dangerous.

  • Ken Erickson
    on Jul 6, 2020

    You need to hire a certified gas contractor. The natural gas company is probably responsible for the pipe between street and meter.

  • Oliva
    on Jul 6, 2020

    I agree with Frugal Times. I'd check with your gas supplier before proceeding, as they may prohibit work being done by a homeowner. You may also need to determine if a permit is required for work done by anyone other than the utility company. It's difficult to imagine this work would not necessitate an inspection/approval.

  • William
    on Jul 6, 2020

    You need a pro to replace the main line from the meter to the home. Your gas supplier can advise you. Also permits may be required as there would be a pressure leak test needed to pass code. This is really not a DIY project. Check with you gas supplier and building department.

  • Deb K
    on Jul 6, 2020

    Hello AidanGrano, I think the standard size is 1 inch to the meter and 3/4 inch inside the residence, hope this helps you

  • Mogie
    on Jul 6, 2020

    Please get someone that knows how to do this and has done this many times before. About a 100 miles away an entire apartment complex was leveled when someone was doing some "homemade improvements".

  • Tom Stuart
    on Jul 7, 2020

    For most DIY projects you can follow YouTube or Google instructions and do a pretty good job. Not with gas. If you make a mistake it can lead to disaster. I do practically all of my home repairs but not for gas.

    Call a qualified technician.

  • Kmdreamer
    on Jul 8, 2020

    You should call the gas company and make shure because you don’t want leaks or you could even google it for your town and area

  • Cindy
    on Jul 9, 2020

    Hi Aidan. I agree with the comments above. This is a job for a professional.

  • Cynthia H
    on Jul 10, 2020

    For legal and safety reasons, gas lines should only be worked on by a licensed contractor. Good luck and stay safe!

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