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supply line

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• Mute

Bob_115 Member Posts: 47

February 2025 in Domestic Hot Water

will a 3/8 copper line supply enough gas for a 120000 btu tankless water heater?

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Comments

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  pecmsg Member Posts: 7,024

  February 2025

  what gas?

  What pressure?

  How many bends?

  

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  mattmia2 Member Posts: 16,462

  February 2025 edited February 2025

  Propane maybe depending on the answers to @pecmsg 's questions , methane, no.

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  yellowdog Member Posts: 293

  February 2025

  Absolutely not at 11" for propane. 1/2" copper wouldn't even do it at any length.

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  Bob_115 Member Posts: 47

  February 8

  Thanks for responding.

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  Larry Weingarten Member Posts: 4,067

  February 8

  Hi, What size gas pipe does the tankless manufacturer ask for? 🤔

  Yours, Larry

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  mattmia2 Member Posts: 16,462

  February 8

  https://forum.heatinghelp.com/discussion/comment/1840933#Comment_1840933

  3/8 acr will do it with lpg for about 30' at 2 psig so we need more information like @pecmsg 's questions.

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