It’s not the whole drain pipe. It’s maybe 18”. Encourage you to google it. | Hacker News

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		jonstewart on Oct 28, 2022 \| parent \| context \| favorite \| on: DIY gadgets that could keep your energy bill down It’s not the whole drain pipe. It’s maybe 18”. Encourage you to google it.

zcw100 on Oct 28, 2022 [–]

Why exactly 18"? That's some specific installation. You can make it any length you want. I encourage you to not be so smug.

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