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<blockquote data-quote="Allen" data-source="post: 333501" data-attributes="member: 389">Ah, water.&nbsp; What a fun topic.It's not so straight forward as to look at a single constriction point, as in the faucet being 3/8 inch which is necked down the 3/4 or 1/2 inch water line.&nbsp; Friction is real and there's greater friction per volume forces acting on water supply the smaller you go in line size, there are also differences in friction depending on material of said line.&nbsp; So if you are running a really long distance you can get unsatisfactory water supply/pressure when using 1/2 inch pipe as distances increase, but at the same time...if your faucet is one of the less-than-awesome 2 gpm wonders, it does take longer to empty a 3/4 inch line than it does a 1/2 inch water line.&nbsp; The tipping point between time needed to exchange the volume in the 1/2 inch line vs the 3/4 inch line is probably nominal for most homes, but for very long runs (50+ ft) it may actually be several seconds.&nbsp; I have a pretty long run from my water heater to the master bath.&nbsp; If I need/want hot water quickly...I turn on both the shower and the sink.&nbsp; And ignore the $0.04 extra I just spent on water.&nbsp; Gotta choose your battles.</blockquote>

[QUOTE="Allen, post: 333501, member: 389"] Ah, water. What a fun topic. It's not so straight forward as to look at a single constriction point, as in the faucet being 3/8 inch which is necked down the 3/4 or 1/2 inch water line. Friction is real and there's greater friction per volume forces acting on water supply the smaller you go in line size, there are also differences in friction depending on material of said line. So if you are running a really long distance you can get unsatisfactory water supply/pressure when using 1/2 inch pipe as distances increase, but at the same time...if your faucet is one of the less-than-awesome 2 gpm wonders, it does take longer to empty a 3/4 inch line than it does a 1/2 inch water line. The tipping point between time needed to exchange the volume in the 1/2 inch line vs the 3/4 inch line is probably nominal for most homes, but for very long runs (50+ ft) it may actually be several seconds. I have a pretty long run from my water heater to the master bath. If I need/want hot water quickly...I turn on both the shower and the sink. And ignore the $0.04 extra I just spent on water. Gotta choose your battles. [/QUOTE]

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