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A comment on Large-scale ‘sand battery’ goes online in Finland. Parent comment

Re:Large-scale ‘sand battery’ goes online in Finland by thedougd on Thursday July 07, 2022 @08:55AM (#32013461)
It's possible there's a faulty faucet mixing valve somewhere in the building causing hot water to mix into the cold line.
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Re:Large-scale ‘sand battery’ goes online in Finland by dwighttk on Thursday July 07, 2022 @12:16PM (#32015895)
The hot water from the cold tap reliably went away once the water started running which is what made me think that it was sitting still next to the hot water that caused it
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