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 Recirculation line
Author: meganthomas320 (KS)

We just had a tankless water heater installed. We have a dedicated recirculation line. Two of our bathrooms go cold when someone turns on a small faucet. Tonight I noticed the third copper pipe following the hot and cold lines (thought it was the recirculating line) just ends and is not hooked into anything and is open (no cap on the end). We believe both the bathrooms that go cold easily are connected on the same line. If the recirculating line is not connected to these bathrooms can that be a cause for them to get cold easily?

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 Re: Recirculation line
Author: packy (MA)

answer to your question is no.
but we would need pictures of the new heater and the piping around it to even venture a guess what is wrong.

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