residual air
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Hot Water Recirculation Pump Much Louder after Pipe Repair
A pinhole leak had developed in the copper pipe that's circled in red in the attached photo. A plumber came out and made the repair. However, that night, I noticed that our (four-year-old) Grundfos UP 15-29 SU recirculation pump was operating much more loudly than usual -- we could even hear...- Poseidon
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- air in the lines grundfos hot water recirculation hot water recirculation line issue recirculation pump residual air
- Replies: 2
- Forum: General Plumbing Help