09/02/2026
A strange humming noise turned into a bigger plumbing issue 🔧
A customer called because they were hearing a loud humming noise from the basement, especially while using the washing machine or shower.
At first everything was quiet, so I started checking the system while they operated different fixtures upstairs.
During the inspection, I found the expansion tank was waterlogged and no longer functioning properly. Then the humming started—and I was able to trace the noise to the home’s pressure-reducing valve.
Next step: check the incoming water pressure.
The house pressure was roughly DOUBLE the recommended operating range.
I attempted to adjust the PRV, but it would no longer bring the pressure down where it needed to be.
The solution was replacing the failed expansion tank and PRV, then adjusting and verifying the home’s water pressure back within a normal operating range.
Sometimes the noise is only the symptom. Finding the cause is the important part. 🔧
Hearing unusual humming, banging or other noises from your plumbing? Don’t ignore it—excessive water pressure can put unnecessary stress on fixtures and components.
📍 Serving Douglasville & surrounding West Metro Atlanta communities.