Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Buderus Quick-Mix Station Circulator Squealing

Steve_159 Member Posts: 1
The Quick-Mix Station circulator for the water heater zone was squealing. Turned it off. 5 minutes later, the circulator for 2nd floor circulator started squealing. I noticed the overflow valve is leaking, enough to fill a bucket over a week's time (this just started to get worse). Could there be air getting into the system from this leak? thanks


  • Erin Holohan Haskell
    Erin Holohan Haskell Member, Moderator, Administrator Posts: 2,185
    We had to re-post this discussion due to a system error. Thanks for your patience!