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Steam Boiler Rotting Away

jjk_08jjk_08 Member Posts: 1
Hello I have a steam boiler that was installed in 1998. While servicing it today I noticed the back wall of the block appears to be disintegrating. (SEE PICTURES). It is a natural gas Peerless steam boiler. I don’t see any type of unusual flame shape hitting that area back there. Any thoughts on what may have caused this?


  • HVACNUTHVACNUT Member Posts: 3,265
    Looks like it's leaking between at least 2 sections.
  • mikeg2015mikeg2015 Member Posts: 1,178
    Those are good boilers And it’s only 20 years old.

    Dry fired? Or really bad water quality and lots of makeup water.
  • JohnNYJohnNY Member Posts: 2,432
    That’s been happening for a while. You’ll have to start thinking about replacement, unfortunately.
    For installations, troubleshooting, and private consulting services, find John "JohnNY" Cataneo here at :
    "72°F Mechanical, LLC"
    Or email John at [email protected]
    John is the Boilers and Hydronic Heating Systems Course Instructor at NYC's Mechanics Institute, a professional Master Plumber, licensed by The Department of Buildings of The City of New York, and works extensively in NYC while consulting for clients in and out of state.
    John also oversees mechanical installations and maintenance for metro-area clients with his family's company, Gateway Plumbing and Heating along with his brother/business partner.

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