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.

Plastic lined indirect water heater

STEAM DOCTOR Member Posts: 1,485
Hi. Any thoughts. Run to them, run away??? Seems to good to be true 


  • jad3675
    jad3675 Member Posts: 114
    I asked that question a few months ago...

    FWIW, I went for a TurboMax for my DHW needs.

  • ethicalpaul
    ethicalpaul Member Posts: 3,739
    The Rheem Marathon is a completely plastic tank resistive electric water heater. I ran toward it. Does an indirect tank have different requirements than a resistive water heater? (honest question--I have no idea)
    1 pipe Peerless 63-03L in Cedar Grove, NJ, coal > oil > NG
  • mattmia2
    mattmia2 Member Posts: 5,539
    Plastic lined or plastic tanks? i would have concerns with leakage with a tank that was just lined steel.
  • kcopp
    kcopp Member Posts: 3,990
    Amtrol Boilermate is the original indirect water heater.... design has been around for 40+ years. Its plastic lined.
    SuperTechrick in Alaska
  • Larry Weingarten
    Larry Weingarten Member Posts: 2,549
    Hi @mattmia2 , The Marathon is a fiberglass tank with a polybutylene liner last I knew. Originally, it was an independent company, but Rheem acquired it, so there is a good chance its lifetime warranty will be honored. ;)

    Yours, Larry