Rinnai Tankless REU-V2520-EFU. Water isn't as warm as it used to be.

Discussion in 'Tankless Water Heater Forum' started by jimsinoregon, Feb 7, 2013.

  1. jimsinoregon

    jimsinoregon New Member

    Feb 7, 2013
    Rinnai Tankless REU-V2520-EFU. (4-6 years old) Water isn't as warm as it used to be. Any ideas what might be causing this? Any suggestions on how to remedy it?

    I did notice that the installer used a bathroom controller to control the unit, which limits the temperature to 120 degrees (instead of a master controller that allows temps up to 140 degrees.

    Thanks in advance,

  2. Master Plumber Mark

    Master Plumber Mark Master Plumber

    Feb 6, 2005
    Sensitivity trainer...to be caring and loving to a
    indianapolis indiana - land of the free, home of
    you probably need to have it de-scaled if it is not too late....

    have you ever had it done???

    it is supposed to be de-scaled at least once a year or it voids your warranty....
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