Question about Rinnai Desa Vent-Free Infrared Gas Heater: Vent-Free Infrared Gas Heater(18,000 BTU)

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Rinnai water heater is not keeping the water hot

Our water heater will heat up the water then after a few moments it will go cold for a few seconds then hot then cold. It makes for a very uncomfortable shower.

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How much water pressure do you have, it should be between 65 and 75 to work properly if it is lower or if it pulsates like thru a well system, then you will experiance this,

Posted on Jun 29, 2009

  • gary miller
    gary miller Jun 29, 2009

    how much water pressure do you have, it should be between 65 and 75 to work properly if it is lower or if it pulsates like thru a well system, then you will experiance this,

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SOURCE: Rinnai R53 Natural Gas Tankless Water Heaters

now to me this would result form not enough water going into the system. do you have a seprate unit on the bottem to take off and clean?

Posted on Mar 31, 2008

6ya6ya
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Posted on Jan 02, 2017

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