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Desuperheating for DHW

I see a product from Olive Tree Energy called a ZeroEnergy Water Heating System. Any experience with these or similar products. Is it a good concept? Maybe one of these added to an indirect tank and electric backup so you can turn the boiler off for the summer.


  • Zman
    Zman Member Posts: 7,569
    The concept is great. It is proven and largely underutilized technology.
    I am not sure I am sold on Olive Tree's insistence that a thermosyphon is better that pumps and controls.

    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • jumper
    jumper Member Posts: 2,259
    Worked well as DHW preheater before code requiring double wall. When that requirement came in desuperheater-heater became more expensive and produced lower temperature.

    Presumably code requirement won't apply to CO2 refrigerant?