3 Responses to “Limitations of Glycol Solar Water Heating Systems (Part I)”


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  1. Solar power is a very good alternative for electricity when you want to save up electric bills. It is also very practical to use renewable energy to things that we essentially need like heating hot water. I wish you could do more! T- up!

  2. First, let me thank you for the wealth of information you made available. It has been incredibly useful.

    In this video you say the Glycol systems must be under pressure. Why is that?

    Thanks, -john-

    • Dr. Ben


      Glycol systems degrade rapidly in the presence of air and at high temperature. To keep the air out, the system must be pressurized, with all the paraphernalia that entails – air vents, expansion tank, check valve, etc.

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