Glycol in Solar Hot Water Systems

Why do so many folks use glycol in solar hot water systems? What are the advantages and disadvantages of using glycol for solar thermal? And how do pressurized glycol systems compare with non-pressurized “drain back” systems?

In the following video mini-series, I address these questions and more.

Limitations of Glycol Solar Water Heating Systems (Part I)

Limitations of Glycol Solar Water Heating Systems (Part II)

Limitations of Glycol Solar Water Heating Systems (Part III)

Further Design Pitfalls in Glycol Solar Hot Water Systems

Design Advantages of Drainback Solar Hot Water Systems

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Dr. Ben