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Ask the expert: drainback vs. glycol.

Publication: PM Engineer
Publication Date: 01-APR-09
Format: Online
Delivery: Immediate Online Access
Full Article Title: Ask the expert: drainback vs. glycol.(Letters)(Letter to the editor)

Article Excerpt
Overall, I see a solar drainback system as being superior to a glycol system. Yet it seems a lot of installers prefer glycol systems. I wonder if John Siegenthaler, Solar Design Notebook columnist, can give me his opinion on why that is?

Steve of Shelter Products Northwest

Roseburg, OR...



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