What if I use the Closed Loop Heat Ex-changer?

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22-Jun-2014 05:01 PM

Al Rich

Posts: 16

This is a good total freeze protection option and System 5 qualifies for the US Federal 30% tax credits as well as state tax credits requiring OG-300. It is very likely that all SolarRoofs.com systems with OG100 collector certification will qualify for the federal credit as well. Food grade, propylene glycol antifreeze is needed with this heat ex-changer.
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