Pressure or drainback? That’s probably the question I get asked more than any other: Should I choose the more popular pressure-glycol system, or go with a drainback system? Here’s the answer: It depends. Don’t you hate that kind of answer? Well, here’s a more specific answer: If the slope of the collectors and plumbing is […]
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Solar, radiant, and all that is sunny
A free database of system designs by solar expert Rod Hyat