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Posted by HeatPro on January 30, 2007 at 12:05:53:
In Reply to: Grundfos Comfort Series Instant Hot Water System posted by Peter on January 30, 2007 at 11:14:13:
Such a system causes no difficulties, only pluses for quick hot water, and losses can be prevented by good pipe insulation. There is a check valve in the line to prevent cold water backflow.