www.pmmag.com/articles/86565-grundfos-comfort-series
Grundfos Comfort Series
April 30, 2002
Grundfos Pumps Corp. introduces its Comfort Series Instant Hot Water System, a retrofitted hot water recirculation (HWR) system, which will provide instant hot water and water savings for existing homes. It is an "under-the-sink" HWR product that requires only a single pump installed at the water heater, and doesn't require a return line.
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