I agree -- we installed a hot water recirculating pump as well. Ours is a Grundfos -- I believe they also manufacture the Watts unit.
Most of these pumps will support 2 mixing valves, so I put one under the kitchen sink and another in the Master bath. Now both areas have hot water within approximately 10-15 seconds. Prior to that, the wait was 30-45 seconds.
I wound up installing the system myself -- not really a big deal if you like working on household projects.
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