Freezing Pipes or Pipes frozen could the Instant Hot Water Recirculator from RedyTemp work

Since the RedyTemp Instant Hot Water Recirculator has temperature adjustment capability using the adjustment knob on the front of the instant hot water recirculator at www.redytemp.com By setting the temperature to the lowest setting which would keep the water in the pipes at barely warm temperature on the hot water recirculator, wouldn't this be enough to stop the pipes freezing up during the cold seasons and save water from dripping down the drain all night.
I've heard of pipe heating tape which uses electric to heat the pipes so they don't freeze... wouldn't the circulation of water throughout the system be more energy efficient compared to the electrical energy which the tape is consuming?
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It may or may not. It will not run the water to any part of the pipe beyond the return valve. It also appears it would heat your cold water so instead of have hot and cold, you would end up with warm and warm, until it cleared.
It does not look like a product I would want. BTW the claim it does not use electricity to heat water is at best a misrepresentation for those with electric water heaters.
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Joseph E. Meehan

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