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Old 12-30-13, 06:10 PM   #7
NiHaoMike
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The amount of cold water sitting in the lines is the same regardless of the temperature in the tank.
Also, if you plumbed the unit into the hot and cold lines under the bathroom sink, it can also operate as a hot water recirculation setup. For those in cooling dominated climates, the summer efficiency gain from having the unit also operate as an air conditioner outweighs the loss during the winter. (And even then, if dehumidification is needed during the winter, it can still be a net gain.)
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