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Old 12-29-17, 11:12 AM   #14
Geo NR Gee
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Join Date: Jan 2011
Location: Seattle
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I went ahead and installed the device from the electric company. What I have observed is the following:

The first couple of weeks at around 4 to 5pm the water heater heat pump comes on and builds some extra heat in the tank. Then shuts off around 5pm and stays off until a little after 8pm. There is an indicator light that shows it is being controlled by the power company at the peak (I would assume) times when they want to control the electricity usage.

The water temperature coming out of the tank is definitely hotter as experienced when I took a shower at the time it is being controlled.

It looks like they are tweaking their program because I haven't heard the heat pump coming on and building extra heat now for the last few weeks during the peak times. Nor do I see the control light being activated.
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