Product review (3 stars): its the poor GE engineering that ruins it
This did solve our GE frozen water line problem but due to the way it is connected (it only heats when the freezer is running/cooling) we had to turn the freezer up to 9 so its almost constantly running. I tried other connections on the mainboard that would power it 24/7 but it draws too much power assumingely, so that was a no go.

We'll see if the incremental electricity bill outweighs the cost of bottled water. Overall this device does what it is supposed to do, its the poor GE engineering that ruins it.