userbinator parent
It's supposed to be HOT water, not lukewarm... I have my water heater set to 150F because it makes the hot water last longer, especially in the winter when the incoming supply is barely above freezing, but that doesn't make the tank bigger.
I think what this "smart tank" does is mix the super-hot with cold.
If the automatic mixing feature malfunctions to super-hot, then it could be risky...