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Gimmick.

Ever take a shower and think the water wasn’t warm enough, even though your significant other assures you it’s hot? And who doesn’t adjust the water temp during the shower? Having temperature presets is pointless. Your perception of the water’s temp depends on your body’s varying stasis.

Agreed. Adjusting the water temperature is nothing more than demonstrating this technology versus actual practicality. Adjusting the water temperature is always variable, this Product doesn't solve that.
 
But, hey, maybe they could integrate a sensor and turn the shower off after reaching temp if no ones in it after 10 seconds, they could make a call for helping save water.

From what I read elsewhere it does exactly that. It runs the water until it reaches the temp you specified, and then it "pauses" the water flow until you get in. I assume the "pause" is like many other shower heads where it still lets a tiny bit of water flow so you remember that it is on.

In my house this would be extremely helpful since the water heater is on the opposite side of the house, and the plumbing is run in an unfinished basement with the copper pipes exposed. It takes a good 4-5 minutes before we get hot water in my shower. I don't really worry about "wasting" water though because I live in the country with a well/septic system on an aquifer. My water is pretty much 100% recycled all the time, no such thing as "wasting" water. I suppose you could argue we "waste" a little bit of electricity running the well pump and water heater though.

Agreed. Adjusting the water temperature is nothing more than demonstrating this technology versus actual practicality. Adjusting the water temperature is always variable, this Product doesn't solve that.

The way I understand it, these fancy controllers continually adjust the valves to keep the water at your set temperature. So as long as you have enough hot water the temp will be where you set it, you don't sit there continually bumping up the temperature as the hot water starts to run low like you do on a manual valve, these do that for you.

Set the temp to 90° and the shower turns on and runs until the temp gets up to 90° and then pauses the water flow. You get in and it turns back on and you have 90° water hitting you the entire time you are in the shower until you get out, no need to touch the controller/valves/anything. This is opposed to turning the shower on all the way to hot, keep checking it every couple minutes by hand until you feel it get warm enough, get in and start soaping up and realize it is starting to get too hot so you turn the temp down, keep showering for a while and then realize the hot water is starting to run low so now you've got to turn the heat back up, etc. etc.
 
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