now you can do remotely toonch the nest is a learning thermostat it actually learns your living patterns. and auto adjust the temperature based on when you are generally home during the day or away for a weekend. my living pattern is like a warm shower in the morning. that s going to cost me money though. water heaters definitely can cost anywhere from 100 to $400 a year on your electricity bill. manufacturers typically set the water heating temperature at 140 degrees fahrenheit. although most homes only require it to be 120 degrees fahrenheit. that doesn t seem like a big difference but for every 10 degrees that you you lower that therm stated on the water heater. you are going to save an average of 12 to $30 a year. when you go away for a three day weekend. make sure you turn it off to really maximize the savings. quicker shower. exactly. or otake a cold shower during the summer and then you you will save on that. just shower in hotels. there you go. big money saver.