There’s no doubt that a hot shower does wonders to sooth a person, especially after a long day of work or a night out in the cold. That being said, how much more relaxing is a 140 degree bath than a 120 degree one? By default most hot water heaters come from the manufacturer with a temperature setting of 140 degrees. This is partly to astound the customer when they feel how instantly warm the water is and also to eliminate the slight risk of passing on legionella bacteria. By turning down the water heater to 120° a homeowner can expect to save up to 10 percent on energy costs and reduce the risk of scalding.