Concerned about climate change? A home's hot water tank(s) is normally second (to heating and air conditioning) in a home's total energy consumption. How many of you leave your hot water tanks running all day and night? Gigantic waste of energy and expense if you do. Put timers on your hot water tanks and set them to run for only the times you generally use hot water. Keep in mind that even when off, a hot water tank, especially if well insulated, will keep its water hot for hours when not in much usage. Also, is your hot water too hot for your hands and body when you use it so that you have to mix it with some cold water? If yes, then lower your hot water tank's temperature. These are normally preset to 140 degrees. Turn it down to 120 degrees or less.
When you go on vacation or business trips, do you turn your hot water tanks off for the entire period that you are away? If not, what a waste of energy and money!! For electric hot water tanks, just turn off its circuit breaker when you are away, then turn it on when you return and change the time on the timer to the correct time (I usually leave myself a note to do that where I will see it when I return. Note - I am not familiar with gas hot water tanks so you may need to handle it differently.
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