Turn down your water heater.

What happens if you turn your shower on hot only? Does it burn you? Then the water is too hot. Do you use it all the way on hot for dishes? Most people don't. Consider turning down the temperature on your water heater. This device keeps a large tank of water available at your preferred temperature every minute of the day. In recent decades, small water heating devices have begun to be installed at the faucet to only heat the water you want when you ask for it.