Prepping your house for vacation is a great way to save energy. One way to do this is to set back or turn off the AC unit. The energy required to cool a building to a comfortable temperature is roughly equal to the energy saved as the building drops to the lower temperature.
Another way to save energy while you are away from home is to set your water heater to the ‘vacation’ mode. If you don’t have this setting, turn the temperature setting as low as possible, but don’t turn it completely off.
Before you head out the door, check the refrigerator to see that there is no food that will spoil and raise the temperature to 38 degrees.
Also, unplug equipment that doesn’t need to stay on, such as computers and TVs.
When you return, remember to increase the temperature slowly to avoid spiking usage.