Frequently Asked Questions

How do I save money using WattDoesItUse?

WattDoesItUse provides multiple ways to save money: Discover the power consumption of your current electronics and adjust your use of them to save energy and money on your electricity bill. Find the most energy efficient device when buying a new one, which will save on your electricity bill. Find the total amount of standby power being used by your devices and unplug them to save energy when they aren’t being used.

How do I find the model number on my device?

The model number for your device can typically be found either underneath or behind the device. It will usually be next to a UPC code. The model number is different from the serial number though. The serial number is used for identifying the specific device, not the model line that it is associated with.

Here is a picture of a model number for reference:

Find the model number for your device

What impacts power consumption for a device?

There are many factors that impact the power consumption for a device. Below are some examples of configurations/settings that can impact the power consumption of a device:

  • Refrigerators
    • The more food you have in the refrigerator the less power it uses, as it has less empty space to cool. If you don’t have enough food, put pitchers of water in the fridge. This will provide cold water and reduce the empty space that needs to be cooled.
    • The temperature setting will impact how much energy is used.
    • The number of times the door is opened will impact the power consumption, as it will need to re-cool after losing some of the cold air.
  • Televisions
    • Brightness of the television will increase the power consumption.
    • Advanced features can sometimes require more power. Make sure you read up on the benefits of the advanced features before enabling them and try measuring the power consumption before using them 100% of the time.
  • Computers
    • The number of programs you run can impact your power consumption, depending on how many resources (CPU, RAM, etc) they are using. The more resources, the more power.
    • The brightness of your screen will increase the power consumption
    • Using wireless internet vs ethernet or not being on internet will impact power consumption.