How do you know which elettronic appliances impacts more heavily on your elettricity bill? For example a pc, airfryer, rice cooker, air con.

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You can look at the wattage. Electricity is measured in kWh, which stands for kilowatt hours. A kWh is defined as the electricity used by a device drawing a kilowatt of power, running for an hour.

Check out the wattage of your appliances, then determine how long you ran them for.

Of those, it’s certainly the air conditioner.

Nearly every appliance has a plate on it somewhere that tells you how much power they use in watts and or amps.

Simplified, Watts = amps x volts and Amps = watts / volts if you need to convert. In the US, volts is nearly always 120. For some very large appliances, it is sometimes 240. This will usually be electric heat, central a/c units (and some window units), electric ranges, dryers, welders, hot tubs, etc.

Larger numbers for either watts or amps = more power. For example 1000 watts is more power than 500 watts.

Other than reading the plate on the appliance, it is possible to actually measure the amount of power a device is drawing. Devices that plug in in between the appliance and the receptacle, devices that are connected inside your electrical panel, or a basic multimeter could all be used to accurately measure the power being used.

As I did in the very first sentence, generalizations can also be used to infer which appliance draws the most power – this is based simply on knowledge of what these appliances use on average.

There are devices (my husband has one) that can measure how much electricity an appliance draws.

Look at wattage of your devices, for a PC not doing heavy tasks its 300-350 watts ie 0.3-0.35 kW

The rest will be more or less as rated.

Now multiply this number by number of hours used. You’ll get your unit electricity usage in kWh.

If you know the correct equations you can work it out by looking at the wattage of the appliance

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