A complete desktop computer setup, including speakers, a printer and an Internet modem, uses an average of 200 watts per hour; of this, the speakers use 20 watts an hour, the modem 10 watts and the printer 5 watts. Laptops, by comparison, use between 50 and 100 watts an hour.
Running a computer for 8 hours a day uses about 50 kilowatts a month, which is 600 kilowatts a year. Laptops use one-quarter to one-third of this amount of electricity. Placing a computer in stand-by or sleep mode drops electricity use to about one-third of active use. Leaving a computer running 24 hours a day would use 144 kilowatts a month, or 1,728 kilowatts per year.Learn More
According to the U.S. Department of Energy, typical humidifiers use 785 watts of electricity. Costs to run household appliances vary depending on a number of factors. Older appliances generally cost more to operate due to energy-efficient features added to later models.Full Answer >
A chest freezer uses an average of 200 watts per hour. Older standalone freezers use considerably more energy than newer models. The average cost per month is $14.60, with a yearly cost of approximately $175.Full Answer >
The amount of electricity consumed by a TV on standby or while operating depends on the technology involved; rear projection TVs can use between 0.2 and about 48 watts per hour with an average between 6 and 7. CRT (cathode ray tube) technology uses less, with a high of about 16, low close to zero and average of approximately 3 watts per hour.Full Answer >
A typical ceiling fan uses 60 to 75 watts of energy per hour even when running on high. This makes ceiling fans a very efficient alternative to a typical central air conditioning unit, which uses 3,500 watts.Full Answer >