Incandescent light bulbs use from 50 to 100 watts, while compact fluorescent light bulbs use between 11 and 30 watts. Ceiling fans use 100 watts, as do portable fans. Laptop computers can use 40 to 120 watts, while desktops generally use 80 to 120 watts.
For heavy computing, such as gaming, desktop computers can use 400 to 1,000 watts. Humidifiers can use anywhere from 300 watts to 1,000 watts. One-room air conditioner units typically use around 1,100 watts, while central air-conditioning units use approximately 5,000 watts. Ovens use 3,000 watts, while dishwashers and coffee machines use around 1,500 watts. Vacuum cleaners use approximately 500 watts. Modern televisions use anywhere from 120 to 300 watts depending on the size and type.