Awasome How Much Electricity Does Air Conditioner Use References. One 10,000 btu air conditioner may use 900 watts of electricity while another one uses 1,000 watts. How much electricity does a ac use in a day?

The average central air conditioner uses between 3000 and 3500 watts per hour during the warm month. The total watts all depends on how energy efficient the manufacturer made. In one hour the black & decker portable air conditioner uses 1,16 kwh of electricity.