Question: how much power does a portable air conditioner use?
Answer: Converting Energy to Cents Converting BTUs to kilowatt-hours, a measurement equal to one kilowatt of power consumption per hour, you'll find that a 7,500-BTU PAC consumes about 2.2 kWh, a 10,000-BTU unit 2.9 kWh, and a 14,000-BTU unit 4.1 kWh.