Question: how much does it cost to run a 12000 btu portable air conditioner?
Answer: A window air conditioner with a cooling output of 12,000 BTU uses approximately 15 amps from a 125 volt outlet. This translates to approximately 1.8 kWh. At the end of a month, one window air conditioner will cost about $35.60. Remember, that's only for one room.