How Much Does a Window Air Conditioner Cost to Run?
A 1200W window AC running 10 hours a day for 30 days at $0.15/kWh costs about $5.40 per month.
How to use this tool
- Enter power, hours per day, number of days and electricity rate in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your total cost and the full breakdown beneath it.
Window AC units are among the biggest summer electricity users — find out what yours costs to run.
Frequently asked questions
- How do I calculate electricity cost?
- Multiply the appliance wattage by hours used per day and number of days, divide by 1000 to get kWh, then multiply by your electricity rate per kWh.