Air Conditioner Running Cost Calculator
Fill in the values and the answer updates as you type.
How the Air Conditioner Running Cost Calculator works
Power draw (W) = cooling capacity ÷ EER. Monthly energy = draw × hours × days × duty cycle. The duty cycle is the share of time the compressor actually runs; it is lower for inverter models and mild weather. Example: with the default values, monthly cost comes to $30.24.
Inputs and results
The Air Conditioner Running Cost Calculator takes 6 inputs and gives 4 results.
What you enter
- Cooling capacity (BTU/h) — starts at 12000.
- Efficiency (EER) (BTU/h per W) — starts at 10.
- Hours per day (h) — starts at 8.
- Days per month — starts at 30.
- Compressor duty cycle (%) — starts at 70.
- Electricity price ($/kWh) — starts at 0.15.
What you get
- Monthly cost
- Monthly energy (kWh)
- Power while running (W)
- Cost per running hour
Example: Air Conditioner Running Cost Calculator with the starting values
With cooling capacity 12000 BTU/h, efficiency (eer) 10 BTU/h per W, hours per day 8 h, days per month 30 and compressor duty cycle 70 %, the calculator returns:
| Monthly cost | $30.24 |
|---|---|
| Monthly energy (kWh) | 202 |
| Power while running (W) | 1,200 |
| Cost per running hour | $0.18 |
Change any value above and the results update straight away.
Air Conditioner Running Cost Calculator FAQ
How do I use the Air Conditioner Running Cost Calculator?
Enter cooling capacity, efficiency (eer), hours per day and days per month in the fields, then read monthly cost, monthly energy (kwh), power while running (w) and cost per running hour in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Air Conditioner Running Cost Calculator calculate?
Monthly electricity cost of running an air conditioner. It returns monthly cost, monthly energy (kwh), power while running (w) and cost per running hour from the 6 values you provide.
What values does the Air Conditioner Running Cost Calculator start with?
It opens with cooling capacity 12000 BTU/h, efficiency (eer) 10 BTU/h per W, hours per day 8 h and days per month 30 so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Air Conditioner Running Cost Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Air Conditioner Running Cost Calculator for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.