Cost to Run a 900-watt air conditioner for 10 hours in New York
Running a 900-watt air conditioner for 10 hours uses 9 kWh and costs $2.25 at $0.25/kWh in New York. Do that every day and it adds up to $67.50 a month.
Calculate your own cost
- Per hour
- $0.2250.9 kWh
- Per day
- $2.259 kWh
- Per week
- $15.7563 kWh
- Per month (30 days)
- $67.50270 kWh
- Per year
- $821.253,285 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 900-watt air conditioner cost per hour?
At $0.25/kWh, it costs $0.225 per hour. The maths: 900 W ÷ 1,000 = 0.9 kWh per hour, × $0.25 = $0.225.
How much does it cost per month?
Used 10 hours a day for 30 days, it costs about $67.50 per month and uses 270 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
9 kWh per day, 270 kWh per month and 3,285 kWh per year at 10 hours a day. A kWh is one kilowatt (1,000 W) used for one hour. It is the unit on your electricity bill.
How can I lower the cost?
Set the thermostat to 78°F (26°C), clean the filter monthly and shade sunny windows. Check your bill for the exact rate and enter it above.
Does my electricity rate change the answer?
Yes, a lot. At 10¢ per kWh the monthly cost is $27.00 and at 30¢ it is $81.00. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use in New York
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.9 kWh | $0.225 | $6.75 | $82.13 |
| 2 hours | 1.8 kWh | $0.45 | $13.50 | $164.25 |
| 3 hours | 2.7 kWh | $0.675 | $20.25 | $246.38 |
| 4 hours | 3.6 kWh | $0.90 | $27.00 | $328.50 |
| 5 hours | 4.5 kWh | $1.13 | $33.75 | $410.63 |
| 6 hours | 5.4 kWh | $1.35 | $40.50 | $492.75 |
| 7 hours | 6.3 kWh | $1.58 | $47.25 | $574.88 |
| 8 hours | 7.2 kWh | $1.80 | $54.00 | $657.00 |
| 9 hours | 8.1 kWh | $2.03 | $60.75 | $739.13 |
| 10 hours | 9 kWh | $2.25 | $67.50 | $821.25 |
| 11 hours | 9.9 kWh | $2.48 | $74.25 | $903.38 |
| 12 hours | 10.8 kWh | $2.70 | $81.00 | $985.50 |
| 13 hours | 11.7 kWh | $2.93 | $87.75 | $1,067.63 |
| 14 hours | 12.6 kWh | $3.15 | $94.50 | $1,149.75 |
| 15 hours | 13.5 kWh | $3.38 | $101.25 | $1,231.88 |
| 16 hours | 14.4 kWh | $3.60 | $108.00 | $1,314.00 |
| 17 hours | 15.3 kWh | $3.83 | $114.75 | $1,396.13 |
| 18 hours | 16.2 kWh | $4.05 | $121.50 | $1,478.25 |
| 19 hours | 17.1 kWh | $4.28 | $128.25 | $1,560.38 |
| 20 hours | 18 kWh | $4.50 | $135.00 | $1,642.50 |
| 21 hours | 18.9 kWh | $4.73 | $141.75 | $1,724.63 |
| 22 hours | 19.8 kWh | $4.95 | $148.50 | $1,806.75 |
| 23 hours | 20.7 kWh | $5.18 | $155.25 | $1,888.88 |
| 24 hours | 21.6 kWh | $5.40 | $162.00 | $1,971.00 |
How we worked it out
- Energy per hour: 900 W ÷ 1,000 = 0.9 kWh
- Cost per hour: 0.9 kWh × $0.25 = $0.225
- Cost per day: × 10 hours = $2.25
- Month and year: × 30 days = $67.50, × 365 days = $821.25
New York electricity prices
New York pays about $0.25 per kWh, which is 43% higher than the US average of $0.175. The same air conditioner would cost $47.25 a month at the national average.
What it costs in different places
Same 900-watt air conditioner, 10 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $47.25 |
| California | $0.32 | $86.40 |
| Texas | $0.155 | $41.85 |
| New York | $0.25 | $67.50 |
| Florida | $0.155 | $41.85 |
| Illinois | $0.17 | $45.90 |
| Pennsylvania | $0.18 | $48.60 |
| Ohio | $0.17 | $45.90 |
| Washington | $0.115 | $31.05 |
About air conditioner running costs
Window and split air conditioners use a compressor that cycles on and off. Watts depend on size, from about 500 W for a small unit to 3,500 W for a large one.
Typical sizes: 500 W, 900 W, 1,200 W, 1,500 W, 2,000 W, 3,500 W.
How to spend less: Set the thermostat to 78°F (26°C), clean the filter monthly and shade sunny windows.
What this estimate assumes
- The appliance draws its full stated wattage the whole time it is on. Real units with a thermostat cycle off and cost less.
- Wattage is the typical label value, not a measured value. Check the label on your own appliance.
- The rate is an approximate residential average in New York. Your bill may include fixed fees, tiers or time-of-use pricing. Edit the rate above.
- A month is 30 days and a year is 365 days.