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Cost to run a central air conditioner in North Carolina
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$0.52/hour
Central Air Conditioner at 3,500 W in North Carolina (14.95¢/kWh) · $127.25/month at 8 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.52 | $15.91 | $190.99 |
| 2 h/day | $1.05 | $31.81 | $381.97 |
| 4 h/day | $2.09 | $63.63 | $763.94 |
| 8 h/day | $4.19 | $127.25 | $1,527.89 |
| 12 h/day | $6.28 | $190.88 | $2,291.84 |
| 24 h/day | $12.56 | $381.76 | $4,583.67 |
A 3-ton central AC typically draws 3,000-4,000 W while running; SEER rating and duct losses matter.
Same appliance, nearby states
| State | ¢/kWh | Per month |
|---|---|---|
| North Carolina | 14.95 | $127.25 |
| Wyoming | 14.43 | $122.83 |
| Washington | 14.63 | $124.53 |
| Oklahoma | 14.82 | $126.15 |
| Florida | 14.99 | $127.59 |
| Arizona | 15.05 | $128.11 |
| South Dakota | 15.15 | $128.96 |
FAQ
How much does it cost to run a central air conditioner in North Carolina?
At 3,500 W and 14.95¢/kWh: $0.52 per hour, $4.19 per day and $127.25 per month at 8 h/day.
How does North Carolina compare with other states?
The same use costs $108.27/month in Nevada (cheapest) and $401.60/month in Hawaii (most expensive); the US average is $154.58.
Price: EIA Electric Power Monthly, Table 5.6.A (residential, August 2026 preliminary; released October 23, 2026).
Central Air Conditioner cost calculator · Electricity cost in North Carolina
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