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Cost to run a central air conditioner in South Carolina
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$0.55/hour
Central Air Conditioner at 3,500 W in South Carolina (15.76¢/kWh) · $134.15/month at 8 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.55 | $16.77 | $201.33 |
| 2 h/day | $1.10 | $33.54 | $402.67 |
| 4 h/day | $2.21 | $67.07 | $805.34 |
| 8 h/day | $4.41 | $134.15 | $1,610.67 |
| 12 h/day | $6.62 | $201.22 | $2,416.01 |
| 24 h/day | $13.24 | $402.45 | $4,832.02 |
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 |
|---|---|---|
| South Carolina | 15.76 | $134.15 |
| South Dakota | 15.15 | $128.96 |
| Kansas | 15.47 | $131.68 |
| Montana | 15.57 | $132.53 |
| Georgia | 15.90 | $135.34 |
| Texas | 15.91 | $135.43 |
| Oregon | 15.92 | $135.51 |
FAQ
How much does it cost to run a central air conditioner in South Carolina?
At 3,500 W and 15.76¢/kWh: $0.55 per hour, $4.41 per day and $134.15 per month at 8 h/day.
How does South 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 South Carolina
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