Cost to Run a Humidifier in South Carolina
South Carolina's average residential electricity rate is 17.1¢/kWh as of April 2026 — the 29th cheapest in the country, 9% below the U.S. average. At typical usage (10 hours/day), a humidifier here costs $2.08 per month.
Per hour
0.7¢
at 20–300 W
Per day
6.8¢
10 hours/day
Per month
$2.08
12 kWh
Per year
$24.97
146 kWh
By usage level in South Carolina
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (5 hrs/day) | 3.4¢ | $1.04 | $12.48 |
| Typical (10 hrs/day) | 6.8¢ | $2.08 | $24.97 |
| Heavy (20 hrs/day) | $0.14 | $4.16 | $49.93 |
South Carolina vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a humidifier in South Carolina?
At South Carolina's current average residential rate of 17.1¢/kWh (April 2026), a humidifier with typical usage costs about 6.8¢ per day, $2.08 per month, or $24.97 per year.
Is running a humidifier in South Carolina more expensive than average?
No — it's cheaper. South Carolina's rate is about 9% below the U.S. average: $2.08 per month here versus $2.29 nationally.
What does electricity cost in South Carolina right now?
South Carolina residents pay an average of 17.1¢ per kWh as of April 2026 — the 29th cheapest rate of the 51 U.S. jurisdictions we track.