Cost to Run a Ductless Mini-Split in Illinois
Illinois's average residential electricity rate is 19.2¢/kWh as of July 2026 — the 35th cheapest in the country, 5% above the U.S. average. At typical usage (8 hours/day), a ductless mini-split here costs $37.36 per month.
Per hour
$0.15
at 400–2,000 W
Per day
$1.23
8 hours/day
Per month
$37.36
195 kWh
Per year
$449
2,336 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.61 | $18.68 | $224 |
| Typical (8 hrs/day) | $1.23 | $37.36 | $449 |
| Heavy (16 hrs/day) | $2.46 | $74.71 | $897 |
Illinois vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a ductless mini-split in Illinois?
At Illinois's current average residential rate of 19.2¢/kWh (July 2026), a ductless mini-split with typical usage costs about $1.23 per day, $37.36 per month, or $449 per year.
Is running a ductless mini-split in Illinois more expensive than average?
Yes. Illinois's electricity costs about 5% more than the U.S. average, so the same usage costs $37.36 per month here versus $35.60 nationally.
What does electricity cost in Illinois right now?
Illinois residents pay an average of 19.2¢ per kWh as of July 2026 — the 35th cheapest rate of the 51 U.S. jurisdictions we track.