Cost to Run a Ductless Mini-Split in Illinois
Illinois's average residential electricity rate is 20.5¢/kWh as of April 2026 — the 36th cheapest in the country, 9% above the U.S. average. At typical usage (8 hours/day), a ductless mini-split here costs $39.88 per month.
Per hour
$0.16
at 400–2,000 W
Per day
$1.31
8 hours/day
Per month
$39.88
195 kWh
Per year
$479
2,336 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.66 | $19.94 | $239 |
| Typical (8 hrs/day) | $1.31 | $39.88 | $479 |
| Heavy (16 hrs/day) | $2.62 | $79.77 | $958 |
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 20.5¢/kWh (April 2026), a ductless mini-split with typical usage costs about $1.31 per day, $39.88 per month, or $479 per year.
Is running a ductless mini-split in Illinois more expensive than average?
Yes. Illinois's electricity costs about 9% more than the U.S. average, so the same usage costs $39.88 per month here versus $36.58 nationally.
What does electricity cost in Illinois right now?
Illinois residents pay an average of 20.5¢ per kWh as of April 2026 — the 36th cheapest rate of the 51 U.S. jurisdictions we track.