Mini split AC Electricity Cost in Illinois — $58.90/month (2026)
Illinois monthly
$58.90
U.S. average monthly
$64.72
Difference
-$5.82
← Mini split AC (all states) · Illinois electricity rate
Quick rate
Daily cost
$1.96
Monthly cost
$58.90
+$0.00 vs typical
Yearly cost
$716.57
kWh / month
360.0 kWh
Local monthly estimate: $58.90 · U.S. average equivalent: $64.72
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ad-after-calculator Quick answer
Running a typical mini split ac in Illinois costs about $1.96/day or $58.90/month at roughly $0.164/kWh, assuming 8 hours of use per day at 1500 W. The U.S. average rate is about $0.180/kWh, so Illinois is roughly 9% lower than average for this estimate.
vs U.S. average
Local rate (Illinois)
$0.164/kWh
Monthly estimate: $58.90
U.S. average rate
$0.180/kWh
Monthly estimate: $64.72
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ad-after-state-table FAQ
- Most mini split ac units fall between 800 W and 3000 W, with 1500 W as a typical value for estimates.
- Our calculator uses 1500 W as the typical wattage, within a reported range of 800–3000 W.
- At 8 hours/day and 1500 W, the estimate is about 12.00 kWh per day.
- Using 8 hours/day, the estimate is about 360.0 kWh per month.
- Per hour, mini split ac uses about 1.500 kWh (at 1500 W).
- At typical use (1500 W and 8 hours/day), the estimate is about $1.96/day at roughly $0.164/kWh.
- At typical use (1500 W and 8 hours/day), the estimate is about $58.90/month at roughly $0.164/kWh.
- Running for one hour at 1500 W costs about $0.245 per hour (using the Illinois rate of about $0.164/kWh).
- For typical use, the calculator estimates about $58.90/month for mini split ac in Illinois.
- At the typical Illinois residential rate, the estimate is about 360.0 kWh per month, which corresponds to roughly $58.90/month for mini split ac.
- Compared to the U.S. average, Illinois is about 9% lower for this estimate. Monthly cost is about $58.90 in Illinois vs $64.72 at the national average.
- Start with practical steps from our tips list (e.g., Seal air leaks and improve insulation to reduce run-time.). Smaller changes reduce kWh usage, which reduces the bill at your local rate.
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Est. monthly at Illinois rate ($0.164/kWh)