Portable AC Electricity Cost in Illinois — $47.12/month (2026)
Illinois monthly
$47.12
U.S. average monthly
$51.78
Difference
-$4.66
← Portable AC (all states) · Illinois electricity rate
Quick rate
Daily cost
$1.57
Monthly cost
$47.12
+$0.00 vs typical
Yearly cost
$573.25
kWh / month
288.0 kWh
Local monthly estimate: $47.12 · U.S. average equivalent: $51.78
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ad-after-calculator Quick answer
Running a typical portable ac in Illinois costs about $1.57/day or $47.12/month at roughly $0.164/kWh, assuming 8 hours of use per day at 1200 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: $47.12
U.S. average rate
$0.180/kWh
Monthly estimate: $51.78
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ad-after-state-table FAQ
- Most portable ac units fall between 800 W and 2000 W, with 1200 W as a typical value for estimates.
- Our calculator uses 1200 W as the typical wattage, within a reported range of 800–2000 W.
- At 8 hours/day and 1200 W, the estimate is about 9.60 kWh per day.
- Using 8 hours/day, the estimate is about 288.0 kWh per month.
- Per hour, portable ac uses about 1.200 kWh (at 1200 W).
- At typical use (1200 W and 8 hours/day), the estimate is about $1.57/day at roughly $0.164/kWh.
- At typical use (1200 W and 8 hours/day), the estimate is about $47.12/month at roughly $0.164/kWh.
- Running for one hour at 1200 W costs about $0.196 per hour (using the Illinois rate of about $0.164/kWh).
- For typical use, the calculator estimates about $47.12/month for portable ac in Illinois.
- At the typical Illinois residential rate, the estimate is about 288.0 kWh per month, which corresponds to roughly $47.12/month for portable ac.
- Compared to the U.S. average, Illinois is about 9% lower for this estimate. Monthly cost is about $47.12 in Illinois vs $51.78 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)