Cost to Run a Window Air Conditioner in Maryland
Maryland's average residential electricity rate is 22.1¢/kWh as of April 2026 — the 39th cheapest in the country, 18% above the U.S. average. At typical usage (8 hours/day), a window air conditioner here costs $48.37 per month.
Per hour
$0.20
at 500–1,500 W
Per day
$1.59
8 hours/day
Per month
$48.37
219 kWh
Per year
$581
2,628 kWh
By usage level in Maryland
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.80 | $24.19 | $290 |
| Typical (8 hrs/day) | $1.59 | $48.37 | $581 |
| Heavy (16 hrs/day) | $3.18 | $96.74 | $1,162 |
Maryland vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a window air conditioner in Maryland?
At Maryland's current average residential rate of 22.1¢/kWh (April 2026), a window air conditioner with typical usage costs about $1.59 per day, $48.37 per month, or $581 per year.
Is running a window air conditioner in Maryland more expensive than average?
Yes. Maryland's electricity costs about 18% more than the U.S. average, so the same usage costs $48.37 per month here versus $41.15 nationally.
What does electricity cost in Maryland right now?
Maryland residents pay an average of 22.1¢ per kWh as of April 2026 — the 39th cheapest rate of the 51 U.S. jurisdictions we track.