Cost to Run a Central Air Conditioner in Maryland
Maryland's average residential electricity rate is 21.4¢/kWh as of July 2026 — the 37th cheapest in the country, 17% above the U.S. average. At typical usage (8 hours/day), a central air conditioner here costs $182 per month.
Per hour
$0.75
at 2,000–5,000 W
Per day
$5.99
8 hours/day
Per month
$182
851 kWh
Per year
$2,187
10,220 kWh
By usage level in Maryland
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $3.00 | $91.08 | $1,094 |
| Typical (8 hrs/day) | $5.99 | $182 | $2,187 |
| Heavy (16 hrs/day) | $11.98 | $364 | $4,374 |
Maryland vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a central air conditioner in Maryland?
At Maryland's current average residential rate of 21.4¢/kWh (July 2026), a central air conditioner with typical usage costs about $5.99 per day, $182 per month, or $2,187 per year.
Is running a central air conditioner in Maryland more expensive than average?
Yes. Maryland's electricity costs about 17% more than the U.S. average, so the same usage costs $182 per month here versus $156 nationally.
What does electricity cost in Maryland right now?
Maryland residents pay an average of 21.4¢ per kWh as of July 2026 — the 37th cheapest rate of the 51 U.S. jurisdictions we track.