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Cost to run a central air conditioner in Massachusetts
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$1.07/hour
Central Air Conditioner at 3,500 W in Massachusetts (30.48¢/kWh) · $259.45/month at 8 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $1.07 | $32.43 | $389.38 |
| 2 h/day | $2.13 | $64.86 | $778.76 |
| 4 h/day | $4.27 | $129.72 | $1,557.53 |
| 8 h/day | $8.53 | $259.45 | $3,115.06 |
| 12 h/day | $12.80 | $389.17 | $4,672.58 |
| 24 h/day | $25.60 | $778.34 | $9,345.17 |
A 3-ton central AC typically draws 3,000-4,000 W while running; SEER rating and duct losses matter.
Same appliance, nearby states
| State | ¢/kWh | Per month |
|---|---|---|
| Massachusetts | 30.48 | $259.45 |
| New York | 28.65 | $243.87 |
| Alaska | 29.41 | $250.34 |
| California | 29.75 | $253.23 |
| Maine | 32.11 | $273.32 |
| Hawaii | 47.18 | $401.60 |
FAQ
How much does it cost to run a central air conditioner in Massachusetts?
At 3,500 W and 30.48¢/kWh: $1.07 per hour, $8.53 per day and $259.45 per month at 8 h/day.
How does Massachusetts compare with other states?
The same use costs $108.27/month in Nevada (cheapest) and $401.60/month in Hawaii (most expensive); the US average is $154.58.
Price: EIA Electric Power Monthly, Table 5.6.A (residential, August 2026 preliminary; released October 23, 2026).
Central Air Conditioner cost calculator · Electricity cost in Massachusetts
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