Swamp cooler (evaporative) Electricity Cost in Massachusetts — $29.91/month (2026)
Massachusetts monthly
$29.91
U.S. average monthly
$17.26
Difference
+$12.65
← Swamp cooler (evaporative) (all states) · Massachusetts electricity rate
Quick rate
Daily cost
$1.00
Monthly cost
$29.91
+$0.00 vs typical
Yearly cost
$363.95
kWh / month
96.0 kWh
Local monthly estimate: $29.91 · U.S. average equivalent: $17.26
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ad-after-calculator Quick answer
Running a typical swamp cooler (evaporative) in Massachusetts costs about $1.00/day or $29.91/month at roughly $0.312/kWh, assuming 8 hours of use per day at 400 W. The U.S. average rate is about $0.180/kWh, so Massachusetts is roughly 73% higher than average for this estimate.
vs U.S. average
Local rate (Massachusetts)
$0.312/kWh
Monthly estimate: $29.91
U.S. average rate
$0.180/kWh
Monthly estimate: $17.26
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ad-after-state-table FAQ
- Most swamp cooler (evaporative) units fall between 200 W and 800 W, with 400 W as a typical value for estimates.
- Our calculator uses 400 W as the typical wattage, within a reported range of 200–800 W.
- At 8 hours/day and 400 W, the estimate is about 3.20 kWh per day.
- Using 8 hours/day, the estimate is about 96.0 kWh per month.
- Per hour, swamp cooler (evaporative) uses about 0.400 kWh (at 400 W).
- At typical use (400 W and 8 hours/day), the estimate is about $1.00/day at roughly $0.312/kWh.
- At typical use (400 W and 8 hours/day), the estimate is about $29.91/month at roughly $0.312/kWh.
- Running for one hour at 400 W costs about $0.125 per hour (using the Massachusetts rate of about $0.312/kWh).
- For typical use, the calculator estimates about $29.91/month for swamp cooler (evaporative) in Massachusetts.
- At the typical Massachusetts residential rate, the estimate is about 96.0 kWh per month, which corresponds to roughly $29.91/month for swamp cooler (evaporative).
- Compared to the U.S. average, Massachusetts is about 73% higher for this estimate. Monthly cost is about $29.91 in Massachusetts vs $17.26 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 Massachusetts rate ($0.312/kWh)