Electric arc welder vs Swamp cooler (evaporative): which costs more to run? (2026)
Baseline uses U.S. average $0.180/kWh, typical wattage, and typical hours/day from our catalog. At that rate: Electric arc welder ~$2.43/mo (13.5 kWh/mo) · Swamp cooler (evaporative) ~$17.26/mo (96.0 kWh/mo).
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Estimates below use the rate you pick (defaults match your locale when possible). The summary paragraph above stays at U.S. average for SEO; see methodology for sources.
Electric arc welder
Lower cost- Typical watts
- 1500 W
- Hours/day
- 0.3
- Monthly est.
- $2.43
- kWh/mo
- 13.5
Swamp cooler (evaporative)
Higher cost- Typical watts
- 400 W
- Hours/day
- 8
- Monthly est.
- $17.26
- kWh/mo
- 96.0
Swamp cooler (evaporative) is estimated to cost more per month at typical use.
Compare by U.S. state
State pages use local utility averages (TYPE7). Open a state for either appliance to fine-tune hours and watts.