Cost to Run a Box Fan in Idaho
Idaho's average residential electricity rate is 12.4¢/kWh as of May 2026 — the 1st cheapest in the country, 33% below the U.S. average. At typical usage (8 hours/day), a box fan here costs $2.26 per month.
Per hour
0.9¢
at 50–100 W
Per day
7.4¢
8 hours/day
Per month
$2.26
18 kWh
Per year
$27.16
219 kWh
By usage level in Idaho
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | 3.7¢ | $1.13 | $13.58 |
| Typical (8 hrs/day) | 7.4¢ | $2.26 | $27.16 |
| Heavy (16 hrs/day) | $0.15 | $4.52 | $54.31 |
Idaho vs. the rest of the country
Monthly cost at typical usage.
Idaho $2.26
West average $3.63
U.S. average $3.36
Frequently asked questions
How much does it cost to run a box fan in Idaho?
At Idaho's current average residential rate of 12.4¢/kWh (May 2026), a box fan with typical usage costs about 7.4¢ per day, $2.26 per month, or $27.16 per year.
Is running a box fan in Idaho more expensive than average?
No — it's cheaper. Idaho's rate is about 33% below the U.S. average: $2.26 per month here versus $3.36 nationally.
What does electricity cost in Idaho right now?
Idaho residents pay an average of 12.4¢ per kWh as of May 2026 — the 1st cheapest rate of the 51 U.S. jurisdictions we track.
Box Fan costs in nearby states
What else costs to run in Idaho
Electric Furnace $226/mo Central Air Conditioner $106/mo Heat Pump $90.47/mo Pool Heater (Heat Pump) $75.39/mo Garage Heater $56.54/mo Electric Water Heater $49.19/mo Tankless Electric Water Heater $47.50/mo Space Heater $45.24/mo Baseboard Heater $45.24/mo Oil-Filled Radiator Heater $45.24/mo Pool Pump $45.24/mo EV Charging (Level 2, Home) $37.70/mo