Cost to Run a Air Purifier 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 (24 hours/day (always on)), a air purifier here costs $3.62 per month.
Per hour
0.5¢
at 20–100 W
Per day
$0.12
24 hours/day (always on)
Per month
$3.62
29 kWh
Per year
$43.45
350 kWh
By usage level in Idaho
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (12 hrs/day) | 6.0¢ | $1.81 | $21.72 |
| Typical (24 hrs/day) | $0.12 | $3.62 | $43.45 |
| Heavy (24 hrs/day) | $0.24 | $7.24 | $86.90 |
Idaho vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a air purifier in Idaho?
At Idaho's current average residential rate of 12.4¢/kWh (May 2026), a air purifier with typical usage costs about $0.12 per day, $3.62 per month, or $43.45 per year.
Is running a air purifier in Idaho more expensive than average?
No — it's cheaper. Idaho's rate is about 33% below the U.S. average: $3.62 per month here versus $5.37 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.