Cost to Run a Dehumidifier in Washington
Washington's average residential electricity rate is 15¢/kWh as of May 2026 — the 16th cheapest in the country, 18% below the U.S. average. At typical usage (10 hours/day), a dehumidifier here costs $22.80 per month.
Per hour
7.5¢
at 300–700 W
Per day
$0.75
10 hours/day
Per month
$22.80
152 kWh
Per year
$274
1,825 kWh
By usage level in Washington
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (5 hrs/day) | $0.38 | $11.40 | $137 |
| Typical (10 hrs/day) | $0.75 | $22.80 | $274 |
| Heavy (20 hrs/day) | $1.50 | $45.60 | $548 |
Washington vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a dehumidifier in Washington?
At Washington's current average residential rate of 15¢/kWh (May 2026), a dehumidifier with typical usage costs about $0.75 per day, $22.80 per month, or $274 per year.
Is running a dehumidifier in Washington more expensive than average?
No — it's cheaper. Washington's rate is about 18% below the U.S. average: $22.80 per month here versus $27.97 nationally.
What does electricity cost in Washington right now?
Washington residents pay an average of 15¢ per kWh as of May 2026 — the 16th cheapest rate of the 51 U.S. jurisdictions we track.