Cost to Run a Air Purifier in Delaware
Delaware's average residential electricity rate is 18.5¢/kWh as of July 2026 — the 33rd cheapest in the country, 1% above the U.S. average. At typical usage (24 hours/day (always on)), a air purifier here costs $5.40 per month.
Per hour
0.7¢
at 20–100 W
Per day
$0.18
24 hours/day (always on)
Per month
$5.40
29 kWh
Per year
$64.82
350 kWh
By usage level in Delaware
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (12 hrs/day) | 8.9¢ | $2.70 | $32.41 |
| Typical (24 hrs/day) | $0.18 | $5.40 | $64.82 |
| Heavy (24 hrs/day) | $0.36 | $10.80 | $130 |
Delaware 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 Delaware?
At Delaware's current average residential rate of 18.5¢/kWh (July 2026), a air purifier with typical usage costs about $0.18 per day, $5.40 per month, or $64.82 per year.
Is running a air purifier in Delaware more expensive than average?
It's almost exactly the U.S. average: $5.40 per month here versus $5.34 nationally.
What does electricity cost in Delaware right now?
Delaware residents pay an average of 18.5¢ per kWh as of July 2026 — the 33rd cheapest rate of the 51 U.S. jurisdictions we track.