Cost to Run a Air Purifier in Delaware
Delaware's average residential electricity rate is 19.4¢/kWh as of May 2026 — the 33rd cheapest in the country, 5% above the U.S. average. At typical usage (24 hours/day (always on)), a air purifier here costs $5.66 per month.
Per hour
0.8¢
at 20–100 W
Per day
$0.19
24 hours/day (always on)
Per month
$5.66
29 kWh
Per year
$67.98
350 kWh
By usage level in Delaware
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (12 hrs/day) | 9.3¢ | $2.83 | $33.99 |
| Typical (24 hrs/day) | $0.19 | $5.66 | $67.98 |
| Heavy (24 hrs/day) | $0.37 | $11.32 | $136 |
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 19.4¢/kWh (May 2026), a air purifier with typical usage costs about $0.19 per day, $5.66 per month, or $67.98 per year.
Is running a air purifier in Delaware more expensive than average?
Yes. Delaware's electricity costs about 5% more than the U.S. average, so the same usage costs $5.66 per month here versus $5.37 nationally.
What does electricity cost in Delaware right now?
Delaware residents pay an average of 19.4¢ per kWh as of May 2026 — the 33rd cheapest rate of the 51 U.S. jurisdictions we track.