Air Purifier Electricity Calculator in District of Columbia

A air purifier in District of Columbia costs about $3.05 a month ($37.08 a year) to run at the state's average rate of 25.40 ¢/kWh. Use this calculator to compare light, typical, and heavy use.

District of Columbia average rate
25.40 ¢/kWh
Assumed wattage
50 W
Typical usage pattern
8 hours/day
Typical monthly cost
$3.05
Typical yearly cost
$37.08

Key metrics

MetricValue
District of Columbia average rate25.40 ¢/kWh
Assumed wattage50 W
Typical usage pattern8 hours/day
Typical monthly cost$3.05
Typical yearly cost$37.08

Air Purifier in District of Columbia vs U.S. benchmark

District of Columbia monthly estimate
$3.05
U.S. monthly estimate
$2.21
Difference
+$0.84
State rate
25.40 ¢/kWh

Calculator assumptions

This calculator uses a typical wattage range of 25-100 W, and we assume 50 watts for 8 hours/day. The formula is kWh = (watts × hours) / 1000.

At this profile, the appliance uses 12.0 kWh per month and 146.0 kWh per year.

Appliance calculator scenarios

ScenarioHours/dayAnnual energyDistrict of Columbia monthlyU.S. monthlyDistrict of Columbia yearly
Light usage4 hours/day73.0 kWh$1.52$1.11$18.54
Typical usage8 hours/day146.0 kWh$3.05$2.21$37.08
Heavy usage12 hours/day219.0 kWh$4.57$3.32$55.63

Appliance cost reference page

Want the full write-up? The appliance page below uses the same rate and wattage assumptions:

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Source & Method

Source: U.S. Energy Information Administration (EIA) Retail Sales of Electricity. Updated: May 2026. Estimates use the EIA all-in average residential rate — energy, delivery, fixed charges, and utility fees together, not just the electricity itself. Fees are inside the rate, not an extra on top; how your own bill splits fixed versus per-kWh charges varies by utility. For what's inside the all-in rate, see hidden electricity fees; for how rates and estimates are defined, see the methodology hub.

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