Cost to run a window air conditioner in Delaware

$0.17/hour

Window Air Conditioner at 900 W in Delaware (18.70¢/kWh) · $40.93/month at 8 h/day

By hours of use

Use	Per day	Per month	Per year
1 h/day	$0.17	$5.12	$61.43
2 h/day	$0.34	$10.23	$122.86
4 h/day	$0.67	$20.47	$245.72
8 h/day	$1.35	$40.93	$491.44
12 h/day	$2.02	$61.40	$737.15
24 h/day	$4.04	$122.79	$1,474.31

A 8,000-10,000 BTU window unit draws roughly 700-1,000 W while the compressor runs.

How much does it cost to run a window air conditioner in Delaware?

At 900 W and 18.70¢/kWh: $0.17 per hour, $1.35 per day and $40.93 per month at 8 h/day.

How does Delaware compare with other states?

The same use costs $27.84/month in Nevada (cheapest) and $103.27/month in Hawaii (most expensive); the US average is $39.75.

Price: EIA Electric Power Monthly, Table 5.6.A (residential, August 2026 preliminary; released October 23, 2026).

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