WattCost

Data through April 2026

Running cost · Air Purifiers · ENERGY STAR certified

Coway AP-2023K

At the standardized usage ENERGY STAR assumes, the Coway AP-2023K consumes 277 kWh a year — about $52 at the U.S. average electricity rate ($4.35 a month). It sits near the bottom of the certified table — using 87% more than the median air purifier (rank 167 of 214) — so the state you live in matters more than usual. The same unit costs $34 a year in North Dakota but $129 in Hawaii — electricity rates, not the appliance, make the difference. Note the certified pool here is small (214 models), so rankings shift more with each data refresh.

Estimated annual running cost · U.S. average rate 18.8¢/kWh

$52/yr

$5.65 · cheapest certified air purifiers$92 · priciest
Per month
$4.35
Per day
14¢
Certified use
277 kWh/yr
Rated room size
468 sq ft
CADR (smoke)
302
Technology
Fan and Filter
Efficiency
6.4 CFM/W
30 kWh490 kWh
Where the Coway AP-2023K (▮) sits among all 214 certified air purifiers, by annual kWh

What it costs in every state

Coway AP-2023K: 277 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$48
Alaska27.4¢$76
Arizona15.5¢$43
Arkansas14.2¢$39
California35.3¢$98
Colorado16.5¢$46
Connecticut32.2¢$89
Delaware18.8¢$52
District of Columbia25.4¢$70
Florida15.4¢$43
Georgia15.4¢$43
Hawaiipriciest46.6¢$129
Idaho12.7¢$35
Illinois20.5¢$57
Indiana17.9¢$50
Iowa13.9¢$38
Kansas15.8¢$44
Kentucky15.0¢$42
Louisiana14.4¢$40
Maine28.4¢$79
Maryland22.1¢$61
Massachusetts29.4¢$82
Michigan21.4¢$59
Minnesota16.4¢$45
Mississippi16.8¢$46
Missouri14.0¢$39
Montana13.9¢$39
Nebraska13.3¢$37
Nevada14.3¢$40
New Hampshire27.2¢$75
New Jersey23.5¢$65
New Mexico15.2¢$42
New York29.4¢$82
North Carolina16.3¢$45
North Dakotacheapest12.3¢$34
Ohio19.5¢$54
Oklahoma13.3¢$37
Oregon15.8¢$44
Pennsylvania21.5¢$59
Rhode Island28.3¢$78
South Carolina17.1¢$47
South Dakota14.5¢$40
Tennessee14.9¢$41
Texas17.0¢$47
Utah13.3¢$37
Vermont24.6¢$68
Virginia17.4¢$48
Washington14.4¢$40
West Virginia16.1¢$44
Wisconsin19.2¢$53
Wyoming14.7¢$41

Certified models closest in efficiency

air purifiers within reach of 277 kWh/yr
ModelkWh/yr$/yr (US avg)
Coway Airmega AP-2023K277$52
CUCKOO CAC-R1510FW281$53
Winix AT40272$51
Dreo DR-HAP003S282$53
Dreo Home DR-HAP003S282$53
Bosch Air 6000289$54

Run your own numbers

Your rate, your numbers

Per day
14¢
Per month
$4.35
Per year
$52

277 kWh/yr × 18.8¢/kWh = $52/yr

Prefilled with this model's certified 277 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh comes from the ENERGY STAR room air cleaner test basis, which assumes continuous daily operation. Running fewer hours costs proportionally less.

Certified variants covered by this entry

AP-2023K · AP-2023K

Questions, answered with the data

How much electricity does the Coway AP-2023K use?
ENERGY STAR certifies the Coway AP-2023K at 277 kWh per year. The certified annual kWh comes from the ENERGY STAR room air cleaner test basis, which assumes continuous daily operation. Running fewer hours costs proportionally less.
How much does the Coway AP-2023K cost to run per month?
About $4.35 a month at the U.S. average residential rate (18.8¢/kWh) — 14¢ a day, or $52 a year. Your state's rate moves this up or down; see the table above.
Is the Coway AP-2023K energy efficient?
It uses 87% more electricity than the median certified air purifier, which puts it among the least efficient certified models.
What does the Coway AP-2023K cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $34 a year in North Dakota (12.3¢/kWh) and $129 in Hawaii (46.6¢/kWh).
Does this figure cover other model numbers?
Yes — 2 certified retail variants (color, finish, and store-specific SKUs) share this exact energy certification. They're listed under "Certified variants" on this page.

Keep digging