WattCost

Data through April 2026

Running cost · Air Purifiers · ENERGY STAR certified

Coway Airmega Airmega 450S(W);Airmega 450S(BG);Airmega 450S(*);AP-2524C_WT;AP-2524C_BG; AP-2524C _

At the standardized usage ENERGY STAR assumes, the Coway Airmega Airmega 450S(W);Airmega 450S(BG);Airmega 450S(*);AP-2524C_WT;AP-2524C_BG; AP-2524C _ consumes 399 kWh a year — about $75 at the U.S. average electricity rate ($6.26 a month). Even among certified models it's on the thirsty end: 170% more electricity than the median air purifier, ranked 210 of 214. The same unit costs $49 a year in North Dakota but $186 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

$75/yr

$5.65 · cheapest certified air purifiers$92 · priciest
Per month
$6.26
Per day
21¢
Certified use
399 kWh/yr
Rated room size
687 sq ft
CADR (smoke)
443
Technology
Fan and Filter
Efficiency
6.6 CFM/W
30 kWh490 kWh
Where the Coway Airmega Airmega 450S(W);Airmega 450S(BG);Airmega 450S(*);AP-2524C_WT;AP-2524C_BG; AP-2524C _ (▮) sits among all 214 certified air purifiers, by annual kWh

What it costs in every state

Coway Airmega Airmega 450S(W);Airmega 450S(BG);Airmega 450S(*);AP-2524C_WT;AP-2524C_BG; AP-2524C _: 399 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$69
Alaska27.4¢$109
Arizona15.5¢$62
Arkansas14.2¢$56
California35.3¢$141
Colorado16.5¢$66
Connecticut32.2¢$129
Delaware18.8¢$75
District of Columbia25.4¢$101
Florida15.4¢$61
Georgia15.4¢$61
Hawaiipriciest46.6¢$186
Idaho12.7¢$51
Illinois20.5¢$82
Indiana17.9¢$71
Iowa13.9¢$55
Kansas15.8¢$63
Kentucky15.0¢$60
Louisiana14.4¢$58
Maine28.4¢$113
Maryland22.1¢$88
Massachusetts29.4¢$118
Michigan21.4¢$85
Minnesota16.4¢$65
Mississippi16.8¢$67
Missouri14.0¢$56
Montana13.9¢$55
Nebraska13.3¢$53
Nevada14.3¢$57
New Hampshire27.2¢$109
New Jersey23.5¢$94
New Mexico15.2¢$60
New York29.4¢$118
North Carolina16.3¢$65
North Dakotacheapest12.3¢$49
Ohio19.5¢$78
Oklahoma13.3¢$53
Oregon15.8¢$63
Pennsylvania21.5¢$86
Rhode Island28.3¢$113
South Carolina17.1¢$68
South Dakota14.5¢$58
Tennessee14.9¢$60
Texas17.0¢$68
Utah13.3¢$53
Vermont24.6¢$98
Virginia17.4¢$69
Washington14.4¢$57
West Virginia16.1¢$64
Wisconsin19.2¢$77
Wyoming14.7¢$59

Certified models closest in efficiency

air purifiers within reach of 399 kWh/yr
ModelkWh/yr$/yr (US avg)
Coway Airmega 450S(W);Airmega 450S(BG);Airmega 450S(*);AP-2524C_WT;AP-2524C_BG; AP-2524C _399$75
AirDoctor AD4000396$75
CUCKOO CAC-F3010FW406$76
Coway Airmega 450(W);Airmega 450(BG);Airmega 450(*);AP-2524B_WT;AP-2524B_BG; AP-2524B_389$73
Coway Airmega Airmega 450(W);Airmega 450(BG);Airmega 450(*);AP-2524B_WT;AP-2524B_BG; AP-2524B_389$73
LEVOIT LAP-C601S-WUSR389$73

Run your own numbers

Your rate, your numbers

Per day
21¢
Per month
$6.26
Per year
$75

399 kWh/yr × 18.8¢/kWh = $75/yr

Prefilled with this model's certified 399 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.

Questions, answered with the data

How much electricity does the Coway Airmega Airmega 450S(W);Airmega 450S(BG);Airmega 450S(*);AP-2524C_WT;AP-2524C_BG; AP-2524C _ use?
ENERGY STAR certifies the Coway Airmega Airmega 450S(W);Airmega 450S(BG);Airmega 450S(*);AP-2524C_WT;AP-2524C_BG; AP-2524C _ at 399 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 Airmega Airmega 450S(W);Airmega 450S(BG);Airmega 450S(*);AP-2524C_WT;AP-2524C_BG; AP-2524C _ cost to run per month?
About $6.26 a month at the U.S. average residential rate (18.8¢/kWh) — 21¢ a day, or $75 a year. Your state's rate moves this up or down; see the table above.
Is the Coway Airmega Airmega 450S(W);Airmega 450S(BG);Airmega 450S(*);AP-2524C_WT;AP-2524C_BG; AP-2524C _ energy efficient?
It uses 170% more electricity than the median certified air purifier, which puts it among the least efficient certified models.
What does the Coway Airmega Airmega 450S(W);Airmega 450S(BG);Airmega 450S(*);AP-2524C_WT;AP-2524C_BG; AP-2524C _ cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $49 a year in North Dakota (12.3¢/kWh) and $186 in Hawaii (46.6¢/kWh).

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