Coway Airmega Airmega 450(W);Airmega 450(BG);Airmega 450(*);AP-2524B_WT;AP-2524B_BG; AP-2524B_*: $82 a year to run

This model (Air purifiers) uses 389 kWh of electricity a year, which costs about $82 a year and $818 over 10 years at 21.0¢/kWh.

Energy use
389 kWh
per year
Running cost per year
$82
21.0¢/kWh
Running cost over 10 years
$818
Efficiency rank
229 / 240

Product details

Room size (sq ft)687
TechnologyFan and Filter
ENERGY STAR Most EfficientNo
Available sinceFebruary 1, 2025

Compared with the average model (Air purifiers), this one costs about $44 more a year.

More efficient alternatives

Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology