Coway Airmega 350(W);Airmega 350(BG);Airmega 350(*);AP-1924A_WT;AP-1924A_BG; AP-1924A_*: $72 a year to run

This model (Air purifiers) uses 344 kWh of electricity a year, which costs about $72 a year and $723 over 10 years at 21.0¢/kWh.

Energy use
344 kWh
per year
Running cost per year
$72
21.0¢/kWh
Running cost over 10 years
$723
Efficiency rank
216 / 240

Product details

Room size (sq ft)558
TechnologyFan and Filter
ENERGY STAR Most EfficientNo
Available sinceFebruary 1, 2025

Compared with the average model (Air purifiers), this one costs about $34 more a year.

More efficient alternatives

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