Winix C610 vs AT40

The Winix C610 is slightly better than the Winix AT40, though both are very similar air purifiers designed for medium-sized rooms. They have nearly identical cylindrical designs with 360-degree air intake, along with app connectivity, automatic fan adjustment, and ionization. The C610 delivers slightly stronger particle filtration, particularly at quieter fan speeds, making it a better choice if you want to clean the air without much background noise. The AT40 runs marginally quieter at maximum power, but the difference is unlikely to be noticeable in everyday use.