Coway Airmega 400 Smart Air Purifier For $349 Shipped From Amazon

This was selling for $649 and is now the lowest price in the past year from Amazon.

• [Coverage] Designed to clean spaces up to 3,120 sq. ft. in 60 minutes
• [HyperCaptive Filtration System] Combination of a pre-filter, active carbon filter, and HEPA Filter reduces 99.97% of 0.3 micron particles, including pollen and other allergens. It also reduces volatile organic compounds and odor
• [Smart Mode] With its Smart Mode feature, the Airmega automatically adapts to its surroundings by adjusting fan speeds based on the room’s air quality; That means your unit is energy efficient without compromising effectiveness
• [Eco Mdoe] When the air quality in the room remains purified for 30 minutes or more in Eco Mode, the fan will turn off to conserve energy, kicking on again when pollution is detected
• [Sleep Mode] When the Airmega’s built-in light and pollution sensors detect that the room has been dark and the air clean for 3 minutes, Sleep Mode reduces the purifier’s noise and power consumption