Meet the Dyson Pure Hot Cool Link Air Purifier: another connected device that not only purifies the air but also cools you as a fan or heats your room. Its HEPA filter removes 99.97% of allergens and pollutant as small as 0.3 microns. Its active carbon filter gets rid of odors.
The device monitors air quality and provides you with reports on your smartphone. It has a sleep timer, auto, and night-time mode. Costs under $500 at this time.