Here is another smart air purifier that removes 99.97% of allergens and pollutants and heats/cools you with purified air. The Dyson Pure Hot Cool Link Air Purifier combines with its app to let you know indoor air quality and local air metrics. You will be able to control it using Amazon Echo with voice commands.
The unit has sleep timer, night-time mode, and other convenient features. Its filter’s active carbon layer removes odors and toxins.[where to get it]