With the Philips AMF870/15, you can breathe cleaner air at home. This air purifier uses a HEPA 13/14 filter that removes 99.97 percent of the smallest particles from the air. This means you’ll have fewer problems with allergens, viruses, and bacteria. On cold days, you can heat your room with the heating function. You can choose from 10 temperature settings up to a maximum of 37 degrees Celsius. On warm days, the fan function cools your room by blowing air throughout the space. You can connect the air purifier to a smartphone app. This lets you control the air purifier remotely and see information about the air quality.