The Philips Air Purifier & Heater AMF870/35 is a 3-in-1 appliance offering air purification, fan, and heating functionalities. Suitable for rooms up to 70m2, it effectively removes allergens, dust, pollen, odors, and 99.97% of particles using a HEPA filter with activated carbon and a pre-filter. Features include an air quality display, app and Alexa control, adjustable airflow, quick PTC ceramic heating, AI-powered automatic operation, Smart AeraSense sensors, quiet operation (up to 19dB), and energy efficiency (40W for purification).