All built into one space-saving machine, so your family can enjoy the warmth of an adjustable electric heater without drying out your skin or the air around you. This electric air cleaner generates healthy, moist heat in medium to large rooms. Multiple settings allow you to adjust temperature and humidity to your comfort level. The true HEPA filter removes mold, mildew, smoke, viruses, germs and pet dander. Powerful fan operates independently of heater/humidifier for cool breeze in warmer months.