I absolutely love my Shark air purifier! It does the job of purifying as well as heats my home at the same time. The heater works exceptionally well and heats my room up within 20 minutes! I love that I can set it at a temperature I prefer and that it turns off the heat as soon as it gets to that temp and then turns back on when it gets to a lower temp. It has an adjustable fan and spin as well which is a great feature. I love being able to check the air quality from different kinds of particles and it tells me when I need to change the air filter. This is a one of a kind air purifier and I highly recommend it!