This shark air purifier max is an amazing product and truly cleans and purifies the air from allergens, bacteria, viruses and pet dander. This unit treats up to 1200 sf, so this can clean very large sized rooms or a whole house depending on size. This product is easy to use right from the box with simple instructions and starts working immediately once it’s plugged in. There’s different settings and the auto setting helps the filter last longer. It’s quiet while running and is energy efficient. This is also a nice looking unit and is made of high quality materials and I absolutely love this shark product! I highly recommend!