I absolutely love this shark air filter, this is perfect for smaller spaces. I have alot of pets and I also have allergies so I've been debating on an air filter for a long time. I love all things shark I have 2 of there vacuum cleaners and a steam mop I love so a shark air filter just made sense. The filter is a game changer. The first day of use I started noticing a difference in smell and my sniffling. The filter is super quiet even on the highest fan speed if it's on low I can not hear it running at all. This fits perfectly in a corner as well I love the smaller size and it still cleans 500 square feet. If you have pets you definitely need an air filter the air quality difference is night and day.