Having 2 dogs, 1 cat, and 2 teenage boys sometimes the air is not so fresh in our home. The Shark Air Purifier 3-in-1 has done an amazing job cleaning the air in our family room! First off, it's very easy to get started. The filter goes into the bottom of the purifier. Easy to put the filter into the machine. Close the cover, turn machine right side up and your ready to go. We use the auto function setting and I love how the Shark adjust to how much time the purifier should when and when it should run. This is a outstanding purifier that really will clean the air in your home!