I purchased 2 of these to replace older Bissell air cleaners. Unfortunately I returned both. The reason I returned both was because of the automatic "Eco" setting. I am a firm believer that when an air purifier is constantly filtering air, even at a very low setting, that it will read the air pollution more accurately. These air purifiers have an automatic "Eco" setting that turns the fan off. You cannot set it to filter at the lowest setting without it turning off after 5 minutes or so. Definitely felt like our Bissell air purifiers cleaned the air more often then these brand new ones. So I returned them. Also, the design of the filter housing at the bottom of the unit is nice but not practical. You have to be VERY careful when repositioning or moving the unit because the filter housing at the bottom will unlock easily and when you lift the unit the filter comes out. Not every time but often enough to where it becomes annoying. One last thing. The overall design is beautiful but since it is a cylindrical shape it's not very practical if you are positioning it against a wall. It sticks out like a sore thumb.

[This review was collected as part of a promotion.] I absolutely love this air purifier!! For starters i love that the filter lasts for up to 5 years!!!! Not only does that save me a ton of money but it also makes it so convenient that i don't have to worry about changing the filter!! Set up for this air purifier took less than 5 minutes and it was super easy! The display shows me the air quality percentage as well as the amount of particles in the air. The display shows colors as well as levels so it makes it to super easy to just look at the screen and know by the color what level the air is at. blue is good, yellow for fair and red for poor. It's amazing how quickly it purifies the air as well! Whenever I cook the air purifier drops down the yellow & red levels but within a few minutes it's back up to blue! Overall i absolutely love this air purifier and definitely recommend it to everyone! My breathing is so much better and i've noticed my indoor allergies have significantly decreased since using this!

[This review was collected as part of a promotion.] The ease of use is amazing, it eliminates odors within minutes; and it's very quite. Overall, an amazing product! Thank you Shark!!Once and while you can take it out and use the vacuum on it and put it back! It so great that I decide to buy another one for my home.

Seems to work well. Moved into a very dusty old house and felt like the air quality wasn't great. I love that it gives easy to understand air quality rating. We started at like 55 percent. After it gets to 100 percent it shuts off. It's a couple rooms away but it always kicks on when we use the gas stove or when the heat kicks on. Setup was super easy too.

[This review was collected as part of a promotion.] I received this as gratis from influenster for free for my honest review. This thing tests the air quality and cleans the air based on that. We put it in the basement with the cats and it has been amazing for the air quality down there!! It went from 30% to 100% and runs quietly too! I would recommend this to anyone with allergies or poor air quality it definitely does the job! Easy to use!

[This review was collected as part of a promotion.] I've set up this in my Santa Monica apartment, and it's been working wonders. With the windows open most days to let in the sea air, this purifier helps keep the indoor air quality top-notch. It sits right next to my gas radiator, which I've found to be the best spot for it to circulate clean air throughout the room. It's quick to clear out any cooking smells, which is a real plus. The best part? The filter that doesn't need changing, saving time and effort. It's a simple and efficient solution for anyone looking to improve their home air quality without any hassle. I'd recommend it above any other purifier - and I've tried quite a few!

I bought this a few weeks ago, and I was hopeful it would do everything the description said it would.  My wife and I built a new home, and it is so dusty.  She says she can dust one day, and the next day, everything is covered in dust again.  This was really bad in our bedroom because our furniture is dark.  After a thorough cleaning of the room, my wife tells me there isn't any dust, even after five days.  She is thrilled.  We do have the unit set up in the bedroom and have it at full speed during the day.  We are going to move it into the living room to see what happens then.  I will probably buy the smaller unit for that bedroom as no other room seems to get as dusty.

[This review was collected as part of a promotion.] We have terrible sinus issues in this home as well as pets, so sometimes the air quality indoors can get a little questionable, lol. Now since I've received this wonderful product I've really noticed a huge difference. The air doesn't seem as heavy and we don't have to dust as much!!! It's a real winner!

This purifier has exceeded my exceptions! I have it in the kitchen for maximum purification. It is powerful enough to draw in hairspray odors from upstairs bathŕoom. It effectively traps cat hair and absorbs kitty litter odors. The fact that is is easy to clean the removable side filters and the large hepa filter that lasts for 5 years is a plus! Great product!

[This review was collected as part of a promotion.] I wanted to give this thing a fair trial. Being in the kitchen it kept reading 0% clean air. It was near the litterbox so we gave it a pass. Our closet has had a smell since we installed shelves so I figured a small enclosed space would be an easy test to see how well it works. We have an air quality sensor that we compared it to. As you can see the ACTUAL particals per million are far less than the Shark purifier reads. It has been in there for a full month and the “air quality” has not changed. There also is still a woody smell from the shelves. So not only is the sensor absolute garbage, so is the purifier itself. DO NOT PURCHASE THIS. *I was given this product for free by Influenster in exchange for my honest review.