I just started using this so it is too soon to determine how well it works. Overall I am pretty happy with it. I was disappointed it did not come with a complete owners manuel indicating what all the symbols on the control panel mean and work. I scanned the QRcode for more info but all I got was some YouTube videos that didn't really answer my questions.

A wonderful Shark NeverChange Air Purifier for my living room works great. I have 2 dogs and a Congo African Gray Parrot. My home can become smelly quickly so, having this Air Purifier next to one dog bed really helps to prevent bad odors. The Purifier works great, not very loud at all. After cooking meals the Purifier helps with food odors also.

This machine is a beast. It cleaned up the air quality in my home for the first time in years. Friends of ours instantly recognized the difference because we have pets and live near an industrial site. And no matter how often we sprayed or aired out the house there was always a lingering odor. We turned the air purifier up to maximum speed which sounded like a storm. But within an hour the meter displayed 100%. We have had the setting on low for the past two weeks and it is so quiet i can't believe its working efficiently. We have allergies and guess what? we don't spray anymore for odors nor does our eyes and nose run.

Very quite & does its job! Great for when cooking because it rids your home of any newly introduced oders & leaves no lingering oders. The auto detection of the air is amazing because as soon as a smell is detected the machine gives a reading of air quality & turns on, once the air quality returns to 100% the machine returns to auto mode & continues to monitor the air quality of your home.

This started out great. I thought. But it stopped working for no reason after 2 weeks of use. I followed all the instructions to a T. I contacted the Shark helpdesk and did what they suggested and it worked again, for a day! Neither myself or my husband noticed any difference in our air quality while it was working and none of the side filters had collected anything. I took it back to Sam's club for a full refund. Easy process and the people at the customer service desk were easy to work with.

This has really improved the air quality in my space. I know several people have said that it doesn't work because of the initial reading of 100% but i found that after running it on auto for 24 hours, it began getting more accurate readings. I am very happy with this purchase and would recommend it to friends and family.

I have never had an air purifier before. I was hoping it might help with allergies, dust particles and lingering odors from cooking, etc. well, it does ALL of that! 110% pleased with this purchase. It is extremely quiet on the 2 lower speeds, you don’t even know it’s on. I love it. Great purchase.

I have only had this air purifier for a couple weeks. But so far it seems to be doing a great job. I like the display because you can really see when various activities put micro particles into the air, you can see with the air purifier starts to work harder (when in auto mode), and once the air has been cleaned. This air purifier easily cleans the main floor in my townhouse, so it usually runs at the lowest level and it is very quiet.

Big improvement in our air quality at home. Not perfect, but vast improvement. I’m 70 and this is our first air purifier. It’s a Shark, and advertised as a “NeverChange” filter, but ours was down to 94% efficiency after the first week - however we live in El Paso and the air quality here has been the worst in America for several weeks…the CEILING of the danger zone (500). Yes, I would buy this unit again. Also, Sam’s was offering a $50 discount, which helped a lot.

It is amazing, it cleans the air up wonderfully. I plugged it in late afternoon. Let it running on high during the early hours of the morning. Around 2:00 I got up and put it on auto and stay’s on 100% unless I cook bacon or onions stuff like that. Then after it takes about 15 minutes it cleans air up again and back to 100%. Our sinuses are so much better. We were getting over Covid when it come in. It helped with breathing. Just amazing.