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.

We bought this after I noticed how fresh a neighbor’s house was. Unlike our old air purifier that ran continuously, this one only runs when there are odors - cooking - a candle has been lit etc. The house has a fresh, clean smell at all times now.

Got this to improve air quality in my home- live in an urban environment and have a large, shedding dog.Super simple to set up. I only use the cartridges on low, because the scent is a bit strong for me. It's so quiet I wasn't sure it was actually doing anything, until I was cooking and it dropped into the red! I love the easy to read display. I never use the remote, I've just let it run after turning it on over a month ago. Seems to be cutting down on dust/dander. Very happy with this purchase, and that I won't be feeding it filters constantly.

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.

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.

Bought this because of the “no change” filter and the automatic sensor. The automatic sensor really does work! I keep it on “auto” all of the time unless I want to run it on high to help eliminate a cooking odor faster. So far I’m very happy with my purchase and may buy another. I often forget it’s even on because it runs very quietly unless it’s on a higher setting. Would definitely recommend. No I am not affiliated with the company. No I was not paid for my review. Yes I’m a real person and own this item. I purchased this on my own without any payback for it.

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.

In a house with 2 dogs we thought this would be a good purchase. I don't really notice a change in the air or smells. Maybe if I left for a few days and returned. The only time we see the percentage go low is when cooking, mopping floors or burning a candle. That seems odd but so far I like it. Do not think the $300 investment was worth it, but still keeping it and running it.

I am in love with this purifier. I constantly cook and no matter how much I clean, my house never smells fresh and clean due to so much cooking with garlic, Cajun seasonings etc. but since I purchased this purifier within an hour of cooking the smells are gone.

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.