We can tell the difference in the air quality since we've been using this. We watched videos on Youtube to know how to use it the air freshener tab because the instructions didn't say.

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.

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 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've only had this air purifier for about a month, but so far, I love it. It gives you a percentage of how clean the air is and that lets you know when you need to clean the side screens. Just rinse in water, let dry and replace. Hoping the filter lasts the 5 years or so that it says it should. Saves a ton of money in filter replacement.

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 upgraded from our Shark air purifier that we’ve had for several years, and this purifier is light years ahead of other purifiers: it’s quieter, more efficient, and cleans the air in our basement quicker than anything we’ve ever used, not to mention the savings in filters. It’s hard to believe filter changes every 6 months at a cost of ~$70 per filter is a thing of the past.

Does what it’s made to do, clean air during winter. Use in kitchen area, works well to clear air of residual cooking smells. Is louder on high than our Alen purifier, but for what we use it, it’s perfect. Highly doubt the 5 year filter life, time will tell.

The shark air purifier works great. Very quiet. When I’m frying something in the kitchen, the air purifier kicks higher to purify the air in the house. The only thing that I am displeased with is the FedEx driver who was too lazy when he delivered my air purifier, he put it in the middle of the driveway instead of walking to my front porch, putting it under shelter and out of sight in front of my doorbell camera.

We bought 2 units each for up and down stairs. We had another brand before and didn't realize how noisy it was until we plugged these in. They really seem to push a lot of air and the freshener pods add a very subtle scent. The display indicates whether the air quality is degraded but it's a bit too sensitive in my opinion. They both display degraded air quality even when warming up the oven. No, it doesn't need to be cleaned, but there must be enough organic material being vaporized that it sets it off. They also show poor air quality when we use the fireplace, but I guess that's to be expected. Other than that, the units are easy to clean, can be remotely operated, and as previously stated, very quiet.