I have a couple other air purifiers in my home and this one is a new addition. Have not had it long, but so far it seems to work well--very quiet. I like the odor neutralizer packets since I have pets and that the filter may be cleaned.

We love this Air Purifier. It really works to clear the air of unwanted odors. It works overtime when I cook fish in the broiler and does the best job to refresh the air.

Really helps to keep the house smelling clean and fresh! In a busy house with two dogs that cooks frequently, the purifier helps freshen the area quickly.

Sensor broke and get nothing but an error code. It no longer works after only 20 days🥴 I e called and went thru the check list to fix it but it always just says 0 and blows air. Useless.

Really doesn't work well with cigar smoke. The filter gets dirty very quickly so you have to constantly vacuum it to get rid of the particles. Not worth the price

Had this for less than 3 months and it stopped working. Tried contacting Shark customer service to see if they could trouble shoot anything prior to contacting the store. They refused to help. This is my first Shark product. Returning product back to the store.

I have two dogs and when I’ve ask company that has came over if they still smell my dogs, they said no. I’ve even notice the fresher smell when coming home. When cooking the air quality drops some and my Shark kicks in and gets it back to 100 after a couple hours. It’s quiet and when it runs on high, sounds like a fan running. Set it on auto and let it do the work! The air scents are nice and not overpowering. Invest! It’s worth it!

So far it's great except for one MAJOR issue - the way eco mode works. I decided after several years with my old (different brand) air purifier, it was time for an upgrade. After shopping around I decided on this one (I went Into it already biased in favor of Shark / Ninja brand, as up until now I've loved every thing I've ever bought from the brand). Powered it up and thought everything was great, until I few hours later I began to pick up some cat litter box odors that I had never had before. My assumption was that the odor control feature of this purifier would absolutely ensure even better odor control than my old one, which had no such feature and cost half the price. Boy was I wrong. Since getting it several days ago, the only time it will come out of eco mode and turn on is if I'm cooking and some little something burns off when I turn the burner on. When that happens it comes on for a few minutes then right back to eco mode. The major malfunction comes into play due to the fact that there is no odor control of any kind when it's in eco mode - it's literally just turned off and sniffing the air for particles to see if it needs to turn back on. And cats going to the litter pan don't trigger it to turn on. So I thought that would be easy enough to solve - just turn off eco mode. Well, turns out that if you want the fan to auto-adjust at all you can't turn off eco mode - no way to set it to always run at minimal speed and ramp up when needed (like my prior unit could do). So my options now are to let a multi-hundred dollar device just sit powered off and doing nothing for me 23 hours out of the day, manually set it to always run at a low speed and have it do nothing to help the air quality when I'm cooking and it needs to turn up, manually set it to always run on high and deal with the noise and shortened 'neverchange' filter life - or return it and buy something else. As of writing this, I'm still undecided on which option I'll go for.

We love this air purifier, we have another very expensive name brand that does not do the job this Shark does. It kicks on when cooking a lot also when we are burning our wood fireplace. We love the automatic feature instead of having to run 24/7 and hope it doing it job like our other expensive one. Highly recommend the Shark NeverChange!

WARNING!!! DO NOT BUY THIS PRODUCT. I bought it on Wednesday. It went immediately to 100% pure air in the house. Odd! On Sunday it went to 0% and stayed there. The troubleshooting solution did not work. I called Shark on Monday as they do not have 24/7 service. They sent a link for a video you are REQUIRED to watch for service. The link did not work. Eventually the Rep determined that the unit wasn't working and needed to be replaced. But she couldn't authorize the replacement because this model - HP305 - is NOT IN THEIR SYSTEM. I kid you not. She wanted me to send a video of me cutting off the cord but then decided I needed to send the whole unit back. They would send me a label and maybe I'd have the replacement, not this model but a similar one, by Christmas. Are you kidding me? 58 minutes of my life wasted. I will be returning it to Sams. Only giving it one star because you can't give it less.