Clean Sense Air Purifier MAX (HP232)

Would the specs you just listed apply to the Shark Neverchange available at Costco? Because I just got that one, although it advertises 1500 sq ft for 1 change per hour. I can’t figure out what the CADR ratings are for it. I’m considering returning it. Wish the Winix C909 was in stock at Costco. Would be curious to hear your thoughts on a replacement that would cover an area similar to what the Shark should actually cover. Would the Winix 5520 on Amazon be a good choice? It’s actually heavily discounted right now.

I have a few Shark brand HEPA air purifiers I got at Costco. They're a little pricey, but they work great, they're quiet, and they have a built-in air quality monitor for PM 2.5, 5, and 10. If you don't have that kind of money, you can make those DIY air filters with a box fan and a MERV-13 air filter made for furnaces. If you don't use something like this, yeah its likely your indoor air quality isn't much better than the outside. I think people greatly take for granted the influence of air quality on their health. [Cardiovascular disease](https://today.uconn.edu/2025/08/air-purifiers-may-reduce-heart-risks-for-people-exposed-to-traffic-pollution/#), [cancer](https://www.aacr.org/patients-caregivers/progress-against-cancer/air-pollution-associated-cancer/#:~:text=After%20adjusting%20for%20smoking%20status,G.), and [pulmonary disease](https://www.epa.gov/pmcourse/particle-pollution-and-respiratory-effects#:~:text=Studies%20have%20reported%20respiratory%20effects,including%20COPD%20and%20respiratory%20infections.) are all associated with breathing even moderate concentrations of PM 2.5 for extended periods of time. I can't believe I see people jogging on the side of busy roads on days where the AQI exceeds 200, but I see it all the time.

I got a great Black Friday deal on the Shark Max last year. No apps and filters seem to be available through Shark and third parties easily. Yet to see how long it will last but I don’t do see any issues.

I bought the Shark Hepa Max couple weeks ago for the same price. It works good but i returned it and bought the Dyson TP07. I got it for $335 brand new. Go to Dyson's website and sign up for their news letter and text message and you'll receive a 10% off code. It works on sale products.

I bought one. Not so sure it works. The light ring that indicates a change in air quality does change when I cook. I’m in an apartment. The unit is in my living room. But it takes a good 40 min to an hour to get back to 100 %. I would think that’s just the natural time of the air clearing. No help from the unit. 🤷🏻‍♀️ Also I just put it in the bathroom w my bf while he poops. No change in the air reading or smell of the bathroom. After this test I am returning.