Best Air Purifier Filters of 2026

"I’ve noticed a significant improvement in my allergy symptoms and less pet dander and odors since running this purifier daily. With three cats in the house, it manages fur, dander, and litter box smells impressively well. It’s quiet enough for the bedroom and the filter is super easy to swap out. After two years, it’s still working perfectly. Definitely a must-have for pet owners with allergies."

"I always use the genuine Levoit Core 300-P replacement filters for my air purifier, and I can tell they’re high quality—no weird odors, and they fit seamlessly. My allergies are much less severe, dust is down, and the air smells fresh. In my house with two dogs and plenty of dust, one filter lasts about 3-4 months. They’re a bit pricier, but absolutely worth it for peace of mind."

"The Levoit filter makes a real difference in our home. Besides noticeably reducing allergens and smells, the purifier creates a steady white noise that’s actually soothing at night. Changing the filter is quick and simple. I’m impressed with its consistent performance."

"I've been using these genuine replacement filters for my GermGuardian air purifier, and I’m genuinely impressed. Swapping out the filter is a breeze, and I noticed the air felt fresher and cleaner almost immediately. The filter tackles dust, allergens, and odors effortlessly, and I really appreciate the peace of mind that comes with using the original brand. Highly recommend sticking with the genuine product for best results!"

"I have a German shepherd and two cats, so keeping up with pet hair and odors is a challenge. This is honestly the best deodorizing air filter I’ve ever owned—it captures stray hairs that even the vacuum misses and keeps things smelling fresh. It’s quiet, lasts a long time, and makes a real difference in my home."

"I replaced my old air purifier because it was hard to maintain, and switched to the GermGuardian with these filters. The real difference I noticed is the 'fresh air' smell that only the genuine filter provides, especially important in my office where my puppy hangs out. The filter fits perfectly, is easy to change, and helps keep both my office and attached bathroom smelling clean. Even when I tried a generic filter, it just wasn’t the same—there’s real value in the brand name replacement."

"With multiple pets at home, these filters have made a noticeable difference by removing fine dust, improving air quality, and eliminating odors. I also appreciate that installing new filters is quick and simple."

"These filters are a perfect fit for my device and come at a great price for a two-pack. After using them twice now, I can say they work just as well as the original brand."

"I placed these filters right by my litter boxes, and they've made a huge impact on room odor and air quality. Replacing them is effortless, and they run almost silently."

"I've kept my Levoit Core 200S running for over a year, and replacing the filters has always been quick and easy. Every time I install a new one, the air feels fresher, with noticeably less dust and odors. The filters have been consistently reliable, fitting perfectly and restoring the air purifier's performance. If you stay on top of your filter changes, this is a dependable choice that keeps everything running smoothly."

"These filters are fantastic for my air purifier—changing them is simple and they trap dust and particles really well. My air stays fresh all day thanks to these, making it easy to breathe at home."

"I have these filters on auto-ship for my Levoit and they do a great job removing odors, dust, and cat hair. When it’s time to replace them, the old filters are always covered in debris, showing how effective they are. The size is spot-on for my unit and installation couldn’t be easier!"

"I was impressed by how well this replacement filter fit my LEVOIT Core 300-P Air Purifier—installation was a breeze and it instantly made the air in my home feel cleaner. As a pet owner, I could tell that pet dander and odors were greatly reduced, and the 3-stage filtration system noticeably cuts down on smoke and allergens. I appreciate the solid build quality and the fact that it’s a cost-effective solution that doesn’t compromise on performance."

"After switching to this filter from the original brand, I realized it works just as well—if not better—than the OEM version. The fit was exact, it was simple to pop in, and my home’s air feels fresher. Pet fur and odors are under control, and my allergies have stayed in check. With the money I’m saving and no dip in quality, this was an easy choice!"

"I replaced my son’s LEVOIT Core 300 filter with this one and noticed a clear improvement in air freshness almost immediately. It fits perfectly, operates quietly, and feels sturdy. I’d say it’s a reliable alternative to the brand-name filter—highly recommend it if you want something that’s easy to use, durable, and effective."

"I’m amazed at how these filters deliver the same performance as the name brand but at half the price. The added essential oil pads are a great touch, and I honestly can't tell any difference in quality or effectiveness. Definitely a smart buy!"

"With pets at home, I really appreciate that this purifier completely removes any lingering pet odors and noticeably improves the air quality. The filter swap is super easy, and I barely notice any noise from the unit."

"I have both official and off-brand filters in my different Levoit purifiers, and honestly, there’s no difference in performance between them. This generic version is a perfect fit and saves me money. Just needed to reset the filter light, but that was easy enough to handle."

"I picked this purifier for its HEPA filtration and ability to cover up to 1,000 sq ft, and I’ve been really impressed with how much cleaner the air feels. The filters are high quality and effective against pollutants."

"The PuroAir has made a noticeable difference in my home. Air quality has improved, and my family’s allergies are much better. Changing the filter is simple, and the notification light is a nice touch. It’s reliable and covers my open-concept space easily."

"With a cat that sheds quite a bit, I’ve found the Puro Air 240 to be a huge help in reducing stale air. The filter replacements are easy and effective, and I immediately noticed less dust and fresher air."