KNKA Air Purifier for Home Bedroom Large Room Up to 3,500 Ft², HEPA Air Cleaner with Washable Pre-Filter, AHAM VERIFIDE, AQI Display, ECO Mode, Pet Mode for Pets, Allergies, Dust, Pollen, APH4000
$119.99
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Founded in 2005, KNKA specializes in environmental appliances including dehumidifiers, air purifiers, and humidifiers. With a professional design team and strict quality control, we balance performance with minimalist aesthetics. At KNKA, we believe clean air is the foundation of a happy life, which is why we focus on advanced technology and elegant design to create fresher, more comfortable living spaces.
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Product Dimensions : 8.15 x 12.36 x 17.09 inches; 9.68 Pounds
Item model number : APH4000
Date First Available : August 22, 2025
Manufacturer : KNKA
ASIN : B0FNDG2TNK
Best Sellers Rank: #1,487 in Home & Kitchen (See Top 100 in Home & Kitchen) #7 in HEPA Filter Air Purifiers
Customer Reviews: 4.9 4.9 out of 5 stars (937) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
𝐀𝐇𝐀𝐌 𝐕𝐞𝐫𝐢𝐟𝐢𝐞𝐝 & 𝐇𝐢𝐠𝐡 𝐂𝐀𝐃𝐑 𝐕𝐚𝐥𝐮𝐞: Certified by the Association of Home Appliance Manufacturers, this air purifier provides reliable performance with a Smoke/Dust/PM2.5 CADR of 226 CFM (384 m³/h) and a Pollen CADR of 244 CFM (415 m³/h). AHAM certification guarantees effective, high-speed air purification for your home.
𝐄𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭 𝐀𝐢𝐫𝐟𝐥𝐨𝐰 𝐃𝐞𝐬𝐢𝐠𝐧: Engineered with dual front-and-back air intakes and dual side outlets, this purifier maximizes circulation for faster air exchange. Filters the air in rooms up to 3,500 ft² once every hour, making it ideal for large rooms, living areas, and shared spaces.
𝐃𝐮𝐚𝐥 𝐅𝐢𝐥𝐭𝐞𝐫𝐬 & 𝟑-𝐒𝐭𝐚𝐠𝐞 𝐃𝐞𝐬𝐢𝐠𝐧: Equipped with dual front-and-back cartridges, each featuring a three-stage filtration system: a washable pre-filter for larger particles, a True HEPA filter, and an activated carbon filter. 3-in-1 filter system traps everything from pet hair to microscopic particles, ensuring thorough purification. (Please remove the filter’s plastic packaging before installation.)
𝐏𝐄𝐓 & 𝐄𝐂𝐎 𝐌𝐨𝐝𝐞𝐬: PET Mode increases airflow to tackle pet hair, dander, and odors, refreshing the air in just 30 minutes. ECO Mode saves energy and extends filter lifespan by entering standby when air quality is excellent, then restarting automatically when purification is required.
𝐌𝐮𝐥𝐭𝐢𝐩𝐥𝐞 𝐌𝐨𝐝𝐞𝐬 & 𝐅𝐚𝐧 𝐒𝐩𝐞𝐞𝐝𝐬: Includes Sleep Mode with noise levels as low as 22-24 dB for ultra-quiet nights, Auto Mode for effortless adjustments, and four fan speeds for personalized comfort. Select the setting that suits your needs any time of day.
𝐑𝐞𝐚𝐥-𝐓𝐢𝐦𝐞 𝐀𝐢𝐫 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐃𝐢𝐬𝐩𝐥𝐚𝐲: A built-in sensor monitors indoor air and displays the AQI in real time. Color-coded lights make it easy to check your air quality in an instant.
𝐇𝐚𝐬𝐬𝐥𝐞-𝐅𝐫𝐞𝐞 𝐌𝐚𝐢𝐧𝐭𝐞𝐧𝐚𝐧𝐜𝐞: The filter replacement indicator notifies you when it’s time for a change. For optimal performance, replace the filters every 3–6 months. Use genuine KNKA filters (search B0FQNYGVZF on Amazon).
5 reviews for KNKA Air Purifier for Home Bedroom Large Room Up to 3,500 Ft², HEPA Air Cleaner with Washable Pre-Filter, AHAM VERIFIDE, AQI Display, ECO Mode, Pet Mode for Pets, Allergies, Dust, Pollen, APH4000
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$119.99
George –
Absolutely Fantastic Air Purifier – A Breath of Fresh Air!
I’ve been using this air purifier and I can confidently say it’s one of the best purchases I’ve ever made for my home. From the moment I turned it on, I could literally feel and smell the difference in air quality.The dual HEPA filters d an amazing job capturing dust, pollen, and pet dander — my allergies have practically disappeared! I have a dog, and before this purifier, there was always that faint “pet smell” in the air. Now? It’s gone. The activated carbon filter is incredibly effective at eliminating odors and absorbing cooking smells. Even after a busy day in the kitchen, the air stays fresh and clean.What really stands out is how quiet the unit is. On the lower settings, it’s barely noticeable, making it perfect for nighttime use. I sleep better knowing I’m breathing clean air. The design is also sleek and modern, so it blends nicely with my decor instead of looking bulky or industrial.I also appreciate the smart features — the air quality sensor and automatic mode work flawlessly. It adjusts fan speed depending on the air quality, so I don’t have to think about it at all. The filter replacement indicator is another great touch that makes maintenance super easy.Overall, this air purifier has truly exceeded my expectations. My home feels fresher, my sinuses are clearer, and the air smells pure and crisp every day. If you’re on the fence, go for it — you won’t regret it!
Summer E Zachary –
Awesome Air Purifier
I’ve been using this air purifier and I can confidently say it’s one of the best purchases I’ve ever made for my home. From the moment I turned it on, I could literally feel and smell the difference in air quality.The dual HEPA filters do an amazing job capturing dust, pollen, and pet dander — my allergies have practically disappeared! I have a dog, and before this purifier, there was always that faint “pet smell” in the air. Now? It’s gone. The activated carbon filter is incredibly effective at eliminating odors and absorbing cooking smells. Even after a busy day in the kitchen, the air stays fresh and clean.What really stands out is how quiet the unit is. On the lower settings, it’s barely noticeable, making it perfect for nighttime use. I sleep better knowing I’m breathing clean air. The design is also sleek and modern, so it blends nicely with my decor instead of looking bulky or industrial.I also appreciate the smart features — the air quality sensor and automatic mode work flawlessly. It adjusts fan speed depending on the air quality, so I don’t have to think about it at all. The filter replacement indicator is another great touch that makes maintenance super easy.Overall, this air purifier has truly exceeded my expectations. My home feels fresher, my sinuses are clearer, and the air smells pure and crisp every day. If you’re on the fence, go for it — you won’t regret it!
Kindle Customer –
Great Air Purifier for Pets and Allergies to Pets
I am just excited about my home purifier, have allergies to Dog and Cat dander. I have a puppy with puppy smells, My animals are my family. So I need a good home purifier. My allergist had told me to make sure it had the Hepa filter. Did a lot of research as I did. The Knika Air Purifier was exactly what i needed and more.It is beautiful. It looks so nice in my home. EASY to use and comes with a manual. I started using it right away very quiet and in love all the functions, has it own pet mode also. My home odors were so much better withing 30 mins I could tell the difference. The HEPA worked so well with great air flow. We get a lot of fires in are area and this will help us so much. Saves money with the washable HEPA filter. Love the pretty light. You can turn it off it you want.I can confidently say this was one of the best purchases I have made.
Allison –
Great Air Purifier!
I would definitely recommend this air purifier! As we begin to focus on the air quality in our home, I have shoppped several different air purifiers online and found this one works perfect for our family. Their are several different settings that allow for different levels of air filtration and noise so if you want it quieter at night or louder when you aren’t home, it is possible. This filter also has an auto mode that will adjust accordingly when different circumstances come up where the filtration needs to be higher or lower. I absolutely love the pet mode. It runs on high with this mode and this is an absolute game changer for us with two dogs that shed daily. I also really like how the colors change to indicate the air quality. Green good, yellow moderate, and red is bad. My only complaint is that the feet of the unit did not snap in place securely but it really is a non issue unless you are constantly moving the unit. We set ours up and left it in the same spot so it was not an issue for us. Setup was super easy and was able to plug it in and use it in 5 minutes from opening the box. It shipped quick which I appreciated. Some times these filters take a few weeks. All in all I am very happy with this item and I would purchase again.
theSavvyShopper –
Premium Air Purifier with Rich Features
I received this air purifier a few days ago. It came in well packaged. Upon unboxing, a few things stood out to me. This is definitely a premium air purifier. It’s energy star rated, as well as ETL rated for safety. It uses a power adapter (rated VI for efficiency which is good). It has a built in air quality meter which gives you a digital reading as well as a color display (red, yellow, blue and green) which gives you a quick indication of your indoor air quality. It comes with 2 filter sets (one on each side and each has a HEPA filter as well as a carbon filter for odors and such). It has a filter life indicator button, night mode (low light, low noise), child lock button and an essential oil drawer. The unit has 4 fan speeds and 3 filtration modes. The unit also is smaller than its competitors with a creative design fitting one filer on each side to make the unit smaller. The air exits on both sides. We own quite a few air purifiers due to the air quality where we live, so I’m quite familiar with what to look for in an air purifier and overall I’d highly recommend this unit.