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
Original price was: $149.99.$23.99Current price is: $23.99.
From the brand
Welcome to KNKA store ~
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.
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: #4,259 in Home & Kitchen (See Top 100 in Home & Kitchen) #23 in HEPA Filter Air Purifiers
Customer Reviews: 5.0 5.0 out of 5 stars 672 ratings 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 242 CFM (411 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.
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).
6 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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We Go Fishing –
Excellent Air Purifier That Truly Delivers!
I’ve been using the KNKA Air Purifier for a few weeks now, and I’m honestly blown away by how much of a difference it’s made in our home. We have pets and seasonal allergies in the household, so clean air is a big priority. This purifier covers up to 3,500 square feet, which is perfect for our open floor plan living room and adjoining bedrooms. I can immediately tell when it’s on — not by the sound (it’s incredibly quiet, even on higher settings) — but by how much fresher the air feels.The HEPA filtration system does an outstanding job. I’ve noticed a huge reduction in dust and pet dander around the house, and my allergy symptoms have improved noticeably. The air just feels cleaner and lighter. I also appreciate the real-time air quality indicator, which changes color to show the current air quality — a great visual touch that helps me know it’s working effectively.Setup was simple: just unbox, remove the plastic from the filters, plug it in, and go. The controls are intuitive, with a timer function, adjustable fan speeds, and even a sleep mode that keeps it whisper-quiet through the night. The design is sleek and modern enough to blend in with any room décor.Another plus is how energy-efficient it seems to be, especially for its coverage area. We’ve kept it running almost continuously without noticing any significant change in our electric bill.Overall, the KNKA Air Purifier has exceeded my expectations. If you’re looking for a reliable, high-performance purifier for a large room or even your whole home, this one is absolutely worth the investment. The air in our home has never felt cleaner!
nrtrcs –
So good I bought a second unit.
★★★★★ Outstanding Air Filter — So Good I Bought Another!This is the second Kanka Air Filter I’ve purchased this year, and it’s every bit as impressive as the first. I live in an older home that’s undergoing renovation, so there’s a constant mix of musty “old house” smells, paint fumes, and construction dust. The first Kanka model handled it beautifully, so I decided to add a second—this time, a larger model for broader coverage.Setup was effortless, and the overall difference in air quality was noticeable within hours. The air feels fresher, cleaner, and lighter, even with ongoing renovation work. I also really appreciate that it has a washable filter, which makes maintenance simple and cost-effective over time. It’s quiet, efficient, and does exactly what it promises without any hassle. Plus like the first unit it has a receptacle for adding essential oils to the the air.After trying several brands over the years, I can honestly say Kanka stands out for both quality and performance. In my personal opinion, if you’re dealing with dust, odors, or just want to breathe cleaner air, this one’s a smart investment. Highly recommended!
Chat –
Excellent product
First off, the delivery was fast, the packaging was intact. I was excited to receive the item and truly did not disappoint. Very quick assembly is needed to complete. First, remove the plastic of the 3 stage air filter at the front and at the back. Clip the legs at the bottom, attach the charger at the port, and turn ON. Easy!Here is a bit more info. Air is sucked in thru the front and back of the item, which then go thru a 3 stage filtration, Yes, 3 stage it is!, Air is then vented out on the side. The machine has digital functions, with 4 mode settings. I like that it has a small filter on the side, to absorb my favorite scent to make my room smell good and clean. The display has a function to tell when the filters are dirty and will need cleaning. When turned ON, it is very powerful yet very quiet.This is really a great product, small and light enough to be moved from one place to another, yet effective and efficient to perform what I bought it for.This may be a great present for any occasion. Love, love this!
jch85 –
Cleaner Air Every Day
The KNKA Air Purifier has been a great addition to my home. It’s AHAM Verified, so I trust the performance, and the high CADR ratings really do make the air feel cleaner fast. The dual air intakes and outlets help it refresh large rooms easily, and the dual 3-stage filters do a great job catching dust, pet hair, and odors. I especially like the PET Mode, which quickly clears pet dander and smell, and ECO Mode, which saves energy by turning off when the air is already clean. The different modes and quiet Sleep Mode make it easy to use any time of day, and the real-time air quality display is simple to understand. Maintenance is also easy with the filter reminder. Overall, it’s a powerful, easy-to-use purifier that works well in big spaces and keeps the air feeling fresh.
CGJ –
Compact and quiet
This seems like a really nice air purifier. I like the design—it has a clean look that blends right in with my living room instead of sticking out like a big plastic appliance. It is surprisingly small for how much area it covers. I don’t have any indoor pets, but I would think for someone who has a dog or cat that sheds. This would be a huge help in keeping the air clean and the dust down. The sleep function is nice and I like that it comes with a double filter. Overall, it’s simple, quiet, and fits naturally into the home.
Baystater –
Great, lightweight air purifier
This was extremely easy to set up…just attach the legs, connect the power cord, and it’s ready to go! The touch controls are intuitive. It’s lightweight, so I can easily move it from one room to another. It displays the air quality using the AQI scale, so in addition to purifying the air, it can be used to measure air quality in a space that you suspect to be of poor air quality. It runs at a very low noise level. It has 2 modes..Economy and Pet, with Pet being the higher power use mode, that purifies the air more quickly, with Pet presumably referring to a room full of pet hair. It lives up to its description on Amazon. I’m very satisfied with it and I recommend it.