KNKA Air Purifier for Home Bedroom Large Room Up to 1,695 Ft² in 1 Hr, HEPA Air Cleaner with Washable Pre-Filter, AHAM VERIFIDE, AQI Display, ECO Mode, Pet Mode for Pets, Dust, Pollen, APH4000, Black
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Availability:
Only 5 left in stock, order soon!
Arrives
Thursday, Jun 11
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Color: Black
Features
- 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. It refreshes the air 4.8 times per hour in rooms up to 350 ft2, reaching up to 80% purification efficiency, while still delivering 1 full air refresh per hour in larger spaces up to 1695 ft2 with about 45% efficiency, helping maintain cleaner, fresher air throughout your home.
- 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 filters 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.
Product Dimensions : 8.15 x 12.36 x 17.09 inches; 9.68 Pounds
Item model number : APH4000
Date First Available : December 26, 2025
Best Sellers Rank: #686 in Home & Kitchen (See Top 100 in Home & Kitchen) #3 in HEPA Filter Air Purifiers
#3 in HEPA Filter Air Purifiers:
Customer Reviews: 4.8 4.8 out of 5 stars (2,234)
Power Source: ac_dc
Control Method: Touch
Filter Type: 3-Stage Filter
Floor Area: 350 Square Feet
Noise Level: 24 Decibels
Particle Retention Size: 0.3 Micron
Controller Type: Touch
Wattage: 45 watts
Contaminant Filtration Capability: dust, odors, pet_dander, pet_hair, pollen
Special Features: AQI Display, Dual 3-Stage Filters, PET & ECO & AUTO & SLEEP Mode, Washable Pre-Filter
Filter Class: HEPA and Activated Carbon
Brand Name: KNKA
Model Number: APH4000
UPC: 754175826438
Warranty Description: 2-Year Warranty
Part Number: 002
Included Components: 1 x Air Purifier, 2 x 3-Stage Original Filter (Pre-Installed), 1 x User Manual
Unit Count: 1.0 Count
Item Dimensions D x W x H: 8.15"D x 12.36"W x 17.09"H
Item Weight: 9.68 Pounds
Specification Met: CARB Certified, DOE Certified, ETL Certified, FCC Certified
Color: Black
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Jun 11
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Black
This is such a great machine. It's quiet, it blows clean air, it's easy to use, and the lights are not too bright. My mom lives in an old apartment with swamp coolers instead of a/c. It always smelled dank and musty, and it aggravated her cough. After just a few days of using this machine with it reaching green air levels, it's not as musty in her apartment and she's breathing better. I may actually get this for my house, it works so well.
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Reviewed in the United States on May 3, 2026 by RoxyLeigh
Color: White
Great air purifier. We've got 6 cats and 2 Great Danes - so our house is full of fur & smells. This air purifier works really well, we have one in the main living space and one in the primary bedroom both set to Auto so they adjust automatically as needed. They've made a big difference in the air quality in our house. The biggest plus on this model is that you can turn off all of the lights on the control panel so you can use it in your bedroom without having it light everything up. It's quiet too, when it kicks up to high it's a little louder but even them it's not very loud.
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Reviewed in the United States on May 12, 2026 by Donna
Color: White
This air purifier works very well. It does not make a loud noise when on. I like how easy it was to set up and love how nice it looks. The replacement filters are affordable thats why I bought it. My room stays smelling clean and the air is fresh. I am loving it
Reviewed in the United States on May 25, 2026 Reviewed in the United States on May 25, 2026 by lady castaneda
Color: Black
This is a small but mighty air purifier. It really moves the air in the room and I can feel the difference in the air quality. I have 3 dogs and this device does a good job of keeping the air feeling and smelling clean. Well worth it for the price. It’s pretty quiet in eco mode, but when it kicks on into overdrive you can really hear it. Doesn’t bother me much though.
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Reviewed in the United States on May 28, 2026 by Faisal piracha
Color: Black
I’ve owned this air filter for 3 months now and I am very satisfied with its performance. The bright particle counter display along with the associated colors for air quality are very informative. I live in an older house with hardwood floors in every room and this filter has made a huge difference in overall air quality. The amount of dusting and sweeping I need to do is significantly reduced. The unit is quiet and sleep mode turns off all of the lights while the unit runs through the night. It’s very easy to clean and install new filters as well. Does everything I wanted, so it’s 5 stars for me.
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Reviewed in the United States on May 25, 2026 Reviewed in the United States on May 25, 2026 by Amazon Customer
Color: White
It definitely works good. I have 3 cats with lots of hair. Put the purifier on pet mode to help get rid of their hair and dander. Cleans and freshens the air. It is very quiet.
Reviewed in the United States on May 14, 2026 by Don’t get it! It don’t erase AT ALL.
Color: White
Not only was this so easy to put together, but it is INCREDIBLY high quality. The breath ability in my home air was INSTANT. The fan settings are perfect, it’s compact enough to fit almost anywhere, it runs quiet and has seemed to really control the dust in my home. Love it!
Reviewed in the United States on May 7, 2026 by Tamara Krysten
Color: White
We just moved to a new place with a lot of desert and dogs, meaning I needed a good air purifier that could handle both dust and dog hair. Prior to receiving my KNKA purifier, dust was settling on my furniture by the end of the day, not to mention the dog hair and dander. I received my unit 4 days ago, set it up in a matter of minutes and have not seen the dust layer since. The purifier came with easy, step by step instructions and has several modes to accommodate daily activities (kids and dogs coming and going in and out all day), using a higher speed during the busy times of day. The display shows air quality, has multiple fan speeds, has a Pet circulating feature, a timer and the display can be on during the day and dimmed or turned off at night if not needed. I keep the unit on 24 hours per day, adjusting the fan speeds as needed. Like any fan, it is louder when on high but not enough to draw attention or distract. So, while I've only had the KNKA Air Purifier for a few days, I am very impressed and would recommend to anyone looking for a solution to the dust and dog hair film that seems to settle on everything. It works!!
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Reviewed in the United States on May 6, 2026 by Amazon Customer