KNKA Air Purifier HEPA for Large Rooms – AHAM Certified
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AHAM Certified HEPA Filtration
When it comes to indoor air quality, not all air purifiers deliver the same results. The KNKA APH4000 is AHAM Verified, meaning its performance is independently tested and certified by the Association of Home Appliance Manufacturers. With a Smoke and Dust CADR of 226 CFM and a Pollen CADR of 244 CFM, this purifier effectively clears allergens, particles, and odors from large spaces. It refreshes the air 4.8 times per hour in rooms up to 350 ft², and still delivers full air exchanges in spaces as large as 1,695 ft².
The three-stage dual filtration system does the heavy lifting. Each of the two filter cartridges contains a washable pre-filter for larger particles like pet hair, a True HEPA filter that captures microscopic allergens, and an activated carbon layer that neutralizes odors and volatile compounds. With dual front-and-back air intakes and dual side outlets, the engineering maximizes air circulation for faster, more efficient purification throughout the entire room.
Clean air instantly
Smart Modes and Whisper-Quiet Operation
The KNKA APH4000 is built for real-life use with multiple modes tailored to different situations. PET Mode boosts airflow specifically to handle pet hair, dander, and odors, refreshing the air in as little as 30 minutes. ECO Mode saves energy and extends filter life by entering standby when air quality is excellent, then automatically reactivating when needed. Sleep Mode reduces fan noise to just 22-24 dB – quieter than a library whisper – so you can run it overnight without any disturbance.
A built-in sensor continuously monitors indoor air quality and displays the AQI in real time using color-coded lights, giving you instant feedback on the air you breathe. The filter replacement indicator alerts you when a change is due, removing all guesswork from maintenance. With four fan speeds, Auto Mode, and a compact design that fits any room, the KNKA APH4000 is one of the most complete air purifiers available at this price point.
