Decibel Cancellation Technology

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HiSo Air Purifiers utilize Decibel Cancellation™ Technology, allowing the use of less dense filters. Charged particles adhere more easily, reducing the need for high air pressure. This results in cleaner air at lower fan speeds, making our purifiers quieter and more energy-efficient.

Quiet Air Purification Performance

HiSo Air’s Decibel Cancellation™ Technology reduces noise by 5-10 dB while delivering a high Clean Air Delivery Rate (CADR) with whisper-silent operation. Our air purifiers are so quiet that you can sleep next to them. Sometimes, you might even want to check whether it is working because there is almost no noise.

No other air purifiers match our performance across so many parameters simultaneously.

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Leading in Silent Purification

HisoAir is the only factory with CNAS-approved Air Flow Rate & Pressure Measurement Apparatus and the first 80m³ CADR testing chamber in China. This allows us to achieve a noise level of 44dB at an air volume of 1000m³/h, making our Quiet Air Purifiers a reality. Our R&D team has conducted extensive tests on materials, structure, frame, and fan placement to achieve this low noise level. We proudly say that no one else on the market can match our quiet performance.

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Silent Air Duct Design

Our advanced dual-sided air inlet and single-sided outlet design doubles the air volume, ensuring high CADR performance even at lower motor speeds.

Noise Reduction Material

We use premium noise-reducing materials around the motor, reducing noise by 10-15dB compared to other air purifiers.

Wind Turbine Technology

Our forward-lean centrifugal blower is smaller and quieter. It runs at moderate speeds, ensuring low noise and high efficiency.

We use Forward-lean type centrifugal blower, which is smaller andless noisy. The motor doesn’t run to the limit, to keep a moderatespeed and low noise.