Ture h13 hepa compared with traditional air purifiers， ours ensures that you will not experience oxygen deficiency in a closed environment， allowing you to provide fresh air without opening windows， perfectly preventing outdoor pollution such as pollen， dust， and noise from entering the room

2 in 1 filter brings 100% fresh air from outdoor instead of mixing return exhaled air， and it equipped with a double-layer filter system: 1st layer coarse-efficiency filter can intercept large particle pollutants such as hair， pollen， pm10 and etc， it's washable and reusable; 2nd layer high efficiency h13 grade hepa filter can filter more than 999% pm25 particles and pollutants， easily achieve "indoor air is 100 times cleaner than outdoor"， and give you "visible" good air quality

Energy conservation used true 2-way flow design and internal energy-saving transformation， lower energy consumption the washable coarse-efficiency filter only needs to be cleaned every 1-3 months without replacement， the high-efficiency filter can be used for 6-12 months then replacing， the full heat recovery exchanger could recover up to 70% eliminates energy waste， all these only one kilowatt-hour of electricity is required for 3 days， with ultra-low power consumption

Continuous fresh air used true 2-way flow design and internal energy-saving transformation， lower energy consumption， stronger efficiency and more comfortable the washable coarse-efficiency filter only needs to be cleaned every 1-3 months without replacement， the high-efficiency filter can be used for 6-12 months then replacing， the full heat recovery exchanger could recover up to 70% eliminates energy waste， all these only one kilowatt-hour of electricity is required for 3 days， with ultra-low power consumption

Formaldehyde removal it only takes 60 minutes to reduce formaldehyde by 964%， and the formaldehyde content is below 01ppm after 60 minutes of startup

Attention: this product requires a hole with a diameter of approximately 63 inches to be punched on the wall before purchasing， please consider whether your wall is convenient for punching， or consult us we have a branch in the united states and can assist you actually， you could refer to the installation guide video in our listing， if there are any problem， please feel free to let us know， thank you!

Please refer to the instruction manual before use， please contact us (sfrankie@aoutkehomecom) with any issues so that we can resolve them according to your feedback!