Purifies rooms up to 140m² 
Perfect for large environments such as large offices, restaurants, classrooms, waiting rooms, salons and retail shops.

8 Filter both sides Air Cleaning System with UVC sterilisation
A total of 8 filters installed on both sides make air cleaner even more powerful. Completely remove not only ultrafine dust, airborne viruses but also bacteria, bad living conditions, germs and harmful substances (ammonia, hydrogen sulfide, acids, etc)

Ventilation Alarm
Alerts the user to high concentration of CO2 in the room

Real-time display of air quality
Check air quality at a glance by the color of LED with the dust sensor able to detect PM 2.5 (ultrafine particle)

Both sides suction, Multiple discharge structure
Air holes placed on both sides of WHA-400 purify the air by absorbing polluted air in the room, including ultrafine particle.

Smart features
Useful convenient and smart features like automatic air volume control, timer setting, sleep mode, etc.