How many square feet will this machine cover?
Hi there, this model is designed for maximum 3,000 square feet area. Fan speed and ozone output are both adjustable according to your room size.
This equipment can running in automatic mode?
Sorry, there is no auto mode with the machine. But when you turn on the power, the fan starts running, which means the HEPA filter keeps working. Besides, the UV light, anion and ozone are optional and adjustable.