The system stays on for a period up to 12 hours on. The auto feature can be utilized to keep the system running continuously. The machine is very effective in keeping the air in the room with a clean smell..
A very quiet air purifier which we purchased along with a BreatheSmart 45i. We keep the 75i in our main living area and found that it does a fantastic job of eliminating food cooking odors. We're so happy with both that we decided to purchase two more 45i's for our home.
This air purifier works well in my 1 dog, 3 cat home. I have 3 purifiers with pet filters. One in living room, den, and a bedroom. They do a great job getting rid of dust and odor The air smells and feels cleaner and I am dusting the furniture a lot less! I am impressed! I am going to purchase 2 more for our upstairs bedrooms.
Best purchase this year. Had it 4 days and my wife said, "The air smells clean and lighter." I also had noticed, even though the weather had gotten colder, the heater wasn't running as much. And very quite, not noisy like a humidifier, and no clean up. When it arrived, pulled it out of the box, plugged it in, and let it do it's own thing. I tell all my friends about it.
It works very well. It is reasonably quiet. Nice controls and indicates the level of air particles well. I have this one in my living room. I'm happy with the purchase and considering getting another one maybe a smaller one for my rec room