We're very glad to have an Austin air filtration machine in our home, as with a change in winds smoke from the west Cascade fires has blanketed the east side now. Did a lot of research, Austin emerged as best of class. At around the cost of a new quality fly rod, your lungs will appreciate it if living in a smoke area. Even if you have a quality central HVAC system with electro-static filtration, UV, etc, this unit will take care of what's left. And if you don't, than this unit will make a huge difference.