Thanks, Kare, for the great info!!
I've not thought of an air filter system for the entire house before, and I will definitely look into this AspenAirInside product. When I moved to Phoenix from Dallas about a decade ago, I looked forward to what I assumed was the clean desert air. I was so surprised to find out how much pollution we have here. And what surprised me even more was the high prevalence of asthma in kids in our area, including, suddenly, two of my own kids.
So I really appreciate your post, as well as the smoke detector check reminder!!