I missed the lecture about air quality. When I guess of air pollution, that’s all outside. So when I l received about the attachion between Heating, Ventilation, & A/C equipment & the air the people I was with and I breathe inside, I was a bit stunned. Again, I just had no method there were concerns when it came to air quality. This assumption was based on the fact that people were always told to stay indoors with the smog was terrible when I lived in the city. And air pollution was the stuff coming out of exhaust pipes & factories. It was not something to worry about inside the house. Plus, there was an air filter that I changed each month that absolutely showed signs of dirt. So I just figured the Heating, Ventilation, & A/C equipment was cleaning the air. That’s not the case at all. To start, there are loads of things inside our homes that affect the air quality. There are so several synthetics, from carpet to furniture, that are giving off airborne contaminants. Then throw in the pollen, pet dander & all that comes to air quality that isn’t great. And that air filter I was decreasing each month was designed to catch the big stuff so it doesn’t hurt the Heating, Ventilation, & A/C unit. All the other stuff is getting blown around the loft when the Heating, Ventilation, & A/C unit kicks on. So the truly first thing I did was to upgrade the Heating, Ventilation, & A/C air filter to a HEPA filter. These HEPA filters unattach more than 99 percent of the airborne contaminants that attack our respiratory system. It’s made a tremendous difference as I save our currency to go all the way with a whole apartment whole-house air purifier.