They say that the key to having fantastic indoor air conditions is to keep your house clean, then well, while that is tploy that is not the only thing that is needed.
There are other things that various people do not think about.
One of which is having the air duct of your central heating and air conditioner method cleaned at least once per year! A entirely fantastic air duct cleaning is something that plays a sizable area in your indoor air conditions. I did not think this myself until I was told by an air quality expert that I had come to my home to test my indoor air conditions a few months ago. It had turned out that I had some entirely awful indoor air conditions which confused me. Since I consistently keep my house scrub and even have a professional maid maintenance come once a month to scrub my house. This was when they told myself and others about central heating and a/cs and their air duct being the key reason for my awful air quality. When I found this out I right away called the local heating and air conditioner supplier to schedule a fantastic hard air duct cleaning for my air ducts and everything related. I even had them scrub the outer portion of the air vents as well! Once this was all said and done, I called the air quality experts back to test my air quality once again. It was all good! So a easy air duct cleaning of my central heating and air conditioner method was all that was needed!