There are many ways to improve the air quality inside a home. Air filters are the most common, and in many situations all a house will need to remove the airborne contaminants floating through it is a professionally installed set of filters.
But filters have limitations. The more powerful filters that can stop small allergens, bacteria, viruses, and other microbes are usually a bad idea for a house. These filters have such thick weaves that they will cut off the airflow from a residential HVAC system—and that means no comfort and higher bills.
