Even though you use filters in your HVAC system to clean the air in your home, there are particles that can get pass this barrier and get carried throughout your home.
Your heating and cooling system can be a breeding ground for bacteria, viruses, mold and other particles that can make you sick. The cooling coils, drain pans, and inside the ductwork are a few common places where these contaminants can grow. Not only, can this growth affect your health, but it can reduce the efficiency of the system. The buildup of mold, viruses, and bacteria can block the air flow, causing the system to work harder to cool and circulate the air.