According to the EPA indoor air can be 2 to 5 times more toxic when compared to outdoor air. The air you are breathing could be making you sick! Over the years buildings have been built where they are virtually air-tight. There are many volatile organic compounds, which are considered chemical contaminants, which can cause acute effects on the occupants of a building. Some examples of VOCs that are present in our daily lives are: benzene, ethylene glycol, formaldehyde, methylene chloride, etc. These can be things ranging from building materials, carpet, drapes, plywood, glues, personal care items such as perfume, hair spray, cleaning supplies, paints, etc.
"Molds, mildew, viruses, bacteria, pollen, animal dander, & house dust mites, are types of biological contaminants" which can be found in your air duct system. These can easily be breathed in by the building inhabitants , posing a huge health risk. Especially for people with asthma & other respiratory health problems. Air duct cleaning is essential to removing these potentially harmful & in some cases fatal contaminants from the air duct system. Therefore improving the indoor air quality, improving your ability to breathe easier & for your furnace to have improved air flow & work more efficiently.
Air ducts are on of the most neglected features during the heating & air conditioning maintenance process. Simply changing your air filter on a regular basis is not enough. In most cases when your air ducts are all ready dirty, the air filter only catches a small percent of the contaminants the rest just keeps recirculating through the air you are breathing. Once you have done a thorough cleaning of your air duct system & the contaminants have been removed, then your air filter can do a better job filtering & preventing the air ducts from continually circulating the dust & debris through the air. A thorough cleaning can also help improve the air flow, improve the performance & help boost the lifetime of your HVAC equipment.