According to the National Air Duct Cleaners Association (NADCA), in a typical six-room home, up to 40 pounds of dust is created annually through everyday living. Normal day-to-day living generates contaminants and air pollutants, such as dander, dust, and chemicals. These contaminants are pulled into the HVAC system and re-circulated 5 to 7 times per day, on average. Over time, this re-circulation causes a build-up of contaminants in the duct work.
While dirty air ducts don’t necessarily mean unhealthy air in your home, school or workplace, they may be contributing to larger health issues or harboring contaminants that could cause serious problems for people with respiratory health conditions, autoimmune disorders or some environmental allergies.
Furthermore, according to the U.S. Department of Energy, 25 to 40 percent of the energy used for heating or cooling a home is wasted. Contaminants in the heating and cooling system cause it to work harder and shorten the life of your system. Although filters are used, the heating and cooling system still gets dirty through normal use. When an HVAC system is clean, it doesn’t have to work as hard to maintain the temperature you desire. As a result, less energy is used, leading to improved cost-effectiveness.
The Consumer Product Safety Commission (CPSC) estimates that 15,000 fires occur each year due to obstructed airflow due to lint buildup in consumer clothes dryers. The CPSC recommends cleaning the dryer vent and exhaust duct periodically to reduce the risk of fires. In addition to making your dryer safer, regular dryer vent cleanings will improve the energy efficiency of your dryer too.
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