According to industry experts, more than 70 percent of the indoor air quality (IAQ) issues in a home are directly related to its HVAC system. Common indoor pollutants include hazardous volatile organic compounds (VOCs), biological contaminants and airborne particles. All of these pollutants are known to impact the health and well-being of it's residents, but the particles degrading your indoor air quality can adversely affect HVAC equipment too.
How Indoor Air Quality Affects the HVAC System in Your Home
The particulate pollutants circulating through your HVAC system come from a variety of sources. Household dust drawn in through return ducts can contain a mixture of plant pollen, soot, skin cells, pet dander, fabric fibers, hair, smoke and other minute particles. If your ductwork isn't properly sealed and it's routed through the attic and other unfinished areas, insect parts, pest droppings, bits of insulation and other contaminants can infiltrate the HVAC system as well. If these particles aren't stopped by the air filter, they can affect the energy efficiency and longevity of key HVAC system components including:
- Indoor evaporator coil - A buildup of dirt on the cooling coil affects its ability to transfer heat. This insulating layer causes the coil to ice up, eroding its efficiency and cooling capabilities. A dirty coil also increases the system's internal operating pressure and temperature. Over time, this deteriorates the compressor lubricant and can lead to a premature failure.
- Blower motor - When dirt and dust in the system accumulate on the blower components, it puts extra strain on the motor, causing it to overheat. The added wear can reduce the motor's useful life span, and overheating creates a fire hazard.
- Furnace heat exchanger - If your indoor air supply is polluted with large amounts of particles during the heating season that the air filter can't handle, essential airflow becomes restricted. A lack of adequate airflow puts undue wear on the heat exchanger and can shorten its expected service life.
For more information about how indoor air quality affects the HVAC system in your Tallahassee, Havana or Quincy area home, contact us today at Air Control Heating & Cooling.
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