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(ARA) – Whether in a home or in a commercial building, the heating, ventilation and air conditioning (HVAC) system is crucial to ensure a comfortable temperature, fresh airflow, and an overall healthy indoor environment. But over time, these systems can get dirty or damaged, reducing indoor air quality and efficiency, hitting your health and energy bill hard.

Here’s what you need to know:

Filtration IssuesLow-efficiency filters, lack of a filter replacement program, and improperly sized filters can all allow particles and debris to flow into a home or building. The age of the system is also a factor.

Duct Work ContaminationOne of the most underreported problems in HVAC system maintenance is the deterioration of the insulation duct liner. It is estimated that more than 90 percent of HVAC systems installed over 10 years will have some level of insulation deterioration.

Dirty Evaporator CoilOver time, evaporator coils become matted with dust and dirt, which insulates the coil and significantly reduces the system’s ability to cool the air. This system will work longer and harder and energy costs will increase.

Cleaning your HVAC system will improve indoor air quality, air flow, efficiency and thermal comfort. A proper cleaning includes the elimination of all visible debris and particles from all components of a ventilation system. The National Air Duct Cleaners Association (NADCA) has published an internationally recognized standard that specifies requirements for proper cleaning. For more information visit

Caption 1: Photo provided courtesy of Lloyds Systems LLC (

Courtesy of ARAcontent