Understanding How Your HVAC Affects IAQ

indoor air qualityBecause the majority of breaths you take every day are inside your own home, indoor air quality is vital. Today’s houses are more tightly air-sealed than ever. This conserves energy, but also allows airborne pollutants and irritants to concentrate—potentially to levels that may trigger allergies, illness or just annoyance.

Fortunately, you already have an important ally to support healthy indoor air quality: your HVAC system. Properly maintained, fully functional HVAC components provide more than just comfort control. The system’s also the first line of defense to keep the enclosed home environment free of accumulating airborne allergens and contaminants. Here are two ways it helps safeguard indoor air quality.

Continuous Filtration

As long as the HVAC system’s running, it’s filtering the air your breathe. The total air volume inside a typical house circulates through the system filter many times per day. This ongoing process removes many airborne particulates, both inorganic and organic. To ensure that you’re getting the most effective filtration:

  • Change the air filter monthly during the cooling season and at least every other month during the heating season. It’s an easy procedure and any HVAC service technician will be glad to show you how to do it yourself.
  • Purchase quality pleated polyester or cotton replacement filters. For maximum filtration with minimum airflow restriction, choose an air filter with a MERV (Minimum Efficiency Reporting Value) of 8 to 10. This removes airborne particulates down to a size of 1 to 3 microns.

Humidity Reduction

High indoor humidity activates mold growth. Active mold releases millions of microscopic airborne spores—a potential source of allergic reactions and even chronic illness if inhaled. Your air conditioner’s indoor evaporator coil extracts water vapor to keep relative humidity at 50% or less, the EPA-recommended level. Annual HVAC preventive maintenance by a qualified  professional includes inspecting and cleaning the evaporator coil—as well as checking refrigerant levels—to ensure optimum humidity extraction at the coil and effectively inhibit mold growth.

Concerned about indoor air quality? Ask Paitson Bros., serving Terre Haute resident since 1922, for more information about HVAC’s role in keeping the home environment both healthy and comfortable.

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    By Jeff Paitson
  • About Jeff

    Jeff Paitson Jeff Paitson is a third generation business owner who continues to run the business with the same values that have been passed down from previous generations since 1922.

    Jeff’s belief is that the business belongs to Jesus Christ; therefore 10 percent of the company’s profits go toward the Maryland Community Church.

    Jeff is a Terre Haute Chamber of Commerce member and in his spare time, he enjoys photography.
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  • About Ethan


    Ethan Ethan Rayburn is a lifelong resident of Terre Haute and a 2005 graduate of Purdue University.

    An Eagle Scout, Ethan spent four years as a non-profit executive with the Boy Scouts of America before joining Paitson Bros. as a comfort advisor and later General Manager. In that role, Ethan has brought a renewed enthusiasm for customer care, integrity, value, and service to Paitson Bros. Heating & Air Conditioning.

    Ethan enjoys singing and was a member of the Purdue Varsity Glee Club. He also enjoys playing and coaching soccer, spending time with his family and two young boys, and volunteering his time and resources with his church, Terre Haute First Baptist Church, which he has attended from a very young age.
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