Typical homeowners may understand the value of indoor air quality (IAQ), but will leave contributing technical features, like structural design, kilowatt hours, heating and cooling loads, and blower-door testing to the professionals.

Most people spend about 90 percent of their time indoors, making the value of IEQ readily apparent. According to a 2019 study by the Joint Center for Housing Studies at Harvard University and the Farnsworth Group, 30 percent of all US households had concerns about potential health hazards in their homes when surveyed in 2018.

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