Sheet metal & Air Conditioning Contractors’ National Association

Indoor Air Quality

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Resources for JATCs - Residential HVAC

The International Training Institute (ITI) offers resources on residential HVAC courses
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ASHRAE's new residential IAQ guideline advises using high efficiency filters

Recent research shows that ultrafine particles are more hazardous to human health than originally thought. ASHRAE’s newly published 2015 version of the residential indoor air quality (IAQ) guideline suggests higher-efficiency filters should be used.
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