In this ASHRAE Journal article, research scientists from the New York State Department of Health determined that operating a corona discharge (sometimes labeled: ionizing, negative ion, bipolar ionizing, activated oxygen, mountain fresh air, etc.) causes an increase in indoor ozone concentration, ultrafine particulates, aldehydes and acetone. Consequently, they have decided these types of products cannot be used in schools in New York State.
Corey Duggin, a principal at TLC Engineering for Architecture, wrote this article in Consulting-Specifying Engineer Magazine about how he applied enVerid HLR modules using the Indoor Air Quality Procedure (IAQP) prescribed in ASHRAE Standard 62.1, resulting in much higher energy efficiency. Click here to see the article or download it using the Read More link: