Hope for healthier indoors Faced with the COVID-19 pandemic, Bob McGreevy, a Professional Engineer with over 40 years of HVAC experience, found himself looking for ways to use his expertise to help safeguard his family from the coronavirus. He turned to an HVAC technology that he has recommended to the clients of his commercial engineering firm for years - needlepoint bipolar ionization (NPBI) air cleaners. As the pandemic persisted, the importance of healthy indoor air quality grew. After installing air cleaners in their own homes, the McGreevy family noticed a significant improvement in indoor air quality, and their health and wellbeing improved as a result.