 DALLAS, June 9, 2021 PRNewswire -- Lennox International NYSE: LII, a global leader in the heating, air conditioning, and refrigeration markets, is revolutionizing the commercial HVAC industry by introducing the rooftop unit Ultimate Indoor Air Quality system as part of its Building Better Air initiative. With the ability to remove 99 of the virus that causes COVID-191 from the air2, Lennox has developed a rooftop unit that can help commercial businesses improve the health of their building. 