U.S.-based Madison IAQ LLC, a global provider of indoor air quality solutions, is issuing $715 million of debt to fund its $1.1 billion proposed acquisition of Big Ass Fans LLC (BAF). S&P Global Ratings anticipates the adjusted leverage will increase to more than 8x in 2021 before subsiding to the 6x-6.5x range in 2022, reflecting minimal cushion at the current rating. We revised our outlook on Madison IAQ to negative from stable and affirmed our 'B' issuer credit rating on the company. We also assigned our 'B' issue-level rating to the company's proposed incremental $715 million term loan due 2028. The negative outlook reflects elevated leverage in 2021 and the potential for a more aggressive financial policy with leverage being