...- Madison IAQ LLC grew its S&P Global Ratings-adjusted EBITDA meaningfully in the first half of 2023, which translated into S&P Global Ratings-adjusted leverage improving to 6.6x as of June 30, 2023, from 7.6x at the end of 2022. - We believe Madison IAQ will maintain the margin improvements it achieved over the past few quarters, and we forecast its 2023 year-end S&P Global Ratings-adjusted leverage will improve further toward the low- to mid-6x area, a level we believe aligns with a one-notch higher rating. - Therefore, we revised our outlook on Madison IAQ to positive from stable. - At the same time, we affirmed all ratings, including our 'B-' issuer credit rating. - The positive outlook reflects our forecast for continued, albeit decelerating, S&P Global Ratings-adjusted EBITDA growth in the second half of this year, translating to S&P Global Ratings-adjusted leverage improving toward the low- to mid-6x area at year-end and remaining solidly under 7x through 2024....