 Moodys Investors Service Moodys assigned a Baa3 rating to Lennox International Inc.s Lennox amended and extended 750 million senior unsecured revolving credit facility. All other ratings of Lennox remain unchanged. The extension of Lennoxs revolving credit facility to August 2022 from August 2021, which closed on July 30, 2020, is credit positive as it improves the companys liquidity and debt maturity profile. 