Lennox International Inc., founded in 1895 and headquartered in Richardson, Texas, United States, manufactures high-efficiency HVAC, refrigeration, and climate control systems for both residential and commercial markets. The company earns revenue from diversified product sales and comprehensive after-market services, supported by a robust distribution network. Under the leadership of CEO Edward J. Doherty since 2019, Lennox maintains an estimated 12% market share in North America by focusing on innovation and energy efficiency. Looking forward, the firm is investing in smart technology and sustainability initiatives while addressing challenges such as raw material cost fluctuations.