Lennox International Inc. is a climate control solutions company that designs, manufactures, and markets products for heating, ventilation, air conditioning, and refrigeration. The company primarily serves the North American residential and commercial building markets, with a strong focus on the replacement channel as well as new construction needs. Its portfolio includes residential HVAC systems, commercial rooftop units, indoor air quality equipment, and refrigeration systems used in food retail, cold storage, and other temperature-sensitive applications. Lennox International operates through business segments centered on home comfort and building climate solutions, distributing products through a network of dealers, contractors, and commercial partners. Headquartered in Richardson, Texas, and founded in the United States, the company positions itself as a key player in maintaining energy-efficient, reliable indoor environments across homes, businesses, and industrial facilities.