Lennox International

Lennox International is a global climate control solutions company operating in the heating, ventilation, air conditioning and refrigeration markets across more than 70 countries. Founded in 1895 by inventor Dave Lennox in a machine shop in Marshalltown, Iowa, the company employs about 14,200 people and is listed on the New York Stock Exchange as LII. Its origins lie in the world's first riveted-steel furnace, built as a durable alternative to crack-prone cast-iron designs.

The business is organised around three areas. Home Comfort Solutions delivers premium residential HVAC equipment under the Lennox Residential brand. Building Climate Solutions covers commercial climate systems and refrigeration through Lennox Commercial and Heatcraft Refrigeration, including the Bohn, Larkin, Climate Control and Chandler brands. A third segment distributes HVAC components through LennoxPros, Duro Dyne and Supco, supported by digital tools for dealers and contractors.

Technical work spans forced-air heating and cooling systems, refrigeration, high-efficiency furnace design and energy performance. The company introduced residential forced-air heating in 1923 and the industry's first high-efficiency gas furnaces in 1973; current systems carry industry-leading SEER efficiency ratings. Manufacturing operates from sites in Iowa, South Carolina and Mexico.

Lennox International states core values of integrity, respect and excellence, and reports a sustained focus on sustainability and reducing the environmental impact of its products and operations.