Lennox International Inc., through its subsidiaries, designs, manufactures, and markets climate control products for the heating, ventilation, air conditioning, and refrigeration markets. The company operates in three segments: Residential Heating & Cooling, Commercial Heating & Cooling, and Refrigeration. The Residential Heating & Cooling segment manufactures and markets a range of furnaces, air conditioners, heat pumps, packaged heating and cooling systems, indoor air quality equipment, replacement parts, and related products for residential replacement and new construction markets. The Commercial Heating & Cooling segment offers rooftop units, split system/air handler combinations, small package units, chillers, and fan coils for commercial buildings, shopping malls, other retail and entertainment buildings, institutional, and other field-engineered applications. This segment also provides sales, installation, maintenance, and repair services under fixed-price contracts. The Refrigeration segment offers condensing units, unit coolers, fluid coolers, air cooled condensers, air handlers, process chillers, controls, compressorized racks, and supermarket display cases and systems. The company sells its products and services directly, as well as through distributors, and company-owned parts and supplies stores. It operates in the United States, Canada, and internationally. Lennox International Inc. was founded in 1895 and is headquartered in Richardson, Texas.