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 office and commercial buildings, restaurants, retail centers, churches, schools, shopping malls, other retail and entertainment buildings, and institutional and other field-engineered applications. It also provides sales, installation, maintenance, and repair services under fixed-price contracts. The Refrigeration segment provides condensing units, unit coolers, fluid coolers, air cooled condensers, compressor racks, air handlers, and process chillers, as well as supermarket display cases and systems; and sells products for non-food and various industry applications, such as telecommunication, dehumidification, and medical applications. The company sells its products and services directly, as well as through distributors, company-owned parts and supplies stores, independent dealers, and installing contractors. It operates in the United States, Canada, and internationally. Lennox International Inc. was founded in 1895 and is headquartered in Richardson, Texas.