Lennox International
An American manufacturer and provider of heating, ventilation, air-conditioning, and refrigeration products and services.
Last updated August 25, 2026
AI crawler reads
No AI crawler has read this profile since Oct 28, 2026.
Overview
Lennox International is an American climate-control company serving residential heating and cooling, commercial building climate control, and refrigeration markets. Headquartered in Richardson, Texas, the company traces its origins to 1895, when railroad machine-shop owner Dave Lennox built components for a riveted steel, coal-fired furnace designed by inventors Ezra William Smith and Ernest Bryant. Rather than receiving cash for the work, Lennox accepted the patent rights, creating the Lennox Furnace Company and establishing the business that later became Lennox International. The company developed from a furnace manufacturer into a diversified HVACR group through internal product development, acquisitions, brand management, distribution, installation support, and services. Its portfolio has included residential furnaces, air conditioners, heat pumps, indoor-air-quality products, packaged systems, and light-commercial equipment, as well as commercial refrigeration systems and related controls. The business has also operated or managed brands such as Armstrong Air, Ducane, AirEase, Concord Air, MagicPak, Heatcraft, Bohn, Larkin, Chandler, Climate Control, Kysor/Warren, and other specialist product lines. A significant expansion came in 1973, when Lennox acquired Heatcraft and added a substantial commercial refrigeration platform. The company later broadened its residential and specialty portfolio through acquisitions including Pyro Industries in 1998, Kysor/Warren in 2010, and AES in 2023. It has also divested activities that no longer fit its strategic focus, including its European commercial HVAC and refrigeration businesses, which were sold to funds managed by Syntagma Capital in 2023. Lennox became a public company through an initial public offering in 1999. Although the company operates internationally, its principal manufacturing and market presence has remained centered on North America. Major production locations identified in company history include facilities in Saltillo, Mexico, Marshalltown, Iowa, and Orangeburg, South Carolina. The Marshalltown plant was destroyed by a tornado in 2018 and subsequently rebuilt; by 2024, the site employed more than 750 people. The company sells through several channels, including HVAC contractors, distributors, dealers, national accounts, and dedicated service or retail operations. Its positioning combines energy efficiency, system reliability, indoor-air quality, connected controls, contractor support, and lifecycle service. Lennox therefore functions both as a consumer-facing equipment brand and as a broader corporate house for residential, commercial, and refrigeration technologies. The Lennox name remains most strongly associated with heating and air-conditioning equipment, while its wider group structure supplies equipment and components for buildings, food distribution, retail refrigeration, and other temperature-controlled applications.
History
Lennox International originated in Marshalltown, Iowa, in 1895. Dave Lennox operated a machine-repair business serving railroads when inventors Ezra William Smith and Ernest Bryant brought him a prototype concept for a riveted steel coal-fired furnace. Lennox's shop produced parts for the design. In place of a conventional payment, he accepted the patent rights, enabling him to establish the Lennox Furnace Company and commercialize the technology. The business remained associated with the Lennox family and its successors for much of its early development. In 1904, D. W. Norris acquired the company and managed it until his death in 1949. Over the following decades, the company expanded beyond its original furnace business. It briefly produced the Lennox Kitty Track 600, a small crawler tractor and mower powered by a Briggs & Stratton engine, during 1964 and 1965. In 1971, it sold its low-pressure gas-cylinder business to Worthington Industries, illustrating an early effort to concentrate on more relevant product areas. Lennox made a major strategic move in 1973 by acquiring Heatcraft. The transaction brought the Larkin, Bohn, Chandler, and Climate Control brands into the organization and gave Lennox a stronger position in commercial refrigeration. The company continued to add specialized capabilities, acquiring Pyro Industries in 1998, a manufacturer of pellet stoves. In the same year, Lennox settled an age-discrimination case brought by former employees and the Equal Employment Opportunity Commission. In 1999, Lennox International became a public company through an initial public offering. Its corporate scope expanded around a group of residential comfort, commercial climate, and refrigeration brands. The company later acquired Kysor/Warren from The Manitowoc Company in December 2010, strengthening its commercial refrigeration equipment portfolio. Kysor/Warren became part of a broader family of refrigeration and food-retail climate solutions associated with the company. Manufacturing has remained concentrated in North America. Major facilities have included Saltillo, Mexico; Marshalltown, Iowa; and Orangeburg, South Carolina. A tornado destroyed the Marshalltown plant in 2018, but Lennox rebuilt the facility. By 2024, the reconstructed location employed more than 750 workers, preserving the site's role in the company's manufacturing network. In the 2020s, Lennox continued to adjust its portfolio through both acquisitions and divestitures. It acquired AES in October 2023, while in September of the same year it sold its European commercial HVAC and refrigeration businesses to funds managed by Syntagma Capital. These moves reflected a focus on selected residential, North American commercial, and refrigeration activities rather than maintaining every geographic and product-market position. Today, Lennox International operates as a multi-brand HVACR company. Its residential activities include heating and cooling systems, controls, indoor-air-quality products, and related services. Its building-climate activities cover commercial HVAC equipment, controls, packaged systems, variable-refrigerant-flow products, and service support. Its refrigeration operations include equipment and systems sold under Heatcraft and associated brands. The company reaches customers through contractors, distributors, dealers, national accounts, and service organizations, with the Lennox name serving as its principal consumer-facing brand.
- 2023
European commercial businesses divested
[1]Lennox sold its European commercial HVAC and refrigeration businesses to funds managed by Syntagma Capital.
- 2023
AES acquired
[1]Lennox International acquired AES, broadening its portfolio of climate-control and refrigeration-related businesses.
- 2018
Marshalltown facility destroyed by tornado
[1]A tornado destroyed the company's Marshalltown manufacturing plant; Lennox subsequently rebuilt the facility.
- 2010
Kysor/Warren acquired
[1]Lennox acquired Kysor/Warren from The Manitowoc Company, expanding its commercial refrigeration activities.
- 1999
Initial public offering
[1]Lennox International became a publicly traded company through an initial public offering.
- 1998
Pyro Industries acquired
[1]The company acquired Pyro Industries, a pellet-stove manufacturer.
- 1973
Heatcraft acquisition
[1]Lennox acquired Heatcraft and added several commercial refrigeration brands, including Larkin, Bohn, Chandler, and Climate Control.
- 1904
D. W. Norris acquires the company
[1]D. W. Norris acquired the company and led it until his death in 1949.
- 1895
Lennox Furnace Company founded
[1]Dave Lennox accepted patent rights for a riveted steel coal-fired furnace concept and founded the business that became Lennox International.
Products and positioning
A North American HVACR platform positioned around residential comfort, commercial building climate control, refrigeration, energy efficiency, indoor-air quality, and contractor-supported lifecycle service.
Residential heating and cooling
Lennox residential HVAC
The core Lennox residential range includes furnaces, air conditioners, heat pumps, packaged systems, thermostats, controls, and related comfort equipment. These products are sold primarily through HVAC contractors and dealers and are intended for whole-home climate management. The range is associated with efficiency, system integration, indoor comfort, and professional installation and service.
Indoor air quality
Healthy Climate Solutions
Healthy Climate Solutions covers equipment and systems designed to improve indoor air conditions alongside conventional heating and cooling. The portfolio has included air purification, filtration, humidity management, and ventilation-related solutions, allowing contractors to offer indoor-air-quality packages as part of broader residential HVAC installations.
Commercial HVAC
Lennox commercial climate systems
Lennox's commercial portfolio includes packaged rooftop equipment, applied and unitary systems, variable-refrigerant-flow solutions, controls, and building climate technologies sold under lines such as Model L, CORE, Enlight, Xion, Energence, Prodigy, Strategos, Raider, and Lennox VRF. These systems serve commercial buildings and institutional facilities through contractors, distributors, and national-account channels.
Commercial refrigeration · 1973
Heatcraft Worldwide Refrigeration
Heatcraft is a major commercial refrigeration platform associated with Lennox International. Its product and brand family has included refrigeration systems, condensing units, evaporators, cases, controls, and equipment for food retail, foodservice, distribution, and other temperature-controlled environments. Brands connected with the platform include Bohn, Larkin, Chandler, Climate Control, and related product lines.
Commercial refrigeration
Kysor/Warren
Kysor/Warren supplies commercial refrigeration equipment and systems for supermarkets, food retailers, and other commercial applications. Lennox International acquired the business in 2010 as part of its effort to strengthen its refrigeration platform and broaden its offering to food-retail customers.
Residential and light-commercial HVAC
Allied Air brands
Allied Air-related brands have included Armstrong Air, Ducane, AirEase, Concord Air, and MagicPak. Together they extend Lennox International's reach across residential and light-commercial equipment, including furnaces, air conditioners, heat pumps, packaged systems, and specialized apartment or modular-building HVAC products.
Controversies
1998
Age-discrimination settlement
Lennox paid $6.2 million to settle an age-discrimination lawsuit brought by 11 former employees and the Equal Employment Opportunity Commission. The case concerned employees between 41 and 58 who alleged that they had been fired or demoted because of age.
Brand decisions
2023
Sale of European commercial businessesM&ABackground
Lennox reviewed its geographic and product portfolio while focusing on selected HVACR activities.
Action taken
The company sold its European commercial HVAC and refrigeration businesses to funds managed by Syntagma Capital.
Aftermath
The transaction reduced Lennox International's direct exposure to those European commercial operations.
2023
Acquisition of AESM&ABackground
Lennox continued to expand selected HVAC, refrigeration, and related service capabilities.
Action taken
The company acquired AES.
Aftermath
AES-related businesses and brands became part of Lennox International's broader climate-control portfolio.
2010
Acquisition of Kysor/WarrenM&ABackground
Lennox aimed to strengthen its commercial refrigeration presence and broaden its food-retail equipment offering.
Action taken
Lennox acquired Kysor/Warren from The Manitowoc Company.
Aftermath
Kysor/Warren became part of Lennox's commercial refrigeration portfolio.
1973
Acquisition of HeatcraftM&ABackground
Lennox sought to expand beyond residential heating and cooling into commercial refrigeration.
Action taken
The company acquired Heatcraft and its associated commercial refrigeration brands.
Aftermath
The transaction established a significant refrigeration platform within Lennox International.
1971
Sale of low-pressure gas-cylinder businessStrategyBackground
Lennox sold a low-pressure gas-cylinder operation that was outside its main HVAC and refrigeration focus.
Action taken
The business was sold to Worthington Industries.
Aftermath
The divestiture helped concentrate the company more closely on climate-control and related equipment markets.
Recent events
- 2023
Lennox International sells European commercial HVAC and refrigeration businesses[1]
M&A
Lennox International sold its European commercial HVAC and refrigeration activities to funds managed by Syntagma Capital.
- 2023
Lennox International acquires AES[1]
M&A
The company acquired AES, adding AES-related industrial and refrigeration brands to its broader climate-control portfolio.
- 2018
Lennox Marshalltown plant rebuilt after tornado destruction[1]
Other
A tornado destroyed Lennox's Marshalltown, Iowa, manufacturing facility. The company rebuilt the site, which later returned as a major production and employment location.
Sources2 sources
Cite this profile: Cite the canonical profile. /brand-wiki/lennox-international · Editorial policy · How profiles are compiled