Dave Lennox builds and markets the industry’s first riveted-steel furnace.
Lennox establishes a one-step distribution network, selling directly to installing contractors.
Lennox expands for the first time, building a warehouse in Syracuse, New York. Two years later a factory is added.
Lennox pioneers the introduction of a forced-air furnace for residential heating.
Lennox retools its factories to support the World War II effort.
Lennox establishes operations in Canada.
Lennox expands its product line with the introduction of residential central air-conditioning systems.
Lennox establishes an international division with a facility in Basingstoke, England and sales offices and warehouses in Holland and Germany.
Lennox develops and manufactures the Duracurve heat exchanger, reducing noise problems in gas furnaces.
Lennox introduces packaged multi-zone units for commercial heating and cooling.
“Dave Lennox” appears for the first time in a Lennox advertising campaign.
Lennox increases air conditioning efficiency with the development of the two-speed hermetic compressor.
Lennox develops and manufactures the industry’s first high-efficiency gas furnace.
Lennox International Inc. is established as the parent company for Lennox Industries Inc. and future acquisitions.
Lennox International expands into the commercial refrigeration and heat transfer markets with the establishment of Heatcraft Inc.
Heatcraft implements a 48-hour coil replacement program for commercial air conditioning systems.
Lennox International expands into two-step distribution of residential heating and cooling equipment with the acquisition of Armstrong Air Conditioning Inc.
Lennox is the first to manufacture and market a complete combination high-efficiency residential space/water heating system.
Lennox enters the hearth products market with the introduction of gas fireplaces.
Lennox Global Ltd. (LGL) is established to expand the company’s presence in worldwide commercial air conditioning, commercial refrigeration and heat transfer product markets.
Heatcraft develops Floating Tube and Thermoflex technology, significantly reducing leaks in air-cooled condensers and unit coolers used for commercial refrigeration.
Lennox begins factory configure-to-order for commercial air conditioning with the introduction of the L-series.
The Beacon Control System eases installation and maintenance of refrigeration system problems.
LGL enters into joint venture agreements in Europe and Latin America and makes acquisitions in Asia.
Lennox Industries begins to establish a retail distribution network offering full sales and service functions.
Lennox International completes an Initial Public Offering becoming a public company on July 28, 1999.
LII launches new corporate logo to reflect worldwide growth.
LII introduces HSX19, industry's quietest and most efficient air conditioner.
LII introduces G61V, industry's quietest gas furnace.
Lennox announces refinements to historic Lennox brand logo design.
Lennox introduces world’s first air conditioner rated at 20+ SEER for energy efficiency.
First fully integrated whole-house dehumidification system.
First comprehensive line of ozone-free residential indoor air quality products.
Lennox introduces SunSource™, the industry's first integrated solar-assisted residential heating & cooling system.
Lennox® introduces the industry's first commercial rooftop line to be rated at 17.0 SEER: the Energence™ commercial rooftop product line with the Prodigy™ unit controller and SmartWire™ system.
Lennox® introduces the industry's first system to harness solar power for heating, cooling and beyond, while sending any excess power back to the utility: the SunSource® Home Energy System.
Lennox® introduces the menu-driven icomfort Touch™ touchscreen thermostat.
Lennox International Completes Acquisition of Kysor-Warren.
Lennox introduces iComfort WiFi, the company’s first communicating touchscreen thermostat.