about us
  • 1895

    Dave Lennox builds and markets the industry’s first riveted-steel furnace.

  • 1904

    Lennox establishes a one-step distribution network, selling directly to installing contractors.

  • 1923

    Lennox expands for the first time, building a warehouse in Syracuse, New York. Two years later a factory is added.

  • 1935

    Lennox pioneers the introduction of a forced-air furnace for residential heating.

  • 1943

    Lennox retools its factories to support the World War II effort.

  • 1952

    Lennox establishes operations in Canada.
    Lennox expands its product line with the introduction of residential central air-conditioning systems.

  • 1960

    Lennox establishes an international division with a facility in Basingstoke, England and sales offices and warehouses in Holland and Germany.

  • 1964

    Lennox develops and manufactures the Duracurve heat exchanger, reducing noise problems in gas furnaces.

  • 1965

    Lennox introduces packaged multi-zone units for commercial heating and cooling.

  • 1972

    “Dave Lennox” appears for the first time in a Lennox advertising campaign.

  • 1973

    Lennox increases air conditioning efficiency with the development of the two-speed hermetic compressor.

  • 1982

    Lennox develops and manufactures the industry’s first high-efficiency gas furnace.

  • 1984

    Lennox International Inc. is established as the parent company for Lennox Industries Inc. and future acquisitions.

  • 1988

    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.

  • 1988

    Lennox International expands into two-step distribution of residential heating and cooling equipment with the acquisition of Armstrong Air Conditioning Inc.

  • 1994

    Lennox is the first to manufacture and market a complete combination high-efficiency residential space/water heating system.

  • 1994

    Lennox enters the hearth products market with the introduction of gas fireplaces.

  • 1995

    Lennox Global Ltd. (LGL) is established to expand the company’s presence in worldwide commercial air conditioning, commercial refrigeration and heat transfer product markets.

  • 1995

    Heatcraft develops Floating Tube and Thermoflex technology, significantly reducing leaks in air-cooled condensers and unit coolers used for commercial refrigeration.

  • 1995

    Lennox begins factory configure-to-order for commercial air conditioning with the introduction of the L-series.

  • 1996

    The Beacon Control System eases installation and maintenance of refrigeration system problems.

  • 1997

    LGL enters into joint venture agreements in Europe and Latin America and makes acquisitions in Asia.

  • 1998

    Lennox Industries begins to establish a retail distribution network offering full sales and service functions.

  • 1999

    Lennox International completes an Initial Public Offering becoming a public company on July 28, 1999.

  • 2002

    LII launches new corporate logo to reflect worldwide growth.

  • 2003

    LII introduces HSX19, industry's quietest and most efficient air conditioner.

  • 2003

    LII introduces G61V, industry's quietest gas furnace.

  • 2005

    Lennox announces refinements to historic Lennox brand logo design.

  • 2005

    Lennox introduces world’s first air conditioner rated at 20+ SEER for energy efficiency.

  • 2006

    First fully integrated whole-house dehumidification system.

  • 2007

    First comprehensive line of ozone-free residential indoor air quality products.

  • 2008

    Lennox introduces SunSource™, the industry's first integrated solar-assisted residential heating & cooling system.

  • 2009

    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.

  • 2010

    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.

  • 2010

    Lennox® introduces the menu-driven icomfort Touch™ touchscreen thermostat.

  • 2011

    Lennox International Completes Acquisition of Kysor-Warren.

  • 2012

    Lennox introduces iComfort WiFi, the company’s first communicating touchscreen thermostat.