Lennox International Inc.
Richardson, Texas HVAC manufacturer listed on the NYSE as LII, producing residential and commercial heating, cooling, and refrigeration systems under Lennox and related brands.
Company Type
public
Founded
1895
Headquarters
Richardson, Texas, USA
Stock
New York Stock Exchange: LII
Revenue
Approximately $5.2 billion (FY2025)
Employees
Approximately 13,000
Primary Market
United States
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About Lennox International Inc.
Is Lennox International publicly traded?
Yes. Lennox International trades on the New York Stock Exchange under the ticker LII.
Who owns Lennox?
Lennox International is a public company owned by institutional investors and other shareholders. Alok Maskara is CEO. There is no controlling owner.
Where is Lennox International headquartered?
Lennox International is headquartered in Richardson, Texas, a Dallas suburb. It was founded in Marshalltown, Iowa, in 1895.
What does Lennox International make?
The company makes residential furnaces, air conditioners, and heat pumps; commercial rooftop HVAC systems; and commercial refrigeration under the Lennox, Armstrong Air, Ducane, and Heatcraft brands.
How much revenue does Lennox make?
Lennox International reported approximately $5.2 billion in revenue for fiscal 2025, with operating margins among the strongest in the HVAC industry.
What is Lennox's competitive advantage?
Lennox's advantages are its premium, high-efficiency product positioning and its exclusive dealer distribution model, which together produce industry-leading margins and brand loyalty.
History of Lennox International Inc.
Dave Lennox founded the company in 1895 in Marshalltown, Iowa, to manufacture a patented riveted-steel furnace. It grew into a leading American furnace maker through the early 20th century, then added air conditioning after World War II and built the dealer network that defines it today.
The company went public on the NYSE in 1999. The modern portfolio assembled through acquisitions: Armstrong Air and Ducane for mid-tier residential products, Allied Air Enterprises for additional dealer distribution, and Heatcraft for commercial refrigeration.
Headquarters moved from Marshalltown to Richardson, Texas in the 1990s, reflecting the shift of U.S. manufacturing and population toward the South and Southwest.
Alok Maskara, who came from Pentair and Dover, became CEO in 2022 and drove operational improvements that delivered record revenue and profitability in 2024 and 2025. The 2025 industry transition to low-GWP refrigerants like R-454B added complexity but played to Lennox's premium, high-efficiency positioning.
Lennox International Inc. Sustainability & Ethics
Lennox publishes ESG reporting under its corporate responsibility framework, covering operational emissions, refrigerant transition, product efficiency, and safety. Product-level sustainability, high-SEER systems and low-GWP refrigerants, is the center of its environmental positioning.
The efficiency argument is commercially real: premium Lennox systems are among the most efficient residential HVAC products, and the company benefits directly from decarbonization policy. It is not B Corp certified.
Awards & Recognition
Lennox products receive top ratings in HVAC trade publications for efficiency and quiet operation, and the brand performs strongly in dealer satisfaction studies. The company has been recognized for manufacturing and workplace excellence.
Controversy, Regulation & Public Scrutiny
Lennox operates under continuous regulatory exposure on refrigerants, energy efficiency standards, and product safety, standard for HVAC. It has issued product recalls in past years for specific furnace and component safety issues through the CPSC process.
The 2025 refrigerant transition produced supply and cost pressure across the industry rather than a Lennox-specific controversy. Tariff exposure on Mexican manufacturing and imported components is an ongoing policy risk.
Brands Owned by Lennox International Inc.
Lennox International Inc. owns 1 brand in our database. Explore the ownership tree below — click categories to expand and see individual brands.
Lennox International Inc.
public · Founded 1895 · Richardson, Texas, USA
1
brands
Stock Information
Lennox International Inc. Ownership: Pros & Cons
Advantages
- +Premium brand and dealer channel produce industry-leading margins
- +High-efficiency portfolio aligned with electrification and decarbonization policy
- +Replacement-driven demand provides resilience
- +Disciplined management delivering record results under Maskara
Considerations
- -Premium price point limits volume and share potential
- -Dealer channel dependence is a concentration risk
- -Housing and weather cycles drive demand volatility
- -Refrigerant transition and tariffs create cost uncertainty
Frequently Asked Questions About Lennox International Inc.
Is Lennox International publicly traded?
Yes. Lennox International trades on the New York Stock Exchange under the ticker LII.
Who owns Lennox?
Lennox International is a public company owned by institutional investors and other shareholders. Alok Maskara is CEO. There is no controlling owner.
Where is Lennox International headquartered?
Lennox International is headquartered in Richardson, Texas, a Dallas suburb. It was founded in Marshalltown, Iowa, in 1895.
What does Lennox International make?
The company makes residential furnaces, air conditioners, and heat pumps; commercial rooftop HVAC systems; and commercial refrigeration under the Lennox, Armstrong Air, Ducane, and Heatcraft brands.
How much revenue does Lennox make?
Lennox International reported approximately $5.2 billion in revenue for fiscal 2025, with operating margins among the strongest in the HVAC industry.
What is Lennox's competitive advantage?
Lennox's advantages are its premium, high-efficiency product positioning and its exclusive dealer distribution model, which together produce industry-leading margins and brand loyalty.
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