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Lennox International Inc.
Lennox makes and sells heating, cooling, and ventilation equipment for homes and commercial buildings.
Lennox is an air conditioning and heating company. When a house in America gets too hot in summer or too cold in winter, the machine that fixes that — the big metal box humming outside, or the furnace in the basement — often comes from Lennox or one of the brands it owns. The company builds those systems and sells them into homes and commercial buildings across North America and Europe.
It makes most of its money in two places. One is residential: homeowners replacing a broken air conditioner or upgrading to a more efficient system. The other is commercial, selling rooftop units and climate-control equipment for restaurants, stores, and other big buildings. Lennox's customers are mostly the contractors and distributors who install and service the equipment rather than the homeowner directly. That matters, because contractors trust brands that are easy to install and cheap to repair, and Lennox spends heavily on its dealer network and training to keep that loyalty. Its rivals are large, well-known names like Carrier and Trane Technologies, plus Daikin in the global market. The heart of the business is replacement demand, and it is steadier than it sounds. Air conditioners and furnaces wear out after 15 to 20 years, so people buy them whether the economy is booming or not — and when it is hot, they buy faster. The catch is that Lennox sells big-ticket boxes tied to home construction and renovation, so a weak housing market or high interest rates can delay purchases. Its prices also rise with the cost of steel, copper, and the refrigerants inside the units, which the company must pass along to customers to protect its margins.
Lennox has spent recent years reshaping itself into a more focused business. It sold off its European operations, a move that shrank total sales but left it concentrated on the North American market where it is strongest. It has also been cutting costs and streamlining, and it returns a good chunk of its cash to shareholders through dividends and buybacks rather than sitting on it. The stock has done well over the long run, but it is a cyclical, manufacturing-heavy business — good years and slow years both happen, and the weather is a genuine factor in how each one turns out.
Saved answer · last researched 9 Nov 2026
BIG PICTURE
About 80% of Lennox's home-comfort demand is replacement, not new houses
- 80% Replacement demand for residential HVAC
- 20% New construction and other demand
Most of the money Lennox makes comes from people swapping out old heating and cooling systems, not from new homes. Management puts replacement at about 80% of residential demand, so a weak housing market stings less than it looks. When a furnace fails, it gets fixed or replaced anyway, giving this business a floor that homebuilders don't have. Source: Investing.com, Deutsche Bank Industrials Summit coverage, data from 2026
Timeline
A Furnace for a Patent Fee
Dave Lennox ran a railroad repair shop in Iowa, and when two inventors couldn't pay him, he took the patent for their riveted steel coal furnace instead. He improved the design and built the first riveted steel furnace himself, and that product became the seed of a heating and climate control empire. The whole company started with one clever machine and a customer who paid in ideas.
A Newspaperman Takes Over
A few years later, Lennox sold the business to D.W. Norris, the local newspaper editor and publisher. Norris incorporated it as the Lennox Furnace Company and sold 600 furnaces in its first year, and his family would stay at the center of the company's ownership for decades.
Buying Into Refrigeration
Decades on, Lennox bought Heatcraft, a commercial refrigeration business with brands like Larkin, Bohn, Chandler and Climate Control. That deal pushed the company past heating and cooling into keeping things cold, a new market it would carry for years.
A Parent Company Appears
Lennox International Inc. was set up as the parent company over Lennox Industries and whatever came next. The new structure pulled operations together under the Norris family's ownership.
Going Public
In 1999, the company sold shares to the public for the first time. Lennox International began trading on the New York Stock Exchange, turning a family-run business into one owned partly by outside investors.
Buying a Retail Arm
Fresh off going public, Lennox merged with Service Experts, a retail operation with about 10,000 employees and roughly $1 billion in sales. The deal, worth about $300 million, was a bet on growing closer to the people who actually install and service heating and cooling systems.
Pulling Back to North America
By 2022, Lennox decided to explore selling its European commercial HVAC and refrigeration businesses, only about 5% of revenue, so it could pour resources into North America. It also shrank to two reporting segments, residential and commercial heating and cooling, and dropped its stand-alone refrigeration segment. CEO Alok Maskara said the move matched the simple idea of focusing where the company could best hit its growth and profit targets.
Selling Europe and Buying AES
The European businesses went to funds managed by Syntagma Capital. That same year, Lennox bought AES to expand its commercial HVAC services, doubling down on the commercial side it had just chosen as a priority.
Samsung Deal and ServiceTitan
Lennox formed a joint venture with Samsung, called Samsung Lennox HVAC North America, to sell ductless air conditioning and heat pump products across the U.S. and Canada. It also made ServiceTitan its exclusive field service management provider for the residential business, tying itself closer to the software contractors use every day.
A Rough Earnings Report
In mid-2026, Lennox reported quarterly sales of $1.5 billion, short of expectations, and cut its full-year profit forecast, citing a weak residential market. The stock fell about 20% in a day. The split inside the numbers told the story of the company's shift: commercial was growing strongly while residential volumes slid.
Pomerantz Investigates Lennox
Pomerantz LLP then said it was investigating whether Lennox and some of its officers committed securities fraud or other unlawful business practices. The probe followed that earnings report and guidance cut, which had knocked the stock down about 21%.