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Lennox Acquires Duro Dyne to Bolster HVAC System Portfolio

Duro Dyne - NSI Industries Brand acquired by Lennox

AcquisitionManufacturing

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Acquired

Duro Dyne - NSI Industries Brand

Wholesale Building Materials

Undisclosed amount

August 18, 2025

Lennox logo
Acquirer

Lennox

Manufacturing

Lennox, a leading provider of climate control solutions, has acquired Duro Dyne, a brand of NSI Industries, for an undisclosed amount. This corporate transaction signifies a strategic expansion for Lennox into specialized HVAC system components and accessories, bringing Duro Dyne's extensive product portfolio under its corporate umbrella. The acquisition is a direct purchase of a business unit, not a funding round for either company.

Duro Dyne specializes in the manufacturing of critical components for HVAC systems and ductwork. Its product range includes flexible duct connectors, OEM machinery for weld pins, and a wide array of air regulation and control equipment. This encompasses items such as Dynatite Cable Locks, comprehensive zoning systems, and various power-open, cable-operated, and spring-return dampers. The company is also known for its sheet metal necessities, duct connection and suspension systems, insulation fasteners, and related machinery and tools.

This acquisition is strategically aligned with Lennox's objectives to broaden its integrated HVAC solutions. Duro Dyne's expertise in air distribution, duct fabrication, and zone control complements Lennox's existing equipment offerings. The move is expected to generate significant synergies, allowing Lennox to offer a more comprehensive suite of products to its commercial and residential customers, enhance supply chain efficiencies, and leverage Duro Dyne's established presence in specialized HVAC installation products.

The combination of Lennox's industry leadership and Duro Dyne's specialized manufacturing capabilities is anticipated to strengthen their collective position in the HVAC market. The unified entity aims to deliver enhanced product solutions and improved services to contractors and building professionals, supporting more efficient and advanced climate control installations.

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Our AI suggests Duro Dyne - NSI Industries Brand may be interested in:

HVAC Systems
Electrical Components
Fire Safety Solutions
Data Networking Equipment
Cable Management Solutions

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