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Lennox to Acquire NSI Industries’ HVAC Division for $550 Million
18 August 2025

Lennox to Acquire NSI Industries’ HVAC Division for $550 Million

Lennox has signed a definitive agreement to acquire the HVAC division of NSI Industries from Sentinel Capital Partners for approximately $550 million. The transaction includes established brands such as Duro Dyne and Supco, expanding Lennox’s portfolio of HVAC components and accessories across North America.

The acquisition aims to strengthen Lennox’s capabilities in delivering an integrated range of parts and supplies, supported by improved digital and distribution systems. According to the company, this move is in response to growing customer demand for a broader parts offering within the residential and commercial HVAC sectors.

Duro Dyne is recognized for its HVAC/R components and accessories, while Supco specializes in technician-oriented HVAC/R parts. Both companies operate manufacturing and distribution facilities across the United States and Canada, complementing Lennox’s existing footprint.

“This acquisition strengthens our ability to deliver complete lifecycle solutions for residential and commercial customers and reinforces our position as a one-stop partner for the HVAC industry,” said Alok Maskara, Chief Executive Officer of Lennox. “By adding trusted heritage brands including Duro Dyne and Supco into our portfolio, we are responding to the needs of our customers who have asked for a broader parts and supplies offering.”

NSI Industries HVAC President John MacQuarrie added, “The resources Lennox brings us will help us ensure our legacy of success, built over 70+ years by our team members and channel partners, continues.”

Related tags: HVAC
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