Lennox, a provider of energy-efficient climate control solutions, has agreed to purchase the HVAC division of NSI Industries from Sentinel Capital Partners for approximately $550 million. The HVAC platform includes Duro Dyne, Supco and other critical component and accessories brands.
“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 Lennox CEO Alok Maskara. “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.”
Duro Dyne and Supco offer HVAC parts and supplies that complement Lennox’s residential and commercial HVAC products with distribution and manufacturing sites across the United States and Canada. Duro Dyne manufactures HVAC/R components and accessories. Supco provides high-performing, technician-focused HVAC/R parts.
“My team members and I are excited to join Lennox,” said NSI Industries HVAC President John MacQuarrie. “The resources Lennox brings us will help us ensure our legacy of success, built over 70-plus years by our team members and channel partners, continues.”
The acquisition is expected to close in the fourth quarter of 2025, subject to various regulatory approvals.
