Lennox to acquire HVAC division of NSI Industries from Sentinel Capital Partners for ~$550M

Lennox signed a definitive agreement to purchase the HVAC division of NSI Industries from PE firm Sentinel Capital Partners for approximately $550 million, including Duro Dyne and Supco brands. Expected to close Q4 2025.

“Lennox, a manufacturer of energy-efficient climate control solutions, announced it has signed a definitive agreement to purchase the [HVAC division](https://c212.net/c/link/?t=0&l=en&o=4489920-1&h=612808586&u=https%3A%2F%2Fnsiindustries.com%2Fhome%2Fhvac-division%2F&a=HVAC+division) of NSI Industries from Sentinel Capital Partners for approximately $550 million.”

Signals are extracted from public coverage and print archives and pinned to a verbatim quote, presented as reported by their sources; naming a company in a signal is not an accusation against it. The verified mark denotes a high-confidence, corroborated signal. See our methodology and legal notes.