Lennox International (NYSE: LII) has signed a definitive agreement to acquire Heat Controller, an HVAC equipment supplier owned by private equity firm Platinum Equity, the companies confirmed. The deal brings Heat Controller's Comfort-Aire and Century brands under the Lennox umbrella and closes out Platinum Equity's roughly two-year investment in Motors & Armatures Inc., the HVACR parts and supply distributor that had owned Heat Controller. Financial terms of the transaction were not disclosed, and the deal is expected to close later this year, subject to customary closing conditions and regulatory approval. Dallas-based Lennox is one of the largest publicly traded HVAC manufacturers in North America, selling equipment across residential, commercial and refrigeration end markets, and the Heat Controller acquisition marks its latest move to widen the range of brands and price points it can offer through independent distributors.
What Heat Controller Brings to Lennox
Heat Controller is headquartered in Jackson, Michigan, and supplies residential and commercial heating and cooling equipment to independent distributors across North America under its Comfort-Aire and Century brand names, covering products from half-ton to 25-ton capacities. The company traces its roots to 1907 and has built its business supplying value-oriented equipment to independent distributors rather than competing primarily on premium product lines. Platinum Equity acquired Heat Controller as part of its 2024 investment in Motors & Armatures Inc., known as MARS, a distributor of HVACR parts, supplies and equipment that had held Heat Controller within its portfolio.
A Second Bolt-On Deal for Heat Controller's New Owner
The transaction follows a similar pattern to Lennox's previous acquisition of the HVAC division of NSI Industries, which brought the Duro Dyne and Supco brands into the company's portfolio. Both deals reflect a strategy the company has pursued to broaden its equipment, parts and supply offerings beyond its core Lennox-branded product lines, giving distributors and contractors access to a wider range of price points and product categories under one manufacturer. Adding Heat Controller's Comfort-Aire and Century brands extends that strategy into value-tier residential and light commercial equipment, a segment where Lennox has historically had less direct presence than in its premium product lines.
Platinum Equity Closes Out Its MARS Investment
Platinum Equity Co-President Jacob Kotzubei said the sale concludes the firm's investment in MARS and reflects the private equity firm's broader approach to creating value through product introductions, acquisitions, leadership investments and strategic divestitures over the life of a portfolio company. Platinum Equity Managing Director Dan Krasner said the firm views Lennox as the right next step for the business. "We believe Lennox is an ideal strategic home for the Heat Controller business and are confident the company is well positioned to continue building on its momentum in this next chapter as part of the Lennox platform," Krasner said.
Heat Controller's Own Leadership Signals Continuity
Heat Controller President and CEO Philip Windham said the company intends to maintain the level of service its distributor customers have come to rely on through the ownership change. "We are excited to begin our next chapter with Lennox and continue delivering the service, flexibility and value our customers depend on," Windham said. Heat Controller has positioned itself around consistent availability and flexibility for independent distributors, a positioning the company signaled it plans to preserve as it integrates into Lennox's larger manufacturing and distribution network.
Part of a Broader Wave of HVAC Equipment Consolidation
The Heat Controller sale adds to a run of ownership changes across HVAC equipment manufacturing and distribution this year, as both strategic acquirers like Lennox and private equity-backed platforms continue to consolidate the sector. Private equity firms accounted for more than half of disclosed HVAC mergers and acquisitions tracked industrywide through early June, according to deal-tracking data, with strategic buyers such as Lennox representing the remaining share of transactions. For distributors and contractors who carry Comfort-Aire or Century equipment, the change in ownership is not expected to immediately alter product availability or distributor relationships, though it places both brands within a larger, publicly traded manufacturer's supply chain and manufacturing footprint rather than a private-equity-backed distributor's portfolio.
What's Next
The transaction still requires customary closing conditions and regulatory clearance before it is finalized, and neither company has detailed an integration timeline for folding Heat Controller's manufacturing operations and distributor relationships into Lennox's existing business. Lennox has not said whether the Comfort-Aire and Century brand names will continue to operate under their current branding once the deal closes or whether the products will eventually be absorbed into existing Lennox-branded lines, a decision the company has left open pending the close of the transaction later this year.
