Lennox International's Q1 2026 results tell the same two-speed story the rest of the HVAC industry is living: residential soft, commercial resilient, and pricing doing the heavy lifting to protect margins in both.
On the residential side, Lennox entered 2026 with Q1 expected to be down approximately 20% year-over-year, in line with the broader residential market's continuing correction after the post-COVID pull-forward. CFO Michael Quenzer confirmed at the start of the year that combined price and mix are expected to contribute mid-single-digit revenue growth for full-year 2026, with the 2026 price increase and regulatory mix benefits — driven by the completed transition to R-454B equipment — offsetting volume weakness.
Cost inflation running at 2.5%: Quenzer guided 2026 cost inflation at approximately 2.5%, reflecting tariff carryovers from the Section 232 metal duties that took effect earlier this year. The June tariff cut to 15% for residential HVAC equipment provides some relief but does not reverse increases already baked into Lennox's cost structure for Q1.
The commercial picture: Lennox's commercial segment is a different story. Commercial HVAC demand has been driven by the ongoing non-residential construction cycle and, increasingly, by light commercial applications adjacent to data center and industrial growth. While Lennox's data center exposure is smaller than Carrier's, its commercial rooftop and applied equipment lines have been a stabilising force in an otherwise choppy top line.
The distributor relationship: Lennox sells primarily through its own network of Lennox Stores and company-owned distribution branches, which gives the company more direct visibility into channel inventory levels than OEMs selling through independent distributors. That structure means Lennox can adjust production cadence more tightly to real demand — but it also means the company absorbs more inventory risk internally.
What to watch: Lennox's full-year guidance assumes a residential market that stabilises rather than recovers in 2026. A hotter-than-normal summer — NOAA's June 2026 forecast calls for above-normal temperatures across most of the U.S. — could bring the residential replacement cycle forward. For contractors who carry Lennox equipment, that upside is worth positioning for now.
