The earnings release, today's presentation, and the webcast archive link for today's call are available on our investor relations website at investor.lennox.com. Turning to slide three, revenue was $1.1 billion, up 6% year-over-year, as growth initiatives gained traction and channel conditions stabilized. Our segment margin was 14.4% in the quarter, down 130 basis points, primarily due to the impact of factory under absorption. Operating cash flow was positive $16 million and adjusted earnings per share for the quarter was $3.35.
In Building Climate Solutions, emergency replacement momentum and disciplined execution contributed to record quarterly performance. We are reaffirming our full-year adjusted earnings per share guidance range of $23.50-$25.00. With that context, let's turn to slide four to discuss the current economic outlook. Channel destocking has largely concluded as dealers regain confidence and replacement demand strengthens.
At the same time, Lennox-specific growth initiatives are gaining momentum and beginning to offset these pressures. In addition, the on-track integration of Supco parts and supplies strengthens our attachment rate growth vector. In Building Climate Solutions, our superior execution continues with emergency replacement and national accounts both driving volume growth. Cold climate capabilities allow us to better address demand in northern regions, while our new compact air handlers make it easier to deploy high-efficiency systems in retrofit and space-constrained applications.
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