Shares of Comfort Systems USA (NYSE: FIX) skyrocketed 17.03% in after-hours trading on Thursday following the release of its outstanding third-quarter financial results. The mechanical and electrical contracting services firm significantly outperformed analyst expectations across multiple metrics and announced a substantial dividend increase.

The company reported Q3 earnings per share of $8.25, more than doubling from $4.09 in the same period last year and surpassing the FactSet analyst consensus estimate of $6.29 by 31.16%. Revenue for the quarter reached $2.45 billion, up 35.21% year-over-year and exceeding the analyst consensus of $2.16 billion by 13.54%. Comfort Systems USA's net income for Q3 stood at $291.615 million, significantly beating the IBES estimate of $217 million.

Adding to the positive sentiment, Comfort Systems USA announced a quarterly dividend increase to $0.60 per share, up from its previous $0.50. The company's backlog also showed robust growth, reaching $9.38 billion as of September 30, 2025, compared to $8.12 billion at the end of the previous quarter. CEO Brian Lane attributed the exceptional results to favorable developments in late-stage projects and unprecedented demand for the company's services. With recent acquisitions expected to add over $200 million in annual revenue and a strong backlog, Comfort Systems USA expressed optimism about its performance in Q4 and into 2026.