Comfort Systems USA Inc. stock surged 18% on Friday after the HVAC and electrical contracting company reported third-quarter earnings that significantly exceeded analysts’ expectations.
The company’s strong results reflect heightened demand across its service lines and continued operational expansion.
Earnings and revenue beat estimates
For the third quarter, Comfort Systems reported earnings of $8.25 per share, well above the consensus estimate of $6.29.
Net income more than doubled year-over-year to $291.6 million, up from $146.2 million in the same period last year.
Revenue also climbed 35.2% year-over-year to $2.45 billion, surpassing Wall Street’s forecast of $2.16 billion.
The company’s impressive financial performance contributed to a notable stock surge.
Comfort Systems shares rose 18% on Friday, extending previous session’s 4% gain.
The stock has already appreciated 130% in 2025 and also hit an all-time high of 1,002.64 in the session.
Bookings for the quarter reached $3.7 billion, with a book-to-bill ratio of 1.5x, outperforming analyst expectations of 1.0x.
This represents the second consecutive quarter of strong bookings, following a 1.6x ratio in Q2.
According to DA Davidson, the company maintains a Buy rating, with a price target of $810.00, signaling investor confidence in Comfort Systems’ performance.
Backlog growth and strategic expansion
Comfort Systems’ backlog continued to expand at a record pace, driven by surging demand for HVAC and electrical contracting services.
CEO Brian Lane noted that the same-store backlog increased by more than $1 billion for a second consecutive quarter, underscoring the company’s strong pipeline of upcoming projects.
The company also announced the acquisition of private electrical contractors in Michigan and Florida, further strengthening its operational footprint.
Lane expressed optimism about future prospects, citing the combination of new partnerships, a strong backlog, and robust pipelines as drivers for continued growth in Q4 and into 2026.
The company’s technology segment, including data center projects, saw an 82% increase, while electrical services achieved 71% organic growth, reflecting diversified demand across service lines.
This broad-based expansion supports Comfort Systems’ competitive positioning in the HVAC and electrical contracting markets.
Financial stability and market outlook
Comfort Systems demonstrated strong operational efficiency during the quarter, achieving a record operating margin of 15.4%, a 430 basis point improvement from the prior year.
The company’s balance sheet remains healthy, with $861 million in cash and a net-debt leverage ratio of -0.6x, providing flexibility for future investments and acquisitions.
Analyst sentiment remains largely positive, with five analysts rating the stock as a Buy and two issuing a Hold rating.
The average 12-month price target of $804.25 represents a 2.51% discount to the previous closing price.
Comfort Systems’ robust backlog of $9.38 billion, combined with strong revenue growth and operational efficiency, positions the company for continued financial performance in the near term.
Investors will be closely monitoring the company’s ability to sustain its momentum amid unprecedented demand and ongoing expansion efforts.
The company’s strong quarterly performance, strategic acquisitions, and growing backlog signal a positive trajectory, supporting investor confidence and solidifying Comfort Systems USA as a leading player in the HVAC and electrical contracting sector.
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