01—Abstract
Summary
Summary of the 10-Q filed October 23, 2025. Cited figures are marked; the original filing is the authoritative source.
Comfort Systems USA, Inc. (FIX) reported a strong third quarter and nine-month performance for the period ending September 30, 2025.
Revenue surged significantly year-over-year, driven by robust demand in the technology sector, particularly for data centers, and strong performance in both mechanical and electrical segments. The company saw substantial growth in its backlog, indicating continued positive momentum. Profitability improved considerably, with gross profit and operating income showing significant increases due to higher revenues and enhanced operational execution.
The company also demonstrated strong free cash flow generation and maintained a healthy liquidity position, further strengthened by an amendment to its credit facility, increasing borrowing capacity. While the company continues to navigate challenges such as increased labor costs and supply chain delays, management remains optimistic about the outlook for the remainder of 2025 and into 2026, citing strong project pipelines and favorable market conditions in key sectors. The company also made strategic acquisitions during the period, further expanding its capabilities and market reach.
02—Key points
Key Highlights
- Revenue for the third quarter of 2025 increased by 35.2% to $2.45 billion year-over-year, with the nine-month revenue up 25.1% to $6.46 billion.
- Gross profit increased by 59.2% in Q3 and 45.9% year-to-date, with gross profit margin improving significantly from 21.1% to 24.8% for Q3 and 20.2% to 23.6% for the nine months.
- Operating income grew substantially, up 86.7% to $378.9 million in Q3 and 89.2% to $887.8 million for the nine months ended September 30, 2025.
- The company's backlog increased significantly, reaching $9.38 billion as of September 30, 2025, a 65.1% increase year-over-year, driven by strong project bookings in the technology sector.
- Comfort Systems USA, Inc. amended its senior credit facility, increasing borrowing capacity to $1.10 billion, and maintained strong liquidity with $916.8 million of credit available as of September 30, 2025.
- Net cash provided by operating activities increased to $717.8 million for the nine months ended September 30, 2025, contributing to a robust free cash flow of $632.2 million.
- The company completed several strategic acquisitions during the period, including Right Way Plumbing & Mechanical LLC and Century Contractors, LLC, to expand its service offerings and market presence.
03—One dollar
Follow one dollar
Of each $1.00 of revenue in Q3 FY2025, Comfort Systems USA kept $0.12.
- Revenue$2.45B100.0%
- Cost of revenue−$1.84B75.2%
- Gross profit$607.9M24.8%
- Operating costs−$229.0M9.3%
- Operating income$378.9M15.5%
- Interest, other & tax−$87.3M3.6%
- Net income$291.6M11.9%
04—Financials
Financial Highlights
Figures from 10-QQ3 FY2025filed October 23, 2025Financial Statements
Q3 FY2025 against Q3 FY2024
| Line item | Q3 FY2025Q3 FY2024 | Change |
|---|---|---|
| Revenue | $2.45B$1.81B | +35.2% |
| Cost of Revenue | $1.84B$1.43B | +28.8% |
| Gross Profit | $607.87M$381.71M | +59.2% |
| SG&A Expenses | $229.58M$180.18M | +27.4% |
| Operating Income | $378.87M$202.88M | +86.7% |
| Net Income | $291.62M$146.24M | +99.4% |
| EPS (Basic) | $8.26$4.10 | +101.5% |
| EPS (Diluted) | $8.25$4.09 | +101.7% |
| Shares Outstanding (Basic) | 35.31M35.67M | −1.0% |
| Shares Outstanding (Diluted) | 35.37M35.76M | −1.1% |
05—Questions
Frequently Asked Questions
What were the main drivers of Comfort Systems USA's revenue growth in the reported period?
The primary drivers of revenue growth were strong market conditions, an increase in backlog, and particularly a surge in demand from the technology sector, especially for data centers. Acquisitions also contributed to the revenue increase.
How has the company's profitability changed compared to the prior year?
Profitability has significantly improved. Gross profit increased substantially in both the third quarter and year-to-date periods, accompanied by an expansion of gross profit margins. Operating income also saw considerable growth, reflecting improved operational execution and higher revenues.
What is the outlook for Comfort Systems USA for the remainder of 2025 and into 2026?
The company anticipates continued solid earnings for the remainder of 2025 and is well-positioned for success in 2026. Management expects supportive conditions, especially for manufacturing and technology customers, to continue, driven by a substantial project pipeline and backlog.
How is the company managing challenges like labor costs and supply chain disruptions?
The company is recognizing these challenges in its job planning and pricing, ordering materials earlier, and collaborating with customers to share supply risks. Management indicates they have been generally successful in maintaining productivity and procuring needed materials despite these ongoing issues.
06—Continue