Comfort Systems USA Reports 53.7% Revenue Growth to $3.77 Billion in Q3 2026

Comfort Systems USA, Inc. reported significant financial growth in its latest quarterly filing, with revenues for the third quarter of 2026 reaching $3.77 billion, a 53.7% increase from $2.45 billion in the same period last year. For the first nine months of 2026, total revenue was $9.90 billion, up 53.3% from $6.46 billion in 2025. The company's operating income also saw a substantial rise, increasing to $624.6 million for the third quarter and $1.67 billion for the nine-month period, compared to $378.9 million and $887.8 million, respectively, in the prior year.

The growth in revenue and profitability was attributed to both same-store activity and strategic acquisitions. The company noted a 46.3% increase in same-store revenue, driven by strong demand in the technology sector, particularly for data centers. Additionally, acquisitions such as Boys Electrical Contractors and a modular company in Texas contributed to a 7.4% increase in revenue. The mechanical segment generated $2.58 billion in revenue for the third quarter, while the electrical segment brought in $1.18 billion, marking increases of 42.7% and 84.8%, respectively.

Operationally, Comfort Systems expanded its workforce and operational footprint, increasing its employee count to 52 operating locations as of September 30, 2026. The company reported a backlog of $17.81 billion, a 90% increase from the previous year, indicating strong future revenue potential. The backlog growth was primarily driven by new contracts in the technology sector and acquisitions, which added $56.5 million and $27.4 million, respectively.

The company also reported a significant increase in cash flow, with net cash provided by operating activities totaling $2.54 billion for the first nine months of 2026, compared to $717.8 million in the same period last year. This increase was largely due to higher earnings and favorable changes in working capital, including a $1.13 billion benefit from billings in excess of costs. Comfort Systems maintained a strong liquidity position, with $1.01 billion available under its credit facility as of September 30, 2026.

Looking ahead, Comfort Systems anticipates continued strong demand, particularly from manufacturing and technology customers, despite challenges such as rising labor costs and supply chain disruptions. The company expects to leverage its substantial backlog and operational efficiencies to sustain growth and profitability through the remainder of 2026 and into 2027.