HVAC and electrical contractor Comfort Systems (NYSE: FIX) beat Wall Street’s revenue expectations in Q2 CY2026, with sales up 50.3% year on year to $3.27 billion. Its GAAP profit of $12.53 per share was 20.3% above analysts’ consensus estimates.

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Brian Lane, Comfort Systems USA’s Chief Executive Officer, said, “Our people continued their unmatched execution in markets across the country, achieving great outcomes for our customers and communities every day. Their continued excellence produced record results in virtually every aspect of our overall business. As compared to the same quarter last year, Comfort Systems USA is reporting a 50% increase in revenue, a 92% increase in per share earnings, and remarkable and completely unprecedented quarterly cash flow of more than $1 billion.”

Company Overview

Formed through the merger of 12 companies, Comfort Systems (NYSE: FIX) provides mechanical and electrical contracting services.

Revenue Growth

A company’s long-term performance is an indicator of its overall quality. Any business can put up a good quarter or two, but the best consistently grow over the long haul. Over the last five years, Comfort Systems grew its sales at an incredible 32% compounded annual growth rate. Its growth surpassed the average industrials company and shows its offerings resonate with customers, a great starting point for our analysis.

We at StockStory place the most emphasis on long-term growth, but within industrials, a half-decade historical view may miss cycles, industry trends, or a company capitalizing on catalysts such as a new contract win or a successful product line. Comfort Systems’s annualized revenue growth of 35.9% over the last two years is above its five-year trend, suggesting its demand was strong and recently accelerated.

We can dig further into the company’s revenue dynamics by analyzing its backlog, or the value of its outstanding orders that have not yet been executed or delivered. Comfort Systems’s backlog reached $14.06 billion in the latest quarter and averaged 56% year-on-year growth over the last two years. Because this number is better than its revenue growth, we can see the company accumulated more orders than it could fulfill and deferred revenue to the future. This could imply elevated demand for Comfort Systems’s products and services but raises concerns about capacity constraints.

This quarter, Comfort Systems reported magnificent year-on-year revenue growth of 50.3%, and its $3.27 billion of revenue beat Wall Street’s estimates by 9.9%.

Looking ahead, sell-side analysts expect revenue to grow 12.6% over the next 12 months, a deceleration versus the last two years. We still think its growth trajectory is attractive given its scale and implies the market is forecasting success for its products and services.

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Operating Margin

Operating margin is a key measure of profitability. Think of it as net income - the bottom line - excluding the impact of taxes and interest on debt, which are less connected to business fundamentals.

Comfort Systems has managed its cost base well over the last five years. It demonstrated solid profitability for an industrials business, producing an average operating margin of 11.7%. This result was particularly impressive because of its low gross margin, which is mostly a factor of what it sells and takes huge shifts to move meaningfully. Companies have more control over their operating margins, and it’s a show of well-managed operations if they’re high when gross margins are low.

Analyzing the trend in its profitability, Comfort Systems’s operating margin rose by 10.7 percentage points over the last five years, as its sales growth gave it immense operating leverage.

This quarter, Comfort Systems generated an operating margin profit margin of 17.1%, up 3.3 percentage points year on year. The increase was encouraging, and because its operating margin rose more than its gross margin, we can infer it was more efficient with expenses such as marketing, R&D, and administrative overhead.

Earnings Per Share

We track the long-term change in earnings per share (EPS) for the same reason as long-term revenue growth. Compared to revenue, however, EPS highlights whether a company’s growth is profitable.

Comfort Systems’s EPS grew at 57.7% compounded annual growth rate over the last five years, higher than its 32% annualized revenue growth. This tells us the company became more profitable on a per-share basis as it expanded.

We can take a deeper look into Comfort Systems’s earnings quality to better understand the drivers of its performance. As we mentioned earlier, Comfort Systems’s operating margin expanded by 10.7 percentage points over the last five years. On top of that, its share count shrank by 3.6%. These are positive signs for shareholders because improving profitability and share buybacks turbocharge EPS growth relative to revenue growth.

Like with revenue, we analyze EPS over a shorter period to see if we are missing a change in the business.

For Comfort Systems, its two-year annual EPS growth of 84.7% was higher than its five-year trend. We love it when earnings growth accelerates, especially when it accelerates off an already high base.

In Q2, Comfort Systems reported EPS of $12.53, up from $6.53 in the same quarter last year. This print easily cleared analysts’ estimates, and shareholders should be content with the results. Over the next 12 months, Wall Street expects Comfort Systems’s full-year EPS to grow 14.2% from $40.65 to $46.40.

Key Takeaways from Comfort Systems’s Q2 Results

We were impressed by how significantly Comfort Systems blew past analysts’ EBITDA expectations this quarter. We were also excited its revenue outperformed Wall Street’s estimates by a wide margin. Zooming out, we think this was a good print with some key areas of upside. Investors were likely hoping for more, and shares traded down 1.4% to $1,806 immediately following the results.

So do we think Comfort Systems is an attractive buy at the current price? When making that decision, it’s important to consider its valuation, business qualities, as well as what has happened in the latest quarter. We cover that in our actionable full research report which you can read here (it’s free).