Even though Comfort Systems USA, Inc. (NYSE:FIX ) posted strong earnings, investors appeared to be underwhelmed. Our analysis says that investors should be optimistic, as the strong profit is built on solid foundations.

View our latest analysis for Comfort Systems USA

A Closer Look At Comfort Systems USA's Earnings

As finance nerds would already know, the accrual ratio from cashflow is a key measure for assessing how well a company's free cash flow (FCF) matches its profit. In plain english, this ratio subtracts FCF from net profit, and divides that number by the company's average operating assets over that period. You could think of the accrual ratio from cashflow as the 'non-FCF profit ratio'.

That means a negative accrual ratio is a good thing, because it shows that the company is bringing in more free cash flow than its profit would suggest. That is not intended to imply we should worry about a positive accrual ratio, but it's worth noting where the accrual ratio is rather high. Notably, there is some academic evidence that suggests that a high accrual ratio is a bad sign for near-term profits, generally speaking.

For the year to December 2024, Comfort Systems USA had an accrual ratio of -0.18. That indicates that its free cash flow quite significantly exceeded its statutory profit. Indeed, in the last twelve months it reported free cash flow of US$738m, well over the US$522.4m it reported in profit. Comfort Systems USA's free cash flow improved over the last year, which is generally good to see. Having said that, there is more to the story. The accrual ratio is reflecting the impact of unusual items on statutory profit, at least in part.

That might leave you wondering what analysts are forecasting in terms of future profitability. Luckily, you can click here to see an interactive graph depicting future profitability, based on their estimates.

How Do Unusual Items Influence Profit?

Comfort Systems USA's profit was reduced by unusual items worth US$85m in the last twelve months, and this helped it produce high cash conversion, as reflected by its unusual items. In a scenario where those unusual items included non-cash charges, we'd expect to see a strong accrual ratio, which is exactly what has happened in this case. It's never great to see unusual items costing the company profits, but on the upside, things might improve sooner rather than later. When we analysed the vast majority of listed companies worldwide, we found that significant unusual items are often not repeated. And that's hardly a surprise given these line items are considered unusual. If Comfort Systems USA doesn't see those unusual expenses repeat, then all else being equal we'd expect its profit to increase over the coming year.

Our Take On Comfort Systems USA's Profit Performance

Considering both Comfort Systems USA's accrual ratio and its unusual items, we think its statutory earnings are unlikely to exaggerate the company's underlying earnings power. Based on these factors, we think Comfort Systems USA's earnings potential is at least as good as it seems, and maybe even better! Ultimately, this article has formed an opinion based on historical data. However, it can also be great to think about what analysts are forecasting for the future. Luckily, you can check out what analysts are forecasting by clicking here.

After our examination into the nature of Comfort Systems USA's profit, we've come away optimistic for the company. But there is always more to discover if you are capable of focussing your mind on minutiae. For example, many people consider a high return on equity as an indication of favorable business economics, while others like to 'follow the money' and search out stocks that insiders are buying. While it might take a little research on your behalf, you may find this free collection of companies boasting high return on equity, or this list of stocks with significant insider holdings to be useful.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.