Sifting through countless of stocks in the Construction & Engineering industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Comfort Systems USA, Inc. or APi Group Corporation because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Comfort Systems USA, Inc. and APi Group Corporation compare based on key financial metrics to determine which better meets your investment needs.

About Comfort Systems USA, Inc. and APi Group Corporation

Comfort Systems USA, Inc., together with its subsidiaries, provides mechanical and electrical installation, renovation, maintenance, repair, and replacement services for the mechanical and electrical services industry in the United States. The company operates through two segments: Mechanical and Electrical. It offers heating, ventilation, and air conditioning systems, as well as plumbing, electrical, piping and controls, off-site construction, monitoring, and fire protection. The company is also involved in the design, engineering, integration, installation, and start-up of mechanical, electrical, and plumbing (MEP) and related systems in new buildings; and renovation, expansion, maintenance, monitoring, repair, and replacement of systems in existing buildings. In addition, it provides remote monitoring of power usage, temperature, pressure, humidity and air flow for MEP and other building systems. The company serves building owners and developers, general contractors, architects, consulting engineers, and property managers in the commercial, industrial, and institutional markets. Comfort Systems USA, Inc. was founded in 1917 and is headquartered in Houston, Texas.

APi Group Corporation provides fire and life safety, security, elevator and escalator, and specialty services worldwide. It operates in two segments, Safety Services and Specialty Services. The company offers fire protection solutions; electronic security systems; and elevators and escalators, including the design, installation, inspection, service, and monitoring of life safety systems to high tech services, advanced manufacturing, healthcare, fulfillment and distribution centers, and critical infrastructure end markets. It also provides various specialty contracting, fabrication and distribution, and infrastructure and utility services to critical infrastructure, high tech services, and healthcare end markets. The company was formerly known as J2 Acquisition Limited and changed its name to APi Group Corporation in October 2019. APi Group Corporation was founded in 1926 and is headquartered in New Brighton, Minnesota.

Latest Construction & Engineering and Comfort Systems USA, Inc., APi Group Corporation Stock News

As of September 1, 2026, Comfort Systems USA, Inc. had a $54.6 billion market capitalization, compared to the Construction & Engineering median of $2.8 million. Comfort Systems USA, Inc.’s stock is NA in 2026, NA in the previous five trading days and up 120.99% in the past year.

Currently, Comfort Systems USA, Inc.’s price-earnings ratio is 38.3. Comfort Systems USA, Inc.’s trailing 12-month revenue is $11.2 billion with a 12.8% net profit margin. Year-over-year quarterly sales growth most recently was 50.3%. Analysts expect adjusted earnings to reach $49.007 per share for the current fiscal year. Comfort Systems USA, Inc. currently has a 0.2% dividend yield.

Currently, APi Group Corporation does not have a price-earnings ratio. APi Group Corporation’s trailing 12-month revenue is $8.4 billion with a 4.1% net profit margin. Year-over-year quarterly sales growth most recently was 13.3%. Analysts expect adjusted earnings to reach $1.726 per share for the current fiscal year. APi Group Corporation does not currently pay a dividend.

How We Compare Comfort Systems USA, Inc. and APi Group Corporation Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Comfort Systems USA, Inc. and APi Group Corporation’s stock grades to see how they measure up against one another.

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Comfort Systems USA, Inc. and APi Group Corporation Stock Value Grades

Company	Ticker	Value
Comfort Systems USA, Inc.	FIX	F
APi Group Corporation	APG	D

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection.

Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

AAII’s A+ Investor Value Grade derives from a stock’s value score. The Value Score is the percentile rank of the average of the percentile ranks of the price-to-sales ratio, price-earnings ratio, enterprise-value-to-EBITDA (EV/EBITDA) ratio, shareholder yield, price-to-book-value ratio and price-to-free-cash-flow ratio. The score is variable, meaning it can consider all six ratios or, should any of the six ratios not be valid, the remaining ratios that are valid. To be assigned a Value Score, stocks must have a valid (non-null) ratio and corresponding ranking for at least two of the six valuation ratios.

Stocks with a Value Score from 81 to 100 are considered deep value, those with a score between 61 and 80 are a good value and so on.

Comfort Systems USA, Inc. has a Value Score of 15, which is Ultra Expensive. APi Group Corporation has a Value Score of 24, which is Expensive.

The Value Stock Winner: No Clear Winner

Neither Comfort Systems USA, Inc. or APi Group Corporation has a high enough value grade to be considered a “winner.” Investors who are considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolio. It’s important to look at a wide range of financial metrics in order to determine if Comfort Systems USA, Inc. or APi Group Corporation is the better investment when it comes to value.

Comfort Systems USA, Inc. and APi Group Corporation Growth Grades

Company	Ticker	Growth
Comfort Systems USA, Inc.	FIX	B
APi Group Corporation	APG	A

The foundation of growth investing is seeking out stocks of companies exhibiting strong, consistent and prolonged growth that is expected to continue into the future.

In order to compute the growth score and assign it a letter grade, the percentile ranks for each of three components‐consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations‐must be determined. These three rank figures are added together, and the sum is ranked against the entire stock universe to arrive at a company’s Growth Score to create an equal distribution of grades.

The companies in the bottom 20% of the stock universe receive Growth Grades of F, considered to be very weak, while those in the top 20% receive A grades, which are considered very strong.

Comfort Systems USA, Inc. has a Growth Score of 69, which is Strong. APi Group Corporation has a Growth Score of 89, which is Very Strong.

The Growth Grade Winner: APi Group Corporation

As you can clearly see from the Growth Grade breakdown above, APi Group Corporation has a more attractive growth grade than Comfort Systems USA, Inc.. For investors who focus solely on how a company is growing relative to other companies in the same industry, APi Group Corporation could be a good stock to add to their portfolio. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Comfort Systems USA, Inc. and APi Group Corporation’s Quality Grades

Company	Ticker	Quality
Comfort Systems USA, Inc.	FIX	A
APi Group Corporation	APG	B

Like the Value Grade, AAII’s A+ Investor Quality Grade comes from the percentile rank of key metrics. Specifically, the Quality Score is the percentile rank of the average of the percentile ranks of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and the F-Score.

The score is variable, meaning it can consider all eight measures or, should any of the eight measures not be valid, the remaining measures that are valid. To be assigned a Quality Score, stocks must have a valid (non-null) measure and corresponding ranking for at least four of the eight quality measures.

The Quality Score is used to assess the underlying “quality” of a particular stock. A higher-quality stock possesses traits associated with upside potential and reduced downside risk. Backtesting of the Quality Grade shows that stocks with higher grades, on average, outperformed stocks with lower grades over the period of 1998 through 2019.

Stocks receive better grades (higher scores) for having higher scores for the quality subcomponents and worse grades (lower scores) for lower scores for the subcomponents.

Comfort Systems USA, Inc. has a Quality Score of 95, which is Very Strong. APi Group Corporation has a Quality Score of 62, which is Strong.

The Quality Grade Winner: Comfort Systems USA, Inc.

As you can clearly see from the Quality Grade breakdown above, Comfort Systems USA, Inc. has a better overall quality grade than APi Group Corporation. For investors who are looking for companies with higher quality than others in the same industry, Comfort Systems USA, Inc. could be a good stock to add to their portfolios. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Other Comfort Systems USA, Inc. and APi Group Corporation Grades

In addition to Quality, Value and Growth, A+ Investor also provides grades for Momentum and Estimate Revisions.

Momentum grades help uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming.

Earnings estimate revisions scores take into account the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, surprises beget further surprises‐or at least continued sales growth (the exact opposite is generally true, too).

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Comfort Systems USA, Inc. and APi Group Corporation pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Comfort Systems USA, Inc. or APi Group Corporation Stock?

Overall, Comfort Systems USA, Inc. stock has a Value Score of 15, Growth Score of 69 and Quality Score of 95.

APi Group Corporation stock has a Value Score of 24, Growth Score of 89 and Quality Score of 62.

Comparing Comfort Systems USA, Inc. and APi Group Corporation’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.