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Comfort Systems USASTU:9CF -5.35%83 Cyclically Adjusted PB Ratio is 53.67 as of Jul. 27, 2026, which is 761% above its 10-year median of 6.23. GuruFocus rates STU:9CF with a GF Score™ of 83/100 and a GF Value™ of €659.77 (Significantly Overvalued). The stock has 1 warning sign investors should review. Among 1,359 Construction companies, Comfort Systems USA ranks worse than 99.41% on this metric.
The historical rank and industry rank for Comfort Systems USA's Cyclically Adjusted PB Ratio or its related term are showing as below:
STU:9CF'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 2.93 Med: 6.23 Max: 66.56
Current: 53.78
During the past years, Comfort Systems USA's highest Cyclically Adjusted PB Ratio was 66.56. The lowest was 2.93. And the median was 6.23.
STU:9CF's Cyclically Adjusted PB Ratio is ranked worse than 99.41% of 1359
companies
in the Construction industry
Industry Median: 1.16
vs STU:9CF: 53.78
The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.
Comfort Systems USA's adjusted book value per share data for the three months ended in Jun. 2026 was €79.335. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is €28.23 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Comfort Systems USA (STU:9CF) Cyclically Adjusted PB Ratio Explanation
Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.
Comfort Systems USA Cyclically Adjusted PB Ratio Related Terms
Comfort Systems USA Cyclically Adjusted PB Ratio Historical Data
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The historical data trend for Comfort Systems USA's Cyclically Adjusted PB Ratio can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Comfort Systems USA Cyclically Adjusted PB Ratio Chart
STU:9CF vs EME, PWR, MTZ: Cyclically Adjusted PB Ratio Comparison
For the Engineering & Construction subindustry, Comfort Systems USA's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Comfort Systems USA Cyclically Adjusted PB Ratio vs Construction Industry
For the Construction industry and Industrials sector, Comfort Systems USA's Cyclically Adjusted PB Ratio distribution charts can be found below:
* The bar in red indicates where Comfort Systems USA's Cyclically Adjusted PB Ratio falls into.
Comfort Systems USA Cyclically Adjusted PB Ratio Calculation
Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.
Comfort Systems USA's Cyclically Adjusted PB Ratio for today is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
What does a Cyclically Adjusted PB Ratio of 53.67 mean?
Comfort Systems USA (STU:9CF) has a Cyclically Adjusted PB Ratio of 53.67 as of Jul. 27, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Comfort Systems USA and its competitors. This is 761% above median its historical median of 6.23. Over the past decade, Comfort Systems USA's Cyclically Adjusted PB Ratio has ranged from 2.93 to 66.56. According to the industry distribution chart, Comfort Systems USA ranks #1351 out of 1359 companies in the Construction industry, placing it in the top 99.4%.
Is Comfort Systems USA's Cyclically Adjusted PB Ratio too high?
Comfort Systems USA's current Cyclically Adjusted PB Ratio of 53.67 is 761% above median its 10-year median of 6.23. Over the past 10 years, this metric has ranged from a low of 2.93 to a high of 66.56. The Construction industry median Cyclically Adjusted PB Ratio is 1.16. Comfort Systems USA's value of 53.67 is 4526.7% above this industry median. Based on the distribution chart, Comfort Systems USA ranks #1351 out of 1359 companies in the Construction industry, which is in the bottom quartile relative to peers. Overall, Comfort Systems USA has a GF Score™ of 83/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Comfort Systems USA's Cyclically Adjusted PB Ratio compare to EME and PWR?
According to the Construction industry distribution chart, Comfort Systems USA ranks #1351 out of 1359 companies for Cyclically Adjusted PB Ratio. This places Comfort Systems USA in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.16. Comfort Systems USA's value of 53.67 is 4526.7% above this benchmark. Historically, Comfort Systems USA's own Cyclically Adjusted PB Ratio has ranged from 2.93 to 66.56 over the past decade. While the company's 10-year median is 6.23 vs. the industry median of 1.16, Comfort Systems USA has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted PB Ratio for a Construction company?
The median Cyclically Adjusted PB Ratio among Construction companies is 1.16, based on 1,359 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Comfort Systems USA's current Cyclically Adjusted PB Ratio of 53.67 is 4526.7% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Comfort Systems USA and its competitors. For the Construction industry, the median Cyclically Adjusted PB Ratio is 1.16 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Comfort Systems USA's current Cyclically Adjusted PB Ratio is 53.67, which is 761% above median its own 10-year median of 6.23. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Comfort Systems USA stock overvalued right now?
Based on GuruFocus' analysis, Comfort Systems USA (STU:9CF) is currently considered Significantly Overvalued. The stock's GF Value™ is €659.77, compared to a current price of €1,515.00 — trading 129.6% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 53.67, which is 761% above median its 10-year median of 6.23 and 4526.7% above the Construction industry median of 1.16. Comfort Systems USA's overall GF Score™ is 83/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For Comfort Systems USA (STU:9CF), the current Cyclically Adjusted PB Ratio is 53.67 as of Jul. 27, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Comfort Systems USA (STU:9CF) Overvalued in 2026?
Based on GuruFocus' analysis, Comfort Systems USA stock appears to be overvalued.
The current stock price of €1,515.00 is trading 129.6% above its estimated GF Value™ of €659.77.
GuruFocus considers Comfort Systems USA to be Significantly Overvalued.
Key valuation signals for STU:9CF:
Cyclically Adjusted PB Ratio: 53.67 (761% above median its 10-year median of 6.23)
GF Value™: €659.77 vs. price of €1,515.00 (129.6% above fair value)
Industry Position: 4526.7% above the Construction median (#1351 of 1359)
No single metric tells the full story. See the STU:9CF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Comfort Systems USA Inc provides comprehensive mechanical contracting services, including heating, ventilation, & air conditioning, or HVAC; plumbing; piping & controls; construction; and other electrical components. Projects are mainly for commercial, industrial, & institutional buildings, & tend to be geared toward HVAC. Revenue is roughly split between installation services for newly constructed facilities & maintenance services for existing buildings. The company installs & repairs products and systems throughout the United States. It operates in two segments, Mechanical services & Electrical services, the majority is from the Mechanical services segment.
83GF Score
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Cyclically Adjusted PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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