Comfort Systems USA (FRA:9CF) Cyclically Adjusted Book per Share: €28.31 (As of Jun. 2026)

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FRA:9CF Comfort Systems USA Inc FRA:9CF
85 GF Score
Price €1,541.00
GF Value €691.25
Valuation Significantly Overvalued
! 1 Warning Sign
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What is Comfort Systems USA Cyclically Adjusted Book per Share?

Comfort Systems USA FRA:9CF +0.65% 85 Cyclically Adjusted Book per Share is €28.31 as of Jun. 2026. GuruFocus rates FRA:9CF with a GF Score™ of 85/100 and a GF Value™ of €691.25 (Significantly Overvalued). The stock has 1 warning sign investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and 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 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 €28.31 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Comfort Systems USA's average Cyclically Adjusted Book Growth Rate was 29.40% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 20.80% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 19.70% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 13.30% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Comfort Systems USA was 20.80% per year. The lowest was -7.10% per year. And the median was 5.10% per year.

As of today (2026-08-06), Comfort Systems USA's current stock price is €1541.00. Comfort Systems USA's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was €28.31. Comfort Systems USA's Cyclically Adjusted PB Ratio of today is 54.43.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Comfort Systems USA was 66.56. The lowest was 2.93. And the median was 6.25.


Comfort Systems USA  (FRA:9CF) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

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 Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=1541.00/28.31
=54.43

* 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.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Comfort Systems USA was 66.56. The lowest was 2.93. And the median was 6.25.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Comfort Systems USA Cyclically Adjusted Book per Share Related Terms


Comfort Systems USA Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Comfort Systems USA's Cyclically Adjusted Book per Share 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 Book per Share Chart

Comfort Systems USA Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 11.66 15.04 16.76 21.59 23.66

Comfort Systems USA Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted Book per Share Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 21.32 21.93 23.66 25.29 28.31

FRA:9CF vs EME, PWR, MTZ: Cyclically Adjusted Book per Share 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.


FRA:9CF
85GF Score
Comfort Systems USA Inc FRA:9CF
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Comfort Systems USA Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and 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.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

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.

For example, Comfort Systems USA's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book= Book Value per Share /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=79.335/333.9520*333.9520
=79.335

Current CPI (Jun. 2026) = 333.9520.

Comfort Systems USA Quarterly Data

Book Value per Share CPI Adj_Book
201609 8.735 241.428 12.083
201612 9.596 241.432 13.273
201703 9.594 243.801 13.142
201706 9.474 244.955 12.916
201709 9.307 246.819 12.593
201712 9.497 246.524 12.865
201803 9.384 249.554 12.558
201806 10.594 251.989 14.040
201809 11.346 252.439 15.010
201812 11.866 251.233 15.773
201903 12.359 254.202 16.236
201906 12.777 256.143 16.658
201909 13.805 256.759 17.955
201912 14.370 256.974 18.675
202003 14.724 258.115 19.050
202006 15.288 257.797 19.804
202009 15.583 260.280 19.994
202012 15.819 260.474 20.281
202103 16.754 264.877 21.123
202106 17.172 271.696 21.107
202109 18.202 274.310 22.160
202112 19.756 278.802 23.664
202203 22.184 287.504 25.768
202206 23.711 296.311 26.723
202209 26.863 296.808 30.225
202212 26.395 296.797 29.699
202303 27.522 301.836 30.450
202306 28.680 305.109 31.391
202309 31.631 307.789 34.320
202312 32.836 306.746 35.748
202403 35.376 312.332 37.825
202406 38.583 314.175 41.012
202409 40.192 315.301 42.569
202412 45.780 315.605 48.441
202503 46.554 319.799 48.614
202506 48.441 322.561 50.152
202509 53.948 324.800 55.468
202512 59.449 324.054 61.265
202603 69.202 330.213 69.986
202606 79.335 333.952 79.335

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of €28.31 mean?
Comfort Systems USA (FRA:9CF) has a Cyclically Adjusted Book per Share of €28.31 as of Jun. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Comfort Systems USA and its competitors.
Is Comfort Systems USA's Cyclically Adjusted Book per Share too high?
Comfort Systems USA's current Cyclically Adjusted Book per Share is €28.31. Overall, Comfort Systems USA has a GF Score™ of 85/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Comfort Systems USA's Cyclically Adjusted Book per Share compare to EME and PWR?
Comfort Systems USA's Cyclically Adjusted Book per Share of €28.31 can be compared against companies in the Construction industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for a Construction company?
A good Cyclically Adjusted Book per Share depends on the Construction industry context. However, Cyclically Adjusted Book per Share should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Comfort Systems USA and its competitors. Comfort Systems USA's current Cyclically Adjusted Book per Share is €28.31. 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 (FRA:9CF) is currently considered Significantly Overvalued. The stock's GF Value™ is €691.25, compared to a current price of €1,541.00 — trading 122.9% above its estimated fair value. The current Cyclically Adjusted Book per Share is €28.31. Comfort Systems USA's overall GF Score™ is 85/100 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 Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Comfort Systems USA (FRA:9CF), the current Cyclically Adjusted Book per Share is €28.31 as of Jun. 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 (FRA:9CF) Overvalued in 2026?

Based on GuruFocus' analysis, Comfort Systems USA stock appears to be overvalued. The current stock price of €1,541.00 is trading 122.9% above its estimated GF Value™ of €691.25. GuruFocus considers Comfort Systems USA to be Significantly Overvalued.

Key valuation signals for FRA:9CF:

  • Cyclically Adjusted Book per Share: €28.31
  • GF Value™: €691.25 vs. price of €1,541.00 (122.9% above fair value)
  • GF Score™: 85/100 with 1 warning sign

No single metric tells the full story. See the FRA:9CF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Comfort Systems USA Business Description

Other Exchanges FIX:USAFIX:Mexico1FIX:Italy
Address 9753 Katy Freeway, Suite 700, Houston, TX, USA, 77024
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.
85GF Score

Get the complete analysis for FRA:9CF

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€1,541.00
Price
€691.25
GF Value