Moatly / Stocks / FIX

Comfort Systems USA, Inc. (FIX) — what is it worth?

$1,685.29 · $59.3B market cap · Engineering & Construction
Scored from reported financial statements. Data as of 2026-10-02.
Moat
100
Durability of advantage
Management
100
Returns and capital use
Margin of safety
36
Price against value
Buy price
$1,019.53
Consensus of three methods
Intrinsic value
$1,219.80
What the business is worth
Margin of safety price
$609.90
Intrinsic value less 50%
10-CAP price
$645.85
Ten times owner earnings
Payback time price
$1,019.53
Eight years of free cash flow
What the numbers say

Comfort Systems USA, Inc. scores 100 for management and 100 for moat. The management score rests on a return on invested capital of 33.6% and a gross margin of 24.1% — figures that describe a business turning capital into profit efficiently. Debt sits at 0.32x equity.

The price anchors are built on deliberately conservative assumptions. Growth is modelled at 15.0% a year, below the 26.0% actually measured over the last decade — the model caps growth rather than extrapolating a good run forwards. The exit multiple assumed is 30.0x. That produces an intrinsic value of $1,219.80, a 10-CAP price of $645.85 and a payback time price of $1,019.53, with the value zone set at the highest of the three, $1,019.53. Today's price of $1,685.29 is 65% above it.

A wonderful business at the wrong price is still the wrong price. Comfort Systems USA, Inc. scores well on the business and poorly on the entry point, which is the most common shape in a long bull market.

Key figures

Price$1,685.29
Market cap$59.3B
P/E ratio41.4x
Return on invested capital33.6%
Gross margin24.1%
Debt to equity0.32x
Free cash flow yield3.1%
Growth rate used15.0%
Growth rate measured26.0%
Exit multiple assumed30.0x

How it compares

CompanyMoatBuy price
Ferrovial SE (FER)69$56.45
EMCOR Group, Inc. (EME)90$405.42
Quanta Services (PWR)98$272.07
MasTec Inc. (MTZ)62$94.05

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Run your own assumptions

Every number above is built on assumptions that can be changed. In Moatly you can move the growth rate, the exit multiple and the margin of safety and watch every figure recalculate, so you are testing your own view of Comfort Systems USA, Inc. rather than accepting ours.

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Not investment advice. Estimates only, built on stated assumptions that could be wrong. Figures are drawn from reported financial statements and were current as of the date shown. Do your own research.