StockOrNot
Open the deck

Comfort Systems USA (FIX)

Industrials · $39.3B market cap · SEC CIK 0001035983

$1,106 ▼−0.66% on the day close of Nov 10, 2026
87 Screens strongly
ahead of 87% of the S&P 500 · #4 of 79 in Industrials

Next reports on Feb 17, 2027, after the close, with analysts expecting $14.10 in earnings per share.

52-week range $841.66 to $2,074. 47% below its 52-week high and 31% above its low.

The case for FIX

The case against

What the score is made of

Each factor is half a curve over reported figures and half a rank among the other Industrials companies (momentum is judged against fixed thresholds only), and the five are blended by weight. The score is where that blend places it in the S&P 500. It describes the last filing and the current price. It is not a forecast.

Valuewhat you pay for the earnings and cash, against the growth you get81
Growthhow fast revenue and earnings are moving, this year and over five96
Profitabilityhow much of the revenue becomes profit, and how much of that is cash69
Momentumhow the price has behaved lately33
Stabilityhow violently it moves, what it owes and what it pays you44

The financials

Revenue growth

Is the business growing? Yes

Last 12 months+50.7%
Over 5 years+26.1% a year
FY2025 revenue$9.1B (+30%)

Free cash flow

Is it generating real cash? Yes

FY2025 free cash flow$1.0B
Of revenue11%
Of profit101%

Profit margins

Is profitability improving? Yes, improving

Gross margin26%
Operating margin17%
Net margin, FY24 → FY25 → now7.4% → 11.2% → 13.0%

Debt vs. cash

Is the balance sheet healthy? Yes, more cash than debt

Cash$982M
Long-term debt$139M
Net cash$843M
Years to repay0.1 yrs

Valuation

Is the stock price reasonable? Yes, it looks cheap

P/E24.1×
Fair P/E for its growth46×
P/FCF38.1×
Forward P/E19.4×
EV / EBITDA17.2×

At 24.1× earnings it trades well below the 46× that 25%+ a year of growth would justify. At 38.1× free cash flow it trades below that same mark.

The financials, five years deep

Pulled from Comfort Systems USA's XBRL filings on SEC EDGAR. Italic rows are worked out from the others.

FY2025FY2024FY2023FY2022FY2021
Revenue growth
Revenue$9.1B$7.0B$5.2B$4.1B$3.1B
Change on the year+30%+35%+26%+35%—
Free cash flow
Free cash flow$1.0B$738M$545M$253M$158M
Of revenue11%11%10%6%5%
Profit margins
Gross margin24.1%21.0%19.0%17.9%18.3%
Operating margin14.4%10.7%8.0%6.1%6.1%
Net margin11.2%7.4%6.2%5.9%4.7%
Debt vs. cash
Cash$982M$550M$205M$57.2M$58.8M
Long-term debt$139M$62.3M$39.3M$247M$385M
Net cash (debt)$843M$488M$166M−$190M−$326M

What Comfort Systems USA says it does

Comfort Systems USA, Inc., a Delaware corporation, was established in 1997. We provide mechanical and electrical contracting services. Our mechanical segment principally includes heating, ventilation and air conditioning (“HVAC”), plumbing, piping and controls, as well as off-site construction, monitoring and fire protection. Our electrical segment includes installation and servicing of electrical systems. We build, install, maintain, repair and replace mechanical, electrical and plumbing (“MEP”) systems through our 50 operating units with 190 locations in 142 cities throughout the United States. We operate primarily in the commercial, industrial and institutional MEP markets and perform most of our services in manufacturing, healthcare, education, office, technology, retail and government facilities. Substantially all of our consolidated 2025 revenue was derived from commercial, industrial and institutional customers and multi-family…

Risk factors FIX lists in its 10-K

Filings

Open FIX in the deck

Other Industrials companies

GEGE AerospaceRTXRTX CorporationCATCaterpillarGEVGE VernovaDEDeere & CompanyUNPUnion Pacific CorporationUBERUberETNEatonLMTLockheed MartinBABoeingPHParker HannifinADPAutomatic Data Processing