Comfort Systems USA (FIX) Stock Fundamentals, Analysis & Risk Signals

Health score, price, valuation, risk signals, and key metrics at a glance.

Comfort Systems USA

NYSE•Industrials•Engineering & Construction

$1,651.37+77.41(0.05%)After hours

Market Cap

$55.44B

P/E

38.6x

P/S

4.9x

P/B

17.2x

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.

How this company scores

ExcellentMetricSide Score: 95/100

Strongest: Profitability (25/25); weakest: Balance Sheet & Red Flags (21/25).

Profitability25/25

Growth25/25

Balance Sheet & Red Flags21/25

Cash & Earnings Quality24/25

Strengths

Growing revenueRising free cash flowStrong marginsHigh ROE

No red flags in the last 8 quarters.

Valuation vs. 5-year range

Today's multiple positioned against its own trailing range — a visual premium/discount check.

P/E · 38.6x5y range 13.7x – 38.6x

Currently above its 20-quarter median.

P/S · 4.9x5y range 0.8x – 4.9x

Currently above its 20-quarter median.

P/B · 17.2x5y range 3.3x – 17.2x

Currently above its 20-quarter median.

Price & Volume

Market Cap $55.44B

Metrics at a Glance

as of June 2026

Revenue & Profit

Revenue, EBITDA, operating income, net income, EPS, and shares

TTM Revenue: $11.23B
Q. Revenue: $3.27B
TTM EBITDA: $1.91B
TTM Op. Income: $1.85B
Q. Op. Income: $557.97M
TTM Net Income: $1.43B
Q. Net Income: $441.60M
EPS: $12.54
Shares Out.: $35.22M

$11.23B in TTM revenue grew 46.1% YoY, reaching $3.27B last quarter. TTM EBITDA of $1.91B and TTM operating income of $1.85B show growth is flowing through to the bottom line. TTM net income of $1.43B means revenue is converting into profit. Across the last 8 quarters, TTM revenue has risen for 7 consecutive quarters — an improving trend.

Margins

Gross, EBITDA, operating, and net margin trends

Gross Margin: 25.9%
EBITDA Margin: 17.1%
Op. Margin: 17.1%
Net Margin: 13.5%

Op. margin of 17.1% is up 3.3% YoY — cost efficiency is improving. Net margin at 13.5% and gross margin of 25.9% show how much of each revenue dollar survives to profit. Across the last 8 quarters, operating margin has risen for 5 consecutive quarters — an improving trend.

Price Ratios

P/E, P/S, P/B, EV/EBITDA, FCF yield, and earnings yield

P/E Ratio: 38.6x
P/S Ratio: 4.9x
P/B Ratio: 17.2x

At 38.6x P/E, the stock trades above typical market levels — the market expects above-average growth. P/S of 4.9x and P/B of 17.2x provide additional context. Use the growth and margin sections to judge whether the multiple is justified. Across the last 8 quarters, P/E has risen for 2 consecutive quarters — a weakening trend.

Assets & Liabilities

Total assets, cash, debt, book value, and leverage

Total Assets: $8.49B
Cash: $1.85B
Long-Term Debt: $53.85M
Book Value: $3.22B
D/E Ratio: 0.0
Debt/EBITDA: 0.1

With $8.49B in assets and $53.85M in long-term debt, D/E is 0.0and book value is $3.22B — a conservative capital structure with a cushion to weather downturns. Over the past year, debt/equity is down 46% — a weakening trend.

Cash Flow

Operating cash flow, free cash flow, FCF margin, and earnings quality

Op. Cash Flow: $1.14B
TTM Free Cash Flow: $2.16B
FCF Margin: 19.2%
FCF / Net Income: 1.5

TTM FCF of $2.16B on $1.14B in operating cash flow. The FCF / Net Income ratio of 1.5x means free cash flow covers net income — earnings are backed by cash. Across the last 8 quarters, free cash flow has risen for 5 consecutive quarters — an improving trend.