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Comfort Systems USA Inc. (FIX) Stock Fundamental Analysis & AI Rating 2026

FIX NYSE Electrical Work CIK: 0001035983
Updated This Month • Analysis: Mar 25, 2026 • SEC Data: 2025-12-31
📅 Next earnings: Apr 23, 2026 (in 7 days) • TBD ET • EPS est. $7.00 (vs $4.75 prior year) • All earnings →
Combined AI Rating
BUY
89% Confidence
AGREEMENT
STRONG BUY
92% Conf
BUY
86% Conf

📊 FIX Key Takeaways

Revenue: $9.1B
Net Margin: 11.2%
Free Cash Flow: $1.0B
Current Ratio: 1.21x
Debt/Equity: 0.06x
EPS: $28.88
AI Rating: STRONG BUY with 92% confidence
Comfort Systems USA Inc. (FIX) receives a BUY rating with 89% confidence from our AI fundamental analysis based on SEC 10-K filings. With revenue of $9.1B, net profit margin of 11.2%, and return on equity (ROE) of 41.8%, Comfort Systems USA Inc. demonstrates strong fundamentals in the Utilities sector. Below is our complete FIX stock analysis for 2026.

Is Comfort Systems USA Inc. (FIX) a Good Investment?

Claude

Comfort Systems demonstrates exceptional operational execution with 29.5% revenue growth, robust profitability (11.2% net margin, 41.8% ROE), and fortress-like financial health (0.06x debt/equity, 145.9x interest coverage). The company generates substantial free cash flow ($1.0B) while maintaining disciplined capital allocation, indicating sustainable competitive advantages in electrical contracting services.

ChatGPT

Comfort Systems USA shows strong fundamental quality with rapid revenue growth, double-digit operating and free cash flow margins, and very high returns on equity and assets. The balance sheet is conservatively structured with high cash, minimal long-term debt, and exceptional interest coverage, which supports resilience and flexibility. The main caution is that net income growth appears to have lagged revenue expansion, so sustaining margin quality and converting backlog growth into durable earnings will matter.

Why Buy Comfort Systems USA Inc. Stock? FIX Key Strengths

Claude
  • + Revenue growth of 29.5% YoY with improving operational leverage (14.4% operating margin)
  • + Exceptional returns on capital: 41.8% ROE and 15.9% ROA demonstrate efficient asset utilization
  • + Fortress balance sheet with minimal leverage (0.06x debt/equity) and $981.9M cash, enabling strategic flexibility
  • + Strong free cash flow generation ($1.0B) representing 11.3% of revenue, supporting reinvestment and shareholder returns
  • + Healthy liquidity metrics (1.21x current ratio, 1.19x quick ratio) despite rapid growth
  • + Exceptional interest coverage (145.9x) indicates zero financial distress risk
ChatGPT
  • + Strong top-line growth with healthy 24.1% gross margin and 14.4% operating margin
  • + Excellent financial health driven by $981.9M cash, 0.06x debt/equity, and 145.9x interest coverage
  • + High cash generation with $1.19B operating cash flow and $1.03B free cash flow

FIX Stock Risks: Comfort Systems USA Inc. Investment Risks

Claude
  • ! Rapid 29.5% revenue growth may face headwinds from market saturation or economic slowdown in electrical contracting sector
  • ! EPS growth (97.8% YoY) significantly outpacing revenue growth (29.5%) suggests large share buybacks; sustainability dependent on continued margin expansion
  • ! High insider trading activity (9 Form 4 filings in 90 days) warrants monitoring for capital allocation consistency
  • ! Operating leverage expansion from 14.4% margin may face pressure if labor costs or material inflation accelerates
ChatGPT
  • ! Net income was flat year over year despite 29.5% revenue growth, which may signal mix, cost, or integration pressure
  • ! Current ratio of 1.21x leaves less short-term cushion than the balance sheet's low leverage might suggest
  • ! Business demand can be cyclical due to exposure to construction, retrofit, and project timing

Key Metrics to Watch

Claude
  • * Gross margin trajectory and labor cost inflation impact on 24.1% current level
  • * Operating margin sustainability and ability to maintain 14.4% amid scaling
  • * Free cash flow conversion consistency relative to net income
  • * Debt/equity ratio trends and capital allocation priorities
  • * Revenue growth deceleration patterns in upcoming quarters
ChatGPT
  • * Net income and operating margin progression relative to revenue growth
  • * Operating cash flow and free cash flow conversion

Comfort Systems USA Inc. (FIX) Financial Metrics & Key Ratios

Revenue
$9.1B
Net Income
$1.0B
EPS (Diluted)
$28.88
Free Cash Flow
$1.0B
Total Assets
$6.4B
Cash Position
$981.9M

💡 AI Analyst Insight

Comfort Systems USA Inc. presents a mixed fundamental picture. Review the detailed metrics above to form your own investment thesis.

FIX Profit Margin, ROE & Profitability Analysis

Gross Margin 24.1%
Operating Margin 14.4%
Net Margin 11.2%
ROE 41.8%
ROA 15.9%
FCF Margin 11.3%

FIX vs Utilities Sector: How Comfort Systems USA Inc. Compares

How Comfort Systems USA Inc. compares to Utilities sector averages

Net Margin
FIX 11.2%
vs
Sector Avg 12.0%
FIX Sector
ROE
FIX 41.8%
vs
Sector Avg 10.0%
FIX Sector
Current Ratio
FIX 1.2x
vs
Sector Avg 0.8x
FIX Sector
Debt/Equity
FIX 0.1x
vs
Sector Avg 1.4x
FIX Sector

Sector benchmarks are approximate industry averages. Actual sector performance may vary.

Is Comfort Systems USA Inc. Stock Overvalued? FIX Valuation Analysis 2026

Based on fundamental analysis, Comfort Systems USA Inc. appears fundamentally strong relative to the Utilities sector in 2026.

Return on Equity
41.8%
Sector avg: 10%
Net Profit Margin
11.2%
Sector avg: 12%
Revenue Growth
N/A
Year-over-year
Debt/Equity
0.06x
Sector avg: 1.4x

Note: This is a fundamental analysis based on SEC filings. For P/E ratio, price targets, and market-based valuation, consult financial data providers. This is not investment advice.

Comfort Systems USA Inc. Balance Sheet: FIX Debt, Cash & Liquidity

Current Ratio
1.21x
Quick Ratio
1.19x
Debt/Equity
0.06x
Debt/Assets
62.0%
Interest Coverage
145.92x
Long-term Debt
$145.2M

FIX Revenue & Earnings Growth: 5-Year Financial Trend

FIX 5-year financial data: Year 2021: Revenue $3.1B, Net Income $114.3M, EPS $3.08. Year 2022: Revenue $4.1B, Net Income $150.1M, EPS $4.09. Year 2023: Revenue $5.2B, Net Income $143.3M, EPS $3.93. Year 2024: Revenue $7.0B, Net Income $245.9M, EPS $6.82. Year 2025: Revenue $9.1B, Net Income $323.4M, EPS $9.01.
Revenue
Net Income
EPS (right axis)

5-Year Trend Summary: Comfort Systems USA Inc.'s revenue has grown significantly by 196% over the 5-year period, indicating strong business expansion. The most recent EPS of $9.01 reflects profitable operations.

FIX Revenue Growth, EPS Growth & YoY Performance

Revenue Growth
N/A
Year-over-year
Net Income Growth
N/A
Year-over-year
EPS Growth
N/A
Earnings per share
FCF Margin
11.3%
Free cash flow / Revenue

FIX Quarterly Earnings & Performance

Quarterly financial performance data for Comfort Systems USA Inc. including revenue, net income, and earnings per share.
Quarter Revenue Net Income EPS
Q3 2025 $1.8B $146.2M $4.09
Q2 2025 $1.8B $134.0M $3.74
Q1 2025 $1.5B $96.3M $2.69
Q3 2024 $1.4B $105.1M $2.93
Q2 2024 $1.3B $69.5M $1.93
Q1 2024 $1.2B $57.2M $1.59
Q3 2023 $1.1B $61.5M $1.71
Q2 2023 $1.0B $42.2M $1.17

Data sourced from SEC EDGAR 10-Q quarterly filings. Figures may represent quarterly or cumulative values.

Comfort Systems USA Inc. Dividends, Buybacks & Capital Allocation

Operating Cash Flow
$1.2B
Cash generated from operations
Stock Buybacks
$216.0M
Shares repurchased (TTM)
Capital Expenditures
$154.9M
Investment in assets
Dividends Paid
$68.8M
Returned to shareholders

FIX SEC Filings: Latest 10-K & 10-Q Analysis

Access official SEC EDGAR filings for Comfort Systems USA Inc. (CIK: 0001035983)

📋 Recent SEC Filings

Date Form Document Action
Apr 9, 2026 DEF 14A fix014562-def14a.htm View →
Apr 3, 2026 4 xslF345X06/form4-04032026_030411.xml View →
Apr 3, 2026 4 xslF345X06/form4-04032026_030409.xml View →
Apr 3, 2026 4 xslF345X06/form4-04032026_030407.xml View →
Apr 3, 2026 4 xslF345X06/form4-04032026_030405.xml View →

Frequently Asked Questions about FIX

What is the AI rating for FIX?

Comfort Systems USA Inc. (FIX) has a Combined AI Rating of BUY from Claude (STRONG BUY) and ChatGPT (BUY) with 89% combined confidence, based on fundamental analysis of SEC EDGAR filings.

What are FIX's key strengths?

Claude: Revenue growth of 29.5% YoY with improving operational leverage (14.4% operating margin). Exceptional returns on capital: 41.8% ROE and 15.9% ROA demonstrate efficient asset utilization. ChatGPT: Strong top-line growth with healthy 24.1% gross margin and 14.4% operating margin. Excellent financial health driven by $981.9M cash, 0.06x debt/equity, and 145.9x interest coverage.

What are the risks of investing in FIX?

Claude: Rapid 29.5% revenue growth may face headwinds from market saturation or economic slowdown in electrical contracting sector. EPS growth (97.8% YoY) significantly outpacing revenue growth (29.5%) suggests large share buybacks; sustainability dependent on continued margin expansion. ChatGPT: Net income was flat year over year despite 29.5% revenue growth, which may signal mix, cost, or integration pressure. Current ratio of 1.21x leaves less short-term cushion than the balance sheet's low leverage might suggest.

What is FIX's revenue and growth?

Comfort Systems USA Inc. reported revenue of $9.1B.

Does FIX pay dividends?

Comfort Systems USA Inc. pays dividends, with $68.8M distributed to shareholders in the trailing twelve months.

Where can I find FIX SEC filings?

Official SEC filings for Comfort Systems USA Inc. (CIK: 0001035983) including 10-K, 10-Q, and 8-K reports are available on SEC EDGAR.

What is FIX's EPS?

Comfort Systems USA Inc. has a diluted EPS of $28.88.

How is the AI analysis conducted?

Two independent AI systems — Claude (Anthropic) and ChatGPT (OpenAI) — analyze SEC EDGAR filings including 10-K annual reports and 10-Q quarterly reports. Each AI evaluates financial health, profitability ratios, balance sheet strength, and growth metrics. The combined rating reflects both perspectives for balanced insights.

Is FIX a good stock to buy right now?

Based on our AI fundamental analysis in April 2026, Comfort Systems USA Inc. has a BUY rating with 89% confidence. The AI analysis suggests favorable fundamentals based on SEC filings. This is not investment advice.

Is FIX stock overvalued or undervalued?

Valuation metrics for FIX: ROE of 41.8% (sector avg: 10%), net margin of 11.2% (sector avg: 12%). Higher ROE suggests strong returns relative to peers.

Should I buy FIX stock in 2026?

Our dual AI analysis gives Comfort Systems USA Inc. a combined BUY rating for 2026. Revenue is data pending, with profitability at or below sector average. Always conduct your own research.

What is FIX's free cash flow?

Comfort Systems USA Inc.'s operating cash flow is $1.2B, with capital expenditures of $154.9M. FCF margin is 11.3%.

How does FIX compare to other Utilities stocks?

Vs Utilities sector averages: Net margin 11.2% (avg: 12%), ROE 41.8% (avg: 10%), current ratio 1.21 (avg: 0.8).

Why is FIX's return on equity (ROE) so high?

Comfort Systems USA Inc. has a return on equity of 41.8%, significantly above the Utilities sector average of 10%. A high ROE indicates the company is efficient at generating profits from shareholder equity. This is supported by a 11.2% net margin.

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Disclaimer: This analysis is generated by Claude AI (Anthropic) and ChatGPT (OpenAI) based on publicly available SEC EDGAR filings. It does not include stock price data and should not be considered financial advice. All fundamental data is sourced from SEC public domain filings. Always conduct your own research and consult with a qualified financial advisor before making investment decisions.
Data Source: SEC EDGAR | Analysis Date: Mar 25, 2026 | Data as of: 2025-12-31 | Powered by Claude AI