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Lennox International Inc. (LII) Fundamental Analysis & AI Grade 2026

LII NYSE Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip DE CIK: 0001069202
Updated This Month • Analysis: May 6, 2026 • SEC Data: 2026-03-31
Combined AI Grade
B
76% Confidence
NEUTRAL
C
78% Conf
A
74% Conf

📊 LII Key Takeaways

Revenue: $1.1B
Net Margin: 10.3%
Free Cash Flow: $-39.4M
Current Ratio: 1.57x
Debt/Equity: 0.94x
EPS: $3.35
AI Grade: C with 78% confidence
Lennox International Inc. (LII) receives a B fundamental grade with 76% confidence from our AI analysis based on SEC 10-K filings. With revenue of $1.1B, net profit margin of 10.3%, and return on equity (ROE) of 9.7%, Lennox International Inc. demonstrates mixed fundamentals in the Market sector. Below is our complete LII stock analysis for 2026.

Is Lennox International Inc. (LII) a Good Investment?

Claude

Lennox generates accounting profits but faces critical cash flow deterioration with negative FCF of -$39.4M, declining revenue (-2.7% YoY), and dangerously low cash reserves relative to $1.1B debt. The weak cash conversion despite positive net income raises sustainability concerns.

ChatGPT

Lennox delivers exceptional profitability and cash generation despite a slight revenue decline, evidenced by a 20% operating margin and a 12% FCF margin. Strong ROE/ROA and high interest coverage suggest durable competitive positioning and disciplined capital use. Near-term growth softness appears cyclical; maintaining margins and cash conversion would support continued fundamental strength.

Lennox International Inc. Key Strengths (LII)

Claude
  • + Solid 14.4% operating margin demonstrates operational efficiency
  • + Interest coverage of 10.8x provides adequate debt service capability
  • + Current ratio of 1.57x supports near-term obligation fulfillment
ChatGPT
  • + Industry-leading operating margin and net margin
  • + Strong free cash flow conversion and double-digit FCF margin
  • + High ROE/ROA with robust interest coverage

LII Stock Risks: Lennox International Inc. Investment Risks

Claude
  • ! Negative free cash flow of -$39.4M signals cash burn despite GAAP profitability
  • ! Revenue declining 2.7% YoY with stalling growth momentum
  • ! Quick ratio of 0.64x and $48.2M cash against $1.1B debt indicates severe liquidity stress
  • ! Operating cash flow only $16.1M on $1.1B revenue suggests working capital deterioration
  • ! Low ROE (9.7%) and ROA (2.7%) indicate poor capital efficiency
ChatGPT
  • ! Cyclical exposure to housing/HVAC replacement driving revenue softness
  • ! Low quick ratio and minimal cash balance increase liquidity sensitivity
  • ! Input cost and regulatory changes could pressure margins

Key Metrics to Watch

Claude
  • * Operating cash flow recovery and working capital normalization
  • * Revenue stabilization with margin defense
  • * Free cash flow path to positive and debt reduction progress
ChatGPT
  • * YoY revenue growth
  • * Gross margin

Lennox International Inc. (LII) Financial Metrics & Key Ratios

Revenue
$1.1B
Net Income
$117.2M
EPS (Diluted)
$3.35
Free Cash Flow
$-39.4M
Total Assets
$4.3B
Cash Position
$48.2M

💡 AI Analyst Insight

Lennox International Inc. presents a mixed fundamental picture. Review the detailed metrics above to form your own investment thesis.

LII Profit Margin, ROE & Profitability Analysis

Gross Margin 30.9%
Operating Margin 14.4%
Net Margin 10.3%
ROE 9.7%
ROA 2.7%
FCF Margin -3.5%

LII vs Market Sector: How Lennox International Inc. Compares

How Lennox International Inc. compares to Market sector averages

Net Margin
LII 10.3%
vs
Sector Avg 12.0%
LII Sector
ROE
LII 9.7%
vs
Sector Avg 15.0%
LII Sector
Current Ratio
LII 1.6x
vs
Sector Avg 1.8x
LII Sector
Debt/Equity
LII 0.9x
vs
Sector Avg 0.7x
LII Sector

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

Is Lennox International Inc. Stock Overvalued? LII Valuation Analysis 2026

Based on fundamental analysis, Lennox International Inc. has mixed fundamental signals relative to the Market sector in 2026.

Return on Equity
9.7%
Sector avg: 15%
Net Profit Margin
10.3%
Sector avg: 12%
Revenue Growth
N/A
Year-over-year
Debt/Equity
0.94x
Sector avg: 0.7x

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.

Lennox International Inc. Balance Sheet: LII Debt, Cash & Liquidity

Current Ratio
1.57x
Quick Ratio
0.64x
Debt/Equity
0.94x
Debt/Assets
71.7%
Interest Coverage
10.76x
Long-term Debt
$1.1B

LII Revenue & Earnings Growth: 5-Year Financial Trend

LII 5-year financial data: Year 2021: Revenue $4.2B, Net Income $408.7M, EPS $10.38. Year 2022: Revenue $4.7B, Net Income $356.3M, EPS $9.24. Year 2023: Revenue $5.0B, Net Income $464.0M, EPS $12.39. Year 2024: Revenue $5.3B, Net Income $497.1M, EPS $13.88. Year 2025: Revenue $5.3B, Net Income $591.2M, EPS $16.58.
Revenue
Net Income
EPS (right axis)

5-Year Trend Summary: Lennox International Inc.'s revenue has grown significantly by 27% over the 5-year period, indicating strong business expansion. The most recent EPS of $16.58 reflects profitable operations.

LII 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
-3.5%
Free cash flow / Revenue

LII Quarterly Earnings & Performance

Quarterly financial performance data for Lennox International Inc. including revenue, net income, and earnings per share.
Quarter Revenue Net Income EPS
Q1 2026 $1.1B $117.2M $3.35
Q3 2025 $1.4B $239.0M $6.68
Q2 2025 $1.5B $245.9M $6.87
Q1 2025 $1.0B $120.3M $3.37
Q3 2024 $1.4B $130.4M $3.65
Q2 2024 $1.4B $217.2M $6.10
Q1 2024 $1.0B $98.0M $2.75
Q3 2023 $1.2B $130.4M $3.65

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

Lennox International Inc. Dividends, Buybacks & Capital Allocation

Operating Cash Flow
$16.1M
Cash generated from operations
Stock Buybacks
$19.5M
Shares repurchased (TTM)
Capital Expenditures
$55.5M
Investment in assets
Dividends Paid
$45.2M
Returned to shareholders

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

Access official SEC EDGAR filings for Lennox International Inc. (CIK: 0001069202)

📋 Recent SEC Filings

Date Form Document Action
May 26, 2026 4 xslF345X06/wk-form4_1779825398.xml View →
May 26, 2026 4 xslF345X06/wk-form4_1779825351.xml View →
May 26, 2026 4 xslF345X06/wk-form4_1779825309.xml View →
May 26, 2026 4 xslF345X06/wk-form4_1779825240.xml View →
May 26, 2026 4 xslF345X06/wk-form4_1779825203.xml View →

Frequently Asked Questions about LII

What is the AI rating for LII?

Lennox International Inc. (LII) has a Combined AI Grade of B from Claude (C) and ChatGPT (A) with 76% combined confidence, based on fundamental analysis of SEC EDGAR filings.

What are LII's key strengths?

Claude: Solid 14.4% operating margin demonstrates operational efficiency. Interest coverage of 10.8x provides adequate debt service capability. ChatGPT: Industry-leading operating margin and net margin. Strong free cash flow conversion and double-digit FCF margin.

What are the risks of investing in LII?

Claude: Negative free cash flow of -$39.4M signals cash burn despite GAAP profitability. Revenue declining 2.7% YoY with stalling growth momentum. ChatGPT: Cyclical exposure to housing/HVAC replacement driving revenue softness. Low quick ratio and minimal cash balance increase liquidity sensitivity.

What is LII's revenue and growth?

Lennox International Inc. reported revenue of $1.1B.

Does LII pay dividends?

Lennox International Inc. pays dividends, with $45.2M distributed to shareholders in the trailing twelve months.

Where can I find LII SEC filings?

Official SEC filings for Lennox International Inc. (CIK: 0001069202) including 10-K, 10-Q, and 8-K reports are available on SEC EDGAR.

What is LII's EPS?

Lennox International Inc. has a diluted EPS of $3.35.

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 grade reflects both perspectives for balanced insights.

What is LII's fundamental grade?

Based on our AI fundamental analysis in May 2026, Lennox International Inc. has a B grade with 76% confidence. Review the strengths and risks sections above for full context. This is not investment advice.

Is LII stock overvalued or undervalued?

Valuation metrics for LII: ROE of 9.7% (sector avg: 15%), net margin of 10.3% (sector avg: 12%). Compare these metrics with sector averages to assess valuation.

What is LII's AI grade for 2026?

Our dual AI analysis gives Lennox International Inc. a combined B grade for 2026. Revenue is data pending, with profitability at or below sector average. Always conduct your own research.

What is LII's free cash flow?

Lennox International Inc.'s operating cash flow is $16.1M, with capital expenditures of $55.5M. FCF margin is -3.5%.

How does LII compare to other Market stocks?

Vs Default sector averages: Net margin 10.3% (avg: 12%), ROE 9.7% (avg: 15%), current ratio 1.57 (avg: 1.8).

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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: May 6, 2026 | Data as of: 2026-03-31 | Powered by Claude AI