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    Lennox (LII) Stock May Be 44% Undervalued After Margin Pressure

    Simply Wall St·10/28/2026 19:22:42
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    Lennox International has seen its share price fall sharply this year, even though the business is still generating substantial cash flows. With that backdrop, the live question for you now is whether the current US$372.05 price tag lines up with what those cash flows are worth on a discounted basis.

    • Over the past 5 years the stock has returned about 29.3%, which puts real weight on whether that performance still matches what the underlying cash generation can support.
    • Recent revenue growth alongside pressure on profit margins and adjusted earnings suggests investors need to think carefully about how much free cash the company can convert and when.
    • If you'd rather focus on earnings, this one's for you. See what Lennox International's 16.3x P/E says about the price.

    The issue now is whether the intrinsic value from a Discounted Cash Flow (DCF) view supports where Lennox International trades today or points to a gap between price and cash flows.

    If you want to stress test how Lennox International’s cash flow question compares with other opportunities, run the same lens across 29 high quality undervalued stocks.

    Is Lennox International a Bargain on Cash Flow?

    The Discounted Cash Flow (DCF) model here focuses on what Lennox International can return to shareholders through future free cash generation. Latest twelve month free cash flow sits at about $713.3 million, and the projections assume that this stream grows over time rather than shrinks, with estimated annual free cash flow moving higher into the early 2030s.

    For a mature industrial business, that profile points to a company that is expected to keep producing sizable cash, even while recent results showed pressure on margins and adjusted earnings. The DCF outcome suggests those future dollars justify a value that is substantially above the current $372.05 share price. The Q3 2026 update, with 10% revenue growth but softer profitability and lower full year guidance, helps explain why the market is hesitant even as the cash flow model points higher. This is exactly the tension that this valuation is flagging for Lennox International. Find out what Lennox International could be worth using our Discounted Cash Flow (DCF) estimate.

    The Lennox International Narrative: What Would Justify Today's Price?

    Narratives pick up where the Lennox International valuation puzzle leaves off by spelling out which assumptions on growth, margins and earnings would need to hold for the stock to be worth materially more or less than today’s price, and they sit on Simply Wall St’s Community page. Each narrative links a specific fair value to a clear story about Lennox International's possible catalysts and pressure points so you can track over time which version of events is actually unfolding.

    One of the top community narratives on Lennox International: 18% undervalued

    "Expansion of parts, accessories and service around the installed base, supported by the outperformance of DuroDyne and Supco and higher parts attachment rates..."

    Discover why this Narrative puts Lennox International at 18% undervalued.

    Lennox International’s valuation still leaves one crucial issue on the table

    Lennox International’s cash flow story is only part of what you need to weigh, because separate checks have raised specific concerns that could matter far more to your downside than the headline valuation alone. Take a closer look at 1 warning sign before settling on a valuation.