Lennox International LII

Reference table

1. What it is

Lennox International (NYSE: LII), founded 1895 and headquartered in Richardson, TX, is a global manufacturer and distributor of heating, ventilation, air conditioning (HVAC) and refrigeration systems. It sells to homeowners (through contractors and its own parts-and-supplies stores) and to light-commercial and industrial customers. Fiscal year ends December 31. CEO Alok Maskara.

The company now reports two segments (it folded the old standalone Refrigeration and renamed the two survivors during 2025):

Revenue mix (FY2025, from filings):

• Home Comfort Solutions (formerly Residential Heating & Cooling): $3,343.4M (64%) — furnaces, ACs, heat pumps, indoor air quality, replacement parts. This is the cyclical, new-construction-and-replacement-exposed half.
• Building Climate Solutions (formerly Commercial Heating & Cooling): $1,851.9M (36%) — light-commercial unitary HVAC, applied systems, controls, national-account emergency-replacement and service. This is the segment that is outgrowing the other (organic +26% in Q1'26).
• Total FY25 revenue: $5,195.3M, down 2.7% from FY24's $5,341.3M — the dip is entirely a residential-volume story.
• Geography: overwhelmingly US; historical "International" disclosure ran ~$230–250M (well under 5% of sales). This is a domestic North American business — a simplicity strength and a concentration exposure to the US housing/construction cycle.

The two structural tailwinds worth naming: (1) the refrigerant-regulation replacement cycle (the shift to A2L / low-GWP refrigerants forces equipment turnover), and (2) bolt-on M&A (the Duro Dyne and Supco acquisitions, integrated in 2025) that adds ~4 points of revenue growth.

2. The expert thesis — no KB coverage (traceable)

There is no expert coverage of Lennox in the Synthos knowledge base. total_claims = 0; there are zero net-bullish voices and zero cautionary voices. Nothing in this note rests on a distilled expert claim, and — per the Synthos house standard — we will not manufacture conviction where none exists.

What that means for the reader: this verdict is entirely fundamentals- and quant-driven — built from the FMP financials, analyst estimates, the company's own SEC guidance (§9, half-weighted), and our scoring model. The Street's own view is a Hold (10 Buy / 16 Hold / 4 Sell), which is consistent with our Watch. Treat the absence of KB conviction as itself a signal: this is not a name any tracked Synthos expert is currently pounding the table on, in either direction.

3. Synthos scores & the Bull / Base / Bear cases

The one-glance judgment — three scores, 0–10, each anchored to real metrics (not probabilities we can't honestly calibrate):

The three cases (our own scenario model — assumptions shown; each target is a ~12–18-month fair value). We deliberately do not attach probabilities: the base case is by definition the expected path, so a weighted blend would just restate it with false precision. Instead the cases bound the range, and the scores above summarize them.

Synthos fair value = the base case, ~$610 (+7%), with the full $390–$755 span as the honest range. This sits modestly above the Street's $556 consensus but the upside is thin and the downside is real — which is exactly why the verdict is Watch, not Buy. This is a tracked call — the Forecaster Scorecard grades it once it matures.

4. Exponential Potential

Synthos separates compounders (durable high returns on capital) from exponentials (accelerating, multi-baggers-from-here). LII is a high-quality compounder with essentially no exponential profile:

• Forward growth: revenue CAGR FY25→FY30E ~6.2% ($5.20B → $7.02B); EPS CAGR ~10.6% ($22.22 → $36.93 est), aided by margin gains and buybacks more than volume.
• Acceleration (the 2nd derivative) is negative/choppy: revenue fell 2.7% in FY25; the estimate path is +8% FY26E, then decelerating single digits, with an EPS dip penciled for FY29 before FY30 recovers. There is no demand inflection here — it's a mature replacement/construction cyclical.
• Room to run: the North American HVAC/refrigeration TAM is large but finite and mature; Lennox is already a scaled leader. At a ~$20B cap there is no plausible path to a 3–5× re-rating on TAM expansion — the runway is share gains and price/mix, not a new category.
• Reinvestment runway: modest, high-return capex (~$120M/yr, ~2.3% of sales) plus bolt-on M&A. Productive, but not a reinvestment engine that compounds capital exponentially.

Exponential Potential: Low (3/10). Own LII, if at all, for durable ~10% earnings compounding + a fat dividend/buyback, not for a fast multibagger. Honest framing: this is a Core-quality cyclical, categorically not a Degen-tier or next-exponential name.

5. Financials (real numbers — FMP annual/quarterly)

• Revenue: FY25 $5,195.3M, −2.7% (FY24 $5,341.3M, +7.2% on FY23 $4,981.9M). The decline is a residential-volume story; commercial is growing double digits.
• Quarterly trajectory: Q1'25 $1,072.6M → Q2 $1,500.9M → Q3 $1,426.8M → Q4 $1,195.0M → Q1'26 $1,135.1M (+5.8% YoY, helped by acquisitions). Strong seasonality (Q2/Q3 peak cooling season).
• Margins: gross 33.1% TTM, EBITDA 22.1%, operating 19.5%, net 14.9% — very healthy for a manufacturer, and structurally higher than a decade ago after the portfolio simplification.
• Earnings: net income $786.2M FY25 (vs $806.9M FY24 — down slightly on the revenue dip); diluted EPS $22.22 (FY24 $22.54). Q1'26 EPS $3.35.
• Cash flow: operating CF $757.6M, capex −$118.8M, FCF $638.8M FY25 (down from $782M FY24 on a $228M inventory build and a $544M acquisition outlay). FCF/share ~$19.
• Returns on capital (the standout): ROE 72%, ROIC 24%, ROCE 34%, ROA 18% — elite. Caveat: ROE is flattered by a thin equity base — years of buybacks have driven treasury stock to −$4.9B, leaving only ~$1.16B of book equity.
• Balance sheet: total debt $2.06B, net debt $2.03B, net-debt/EBITDA 1.64×, interest coverage ~20×, current ratio 1.57×. Investment-grade and easily serviceable, though leverage rose in FY25 to fund the Duro Dyne/Supco deals (net debt up from $1.07B).

6. Valuation — priced in or room?

Lennox is not cheap, but not egregiously expensive either: 26× trailing EPS, 4.1× sales, 18.7× EV/EBITDA, 30× P/FCF. The bull's defense is that EPS out-grows the multiple: on live consensus the forward P/E is 23× (FY26E) → 21× (FY27E) → ~15× (FY30E) — so the multiple compresses if estimates hit. But two honest caveats temper that:

1. The estimate path is lumpy — consensus pencils an EPS dip in FY29 before FY30 recovers, so the smooth "grow into the multiple" story is not clean.

2. This is a cyclical — paying 26× trailing near what looks like a cycle-recovery bet leaves little margin if housing disappoints; cyclicals de-rate hard when the cycle rolls.

A fair mid-cycle multiple for a high-ROIC HVAC name is ~20–23× forward. Applied to FY27E ~$26.6, that anchors our ~$610 base-case fair value (+7%). Street targets (context): consensus $556, high $650, low $450 — our base sits just above consensus. The FMP letter grade is B (overall score 3/5), dinged specifically on debt-to-equity (1/5) and P/E (2/5) — consistent with "great returns, full price." Not a value buy; a quality-cyclical-at-full-price that we'd rather buy on a pullback.

7. Technicals (from the tech block)

• Trend: up — $570 sits above the 50-DMA ($518.76) and 200-DMA ($510.15), with the 50 above the 200 (golden-cross posture). MACD +16.9 (positive).
• Location: −14.2% off the 52-week high ($664.54) and +30.2% off the 52-week low ($437.87); max drawdown from peak −16.0%. Mid-range, not near highs.
• Momentum: RSI(14) 70.1 — right at the overbought threshold. After a +22.6% three-month run, entry here is stretched; a stretched-entry warning applies.
• Relative strength (the tell): LII is −4.8% over 12 months while SPY is +20.6% and QQQ +30.3% — a laggard over the year despite the recent bounce. It has outrun SPY over 3 months (+22.6% vs +13.7%) but that is a recovery off a weak base, not sustained leadership.
• Read: the short-term trend is up but overbought and off a 12-month laggard base. Technicals argue for patience — wait for RSI to cool or a pullback toward the rising 50-DMA (~$519) rather than chasing at RSI 70.

8. Moat & competitive position

Lennox's moat is real but ordinary-industrial, not wide: (1) a strong brand and installed base in North American residential HVAC, monetized through a captive parts-and-supplies distribution network that drives high-margin replacement/aftermarket revenue; (2) scale and manufacturing efficiency in a consolidated oligopoly; (3) contractor relationships and national-account service in commercial. The offsetting reality: HVAC equipment is a replacement-driven, regulation-cycle, weather-and-construction-sensitive category with capable competitors (Carrier, Trane, Daikin/Goodman) — pricing power is real but bounded, and switching costs sit with contractors more than the OEM.

Peer set (FMP-supplied, market cap): Watsco $16.7B (WSO — the closest HVAC-distribution comp), Carlisle $14.8B, Masco $16.7B, Pentair $12.4B, Snap-on $21.3B, Builders FirstSource $9.1B, AECOM $8.7B, C.H. Robinson $22.4B, Expeditors $21.9B, FTAI Aviation $25.4B. Note: the FMP peer list skews to broad "Industrials/Construction" and includes several non-HVAC names (logistics, tools); the truest read-across is WSO (Watsco) for HVAC distribution and Carrier / Trane (not in this list) for equipment. Against WSO and the building-products peers, LII carries the best returns on capital and the richest quality profile, which the market recognizes with a premium multiple.

9. Management, capital allocation & guidance

• Capital allocation: shareholder-return-heavy. FY25: $501.5M buybacks + $173.0M dividends returned, funded partly by $205M of net new debt and $544M spent on the Duro Dyne/Supco acquisitions. Dividend $5.26/yr (~0.9% yield), payout ~26% — well covered. The aggressive buyback is why book equity is thin and ROE is optically huge; it also amplifies EPS. Reasonable at ~24% ROIC, but leverage ticked up.
• Insider activity: the recent Form 4s are routine director equity awards and a gift (May 2026) — grants and administrative transactions, not open-market discretionary selling. No signal, positive or negative.
• Management's own guidance (half-weighted — their own book): Lennox's Q1'26 earnings release (SEC 8-K/EX-99.1, filed 2026-04-29) gives real, dated forward guidance:

- Full-year 2026 revenue growth ~8% (including ~4 points from completed acquisitions).

- Full-year 2026 EPS $23.50–$25.00 (maintained).

- Full-year 2026 free cash flow $750M–$850M.

- Management's narrative: residential ("Home Comfort") end-markets are stabilizing — Q1 revenue −10% but a sequential improvement from −21% in Q4'25; commercial ("Building Climate") organic +26% with strong national-account and emergency-replacement activity. CEO Maskara frames the strategy as "differentiated growth and bolt-on M&A."

- Honest weighting: this is management talking its own book (half-weight). The guidance reads as a genuine earnings release (revenue, EPS range, FCF range, segment detail) — not boilerplate — so it is usable, but the residential "stabilizing" claim is the thing to verify against the Q2 print.

10. Catalysts & what to watch

• Next earnings: 2026-07-22 (Q2'26; Street EPS $7.64, revenue ~$1.55B). Q2 is the seasonal peak — the key line is Home Comfort (residential) volume: does the "stabilizing" narrative show up as a smaller decline or a return to growth?
• Residential cycle: new-construction and replacement demand trends — the single biggest swing factor for the whole thesis.
• Refrigerant transition: pace of the A2L / low-GWP replacement cycle and any pull-forward/price-cost dynamics.
• Margins: whether price/mix continues to offset input-cost inflation and factory under-absorption (the Q1 margin headwind).
• M&A integration: Duro Dyne / Supco accretion and further bolt-ons.

Thesis tripwires (what would change the call): residential volumes deteriorating rather than stabilizing (would push toward the bear case); EPS guidance cut below the $23.50 floor; net-debt/EBITDA rising materially above ~2× on debt-funded M&A; or, conversely, a decisive residential turn + a pullback in the multiple (which would flip Watch → Buy).

11. Key risks

• Cyclicality (structural): ~64% of revenue is residential HVAC, tied to housing, new construction, and big-ticket replacement — a US-macro-sensitive cycle. This is the defining risk.
• Valuation / de-rating: 26× trailing on a cyclical leaves no cushion; cyclicals compress multiples fast when demand rolls.
• Input-cost & absorption pressure: Q1'26 margins were dinged by inflation and factory under-absorption on lower residential volumes; a prolonged volume slump pressures margins.
• Leverage crept up: net debt rose to $2.03B (1.64× EBITDA) to fund buybacks + M&A; further debt-funded deals would raise the risk profile.
• Thin equity base: aggressive buybacks leave only ~$1.16B book equity — optically great ROE, but limited balance-sheet buffer and a P/B of 16×.
• No expert coverage: zero KB conviction on either side — less independent corroboration than a conviction-track name.
• Technically stretched: RSI 70 near-overbought after a sharp run, on a stock that has lagged the market over 12 months.

12. Verdict, position sizing & monitoring

Watch. Lennox is a genuinely high-quality business — 72% ROE, 33% gross margin, 24% ROIC, a fat replacement/aftermarket franchise, and management guiding to ~8% revenue growth and $23.50–$25.00 EPS in 2026. But three things hold us at Watch rather than Buy: (1) valuation — 26× trailing / 23× forward on a cyclical leaves little margin for error; (2) the cycle isn't confirmed — FY25 revenue fell, residential is still down double digits, and the "stabilizing" story needs the Q2 print to prove it; (3) the entry is technically stretched (RSI 70, a 12-month laggard bouncing). There is no expert conviction in the KB to lean on, and the Street itself is a Hold. Our base-case fair value (~$610, +7%) simply doesn't offer enough upside to justify chasing here.

• Sizing: if owned as a quality-cyclical holding, keep it modest (~2–3%); this is not a table-pounding Buy at $570. A better entry is a pullback toward the rising 50-DMA (~$519) or clear evidence the residential cycle has turned.
• Monitoring: re-underwrite on the tripwires in §10; formal re-score at the 2026-07-22 print. This verdict is logged as a tracked Synthos call as of 2026-07-03 at $570.03.
• Single biggest risk: a housing / new-construction downturn keeping the residential segment soft while the multiple is full.

Provenance & disclosures

• Traceability: 0 KB claims, breadth 0 — this is explicitly a fundamentals-/quant-driven note with no expert conviction, not a conviction-track call. No claim_id is cited because none exists; fabricating one is structurally prohibited.
• Data as-of: fundamentals 2026-03-31 (Q1'26) · estimates & prices 2026-07-02/03 · management guidance from the SEC 8-K/EX-99.1 filed 2026-04-29. Forward figures are analyst consensus (FMP) or management guidance, labeled as estimates.
• Management caveat: the FY2026 guidance in §9 is management's own, self-interested outlook, half-weighted by design.
• Not investment advice. Independent research, educational and informational only, never personalized. Hypothetical/forward figures are labeled; the only performance numbers Synthos will headline are the live, real-money Flagship's.
• Version: 2026-07-03. Prior versions available via the deep-dive version dropdown ("based on the info at the time").