Is LII or TGEN more undervalued in 2026?

CirclFi compares Lennox International, Inc. (LII) and Tecogen Inc. (TGEN) using 13 institutional-grade valuation models. LII has a Quality of Company score of 8.8/10 while TGEN scores 6.5/10.

Which is a better buy — LII or TGEN?

Compare intrinsic values from 13 independent models against current market prices. CirclFi also calculates Value Trap scores. This is not financial advice — conduct your own analysis.

How do LII and TGEN valuations compare?

LII at $502.16 and TGEN at $6.21 are compared across Bayesian DCF, EPV, EROIC Spread, First Chicago, Markov DDM, and 8 additional models.

LII vs TGEN Valuation Comparison 2026 — Intrinsic Value Analysis

LII

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip

Lennox International, Inc.

Quality

8.8

out of 10

Value Trap

SAFE

Price

$502.16

Last close

Models

12/13

Active

TGEN

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip

Tecogen Inc.

Quality

6.5

out of 10

Value Trap

LOW

Price

$6.21

Last close

Models

11/13

Active

Model-by-Model Comparison

Model	Type	LII Fair Value	LII Upside	TGEN Fair Value	TGEN Upside
Bayesian DCF	Intrinsic	$150.50	-70.0%	$1.19	-80.8%
Earnings Power Value	Intrinsic	$177.29	-64.7%	$1.34	-73.0%
EROIC Spread	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
First Chicago	Scenario	$•••.••	••.•%	$•••.••	••.•%
Markov DDM	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
ML-RIV	Intrinsic	$•••.••	••.•%	$•••.••	••.•%
Dynamic NAV	Asset-Based	$•••.••	••.•%	$•••.••	••.•%
PWERM	Option-Based	$•••.••	••.•%	$•••.••	••.•%
Regime Cross-Sectional	Relative	$•••.••	••.•%	$•••.••	••.•%
Sentiment SOTP	Hybrid	$•••.••	••.•%	$•••.••	••.•%
CUCE Ensemble	Ensemble	$•••.••	••.•%	$•••.••	••.•%
FTNN Topology	Relative	$•••.••	••.•%	$•••.••	••.•%
RCMH-DCF	Intrinsic	$•••.••	••.•%	$•••.••	••.•%

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LII vs TGEN — Which Stock Is More Undervalued?

LII scores higher with a 8.8/10 quality rating vs TGEN's 6.5/10. Both stocks are analyzed daily using SEC EDGAR filings across 13 independent models.

Comparing Lennox International, Inc. (LII) and Tecogen Inc. (TGEN) across 13 institutional-grade valuation models reveals how each company's intrinsic value stacks up against its market price. CirclFi's engine processes SEC EDGAR 10-K and 10-Q filings, FRED macroeconomic data, and GDELT news sentiment to generate independent fair value estimates daily.

LII currently trades at $502.16 with a QOC of 8.8/10, while TGEN trades at $6.21 with a QOC of 6.5/10.

Both companies are analyzed with models spanning intrinsic (Bayesian DCF, EPV), scenario-based (First Chicago), regime-switching (Markov DDM, RCMH-DCF), machine learning (ML-RIV, FTNN Topology), and ensemble methods (CUCE).