DoesTheMath

Lennox water heaters

What Lennox has on file with the DOE CCD — as filed, with no rating of the brand itself.

Lennox has 45 basic models on file with the DOE CCD, across 2 heater types. Of the 45 that sit in a class large enough to compare, 17 use less energy a year than their class median. Every model below links to its own page.

By heater type

Counts and ranges as filed. A class median is only used where eight or more models share the class.

Lennox: basic models by heater type
Heater typeModelsUEF rangeBelow class median
A gas tank 24 0.59–0.7 9 of 24
An electric tank 21 0.91–4.1 8 of 21
DOE CCD · 2026-09-19

Every model

Grouped by heater type, alphabetical within each.

An electric tank 21 models
A gas tank 24 models

What this page does not say

Nothing about how long Lennox heaters last, how often they fail or how its warranty compares: no registry this site reads publishes any of it, and this site does not estimate it. The DOE CCD records what each model is certified to do, and that is what this page counts.

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