Lennox WHES050T45TD240S****
0.92 UEF DOE CCD · 2026-09-19Grade G: where this UEF sits among the 426 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
An electric tank, medium draw pattern (a typical three- or four-person household, about 55 gallons on a busy morning).
If you are checking the Lennox WHES050T45TD240S****, this electric tank uses 3,531 kWh of electricity a year. That figure applies at the medium draw pattern, the standard daily hot-water usage DOE tests against. It equals its class median of 3,531 kWh, a difference of 0 kWh, and ranks 213th lowest energy use of 426.
Energy use per year
3,531 kWh a year
Computed by this site from the registry's UEF and the federal test's daily hot-water draw for this draw pattern. What it costs depends on the electricity rate where you live.
That is equal to the median of 3,531 kWh for the 426 models registered in the same heater type and draw pattern; it ranks 213 of 426, lowest energy first.
Solid line: this model (3,531 kWh). Dashed line: the class median.
Min 773 kWh Median 3,531 kWh Max 3,569 kWh
What it costs to run where you live
What the registry files
- UEF (Uniform Energy Factor) how much hot water you get for each unit of energy the heater uses
- 0.92 DOE CCD · 2026-09-19 Compared only with other models registered as an electric tank at the medium draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Medium DOE CCD · 2026-09-19
- First Hour Rating how many gallons of hot water the unit can deliver in one hour, starting from a full tank
- 67 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 46 gal DOE CCD · 2026-09-19
What it costs to install
$1,736–$2,053 installed
Not a quote — a modeled range of what installers have charged for this class of unit; your price will vary with labor rates, access, and local code requirements.
Escalation indexes: equipment (BLS PPI) latest available: August 2026; labor (BLS ECI) latest available: April 2026 to June 2026.
NLR REMDB (BLS PPI/ECI escalated) · 2026-04-01Safety record
No CPSC recall names this model.
Checked against the CPSC recall database. CPSC does not publish a model-level match for this product category, so this list is curated by hand from the manufacturer's recall filings.
CPSC · 2026-09-24What these figures mean
How this compares
The closest models in the same class — same fuel, type and draw pattern.
Keep going
How every figure on this page is calculated
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Find what replaces your water heater
Enter the model number off your old unit and see what is on file today, with the yearly cost difference.
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Find a water heater that fits
Three questions — fuel, hot water need, install space — narrow every model on file to the ones that fit.
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What a water heater costs to run
Prices a unit's efficiency against your own utility's filed tariff for your ZIP code.
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Is a 50-gallon water heater enough?
Answered from what models in this size actually file.
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Water heaters
Every model on file with the Department of Energy, by heater type.
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All electric resistance tank water heaters
Electric tanks that file a UEF below 2.0 — heated by elements, not a heat pump.
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Every Lennox model on file
What this brand files, by heater type.
UEF 0.92 · Grade G Price it on your ZIP
The 3,531 kWh figure does not appear in the registry; this site calculated it. It uses two inputs from DOE. The first is the model's UEF, the ratio of hot water delivered to energy used, listed at 0.92. The second is the federal test's daily hot-water draw for the medium draw pattern, which describes a typical household with a busy morning. The UEF comes from the DOE Compliance Certification Database, retrieved 2026-09-19. The annual figure holds only at that test draw. A home that draws more hot water than the medium pattern will use more than 3,531 kWh; a home that draws less will use less. This unit's actual use in any single home is unknown. The method behind the annual energy and cost figures sets out each step.
Sitting at the median, as stated above, means something specific. Models ranked ahead of 213th use less electricity at the same test draw; models ranked behind it use more. The model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 67 gallons. Its rated volume is 46 gallons. Those figures fit a household whose busiest hour stays within 67 gallons of hot water. This rating does not cover a household that regularly needs more than 67 gallons in its first hour. It also does not fit a reader who wants annual energy below 3,531 kWh within the same class. A same-class replacement search by model number lists those models.
The text on this page gives no running cost because the cost depends on your own electricity tariff. Utility rates differ by area, so no single figure would fit every reader. To work it out yourself, multiply 3,531 kWh by your rate per kWh. The result holds only at the medium draw pattern described above. The cost calculator on your own ZIP does this step from your ZIP. The installed price range appears in its own block, with its source and date. That range is a modeled installed cost, not a quote. Neither the running cost nor the installed price changes this model's 3,531 kWh annual figure or its rank of 213th among 426 models.
DOE CCD · 2026-09-19