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Lennox WHES030L45SN240B****

Lennox WHES030L45SN240B**** is in the DOE listing as of Oct 19, 2026.

  • Electric storage water heater
  • 1 listed model

ENERGY STAR certification does not cover this type of water heater.

Its figures are also listed under AMERICAN STANDARD WATER HEATERS ENS30L-*.

Storage volume
27gallons
UEF
0.93Uniform energy factor
First-hour rating
44gallonsHot water in the first hour
See it among every electric storage model

Advertised and certified figures

Lennox WHES030L45SN240B****: advertised and certified
Lennox WHES030L45SN240B****: advertised and certified Size: advertised 30 gal, certified 27 gal (advertised nominal size, certified storage volume). UEF: advertised 0.93, certified 0.93. First-hour rating: advertised 44 gal, certified 44 gal. Size · advertised nominal size, certified storage volume Advertised 30 gal Certified 27 gal UEF Advertised 0.93 Certified 0.93 First-hour rating Advertised 44 gal Certified 44 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 30 gal, nominal size 27 gal storage volume Lennox Read Oct 5, 2026
UEF 0.93 0.93 Lennox Read Oct 5, 2026
First-hour rating 44 gal 44 gal Lennox Read Oct 5, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
WHES030L45SN240B****270.934498%Low

UEF is the uniform energy factor. A dash means the model has no such figure.

It holds 27 gallons in the test, 3 gallons less than its 30-gallon sold size. Starting full, it gives 44 gallons of hot water in its first hour of use. Its tank holds 27 gallons, so reheating adds 17 gallons during the first hour. Among 477 electric storage models, 392 have a higher first-hour rating. The median electric storage model gives 55 gallons in its first hour.

In tests, 93% of the energy it uses ends up as hot water (UEF 0.93). The daily hot water use in the test, called its draw pattern, was low. Of 157 electric storage models with the same draw pattern, 2 have a higher UEF. A UEF of 0.92 is the median for its type and draw pattern. The water took in 98% of the energy used to reheat it (its recovery efficiency).

All of its test figures are shared by 2 other basic models. Those basic models are sold with AMERICAN STANDARD WATER HEATERS and Ariston as their brand names. You can find the whole group on the page for the AMERICAN STANDARD WATER HEATERS ENS30L-*.

Also listed as

They carry every figure in the table above.

Updated Oct 19, 2026 · Methodology

Not covered

  • Changes to an advertised figure after the date beside it.