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GE GE40S12BLM01

GE GE40S12BLM01 is in the DOE listing as of Oct 19, 2026.

  • Electric storage water heater
  • 2 listed models

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

Its figures are also listed under GE GE40S10BMM01.

Storage volume
40gallons
UEF
0.92Uniform energy factor
First-hour rating
65gallonsHot water in the first hour
See it among every electric storage model

Advertised and certified figures

GE GE40S12BLM01: advertised and certified
GE GE40S12BLM01: advertised and certified Size: advertised 40 gal, certified 40 gal (advertised nominal size, certified storage volume). UEF: advertised 0.92, certified 0.92. First-hour rating: advertised 65 gal, certified 65 gal. Size · advertised nominal size, certified storage volume Advertised 40 gal Certified 40 gal UEF Advertised 0.92 Certified 0.92 First-hour rating Advertised 65 gal Certified 65 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 40 gal, nominal size 40 gal storage volume GE Read Oct 5, 2026
UEF 0.92 0.92 GE Read Oct 5, 2026
First-hour rating 65 gal 65 gal GE Read Oct 5, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
GE40S10BLM01400.926598%Medium
GE40S12BLM01400.926598%Medium

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

Sold as 40 gallons, it holds 40 gallons in the test. Starting full, it gives 65 gallons of hot water in its first hour of use. Its tank holds 40 gallons, so reheating adds 25 gallons during the first hour. Among 477 electric storage models, 66 have a higher first-hour rating. Among electric storage models, the median first-hour rating is 55 gallons.

In the test, 8% of its energy does not reach the hot water (UEF 0.92). Its test simulated a day of medium hot water use (its draw pattern). Its UEF is lower than that of 81 of the 297 electric storage models with its draw pattern. Its UEF is the median for its type and draw pattern. Of the energy spent to reheat water, 98% goes into it (its recovery efficiency).

Its 2 model numbers are GE40S10BLM01 and GE40S12BLM01. Its test figures match those of 2 other basic models. For the full group, see the GE GE40S10BMM01 page.

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.