DoesTheMath

GE GE40T10BAM02 vs RELIANCE WATER HEATERS HETF-40 1**: which uses less energy?

At the medium draw pattern the RELIANCE WATER HEATERS HETF-40 1** uses 3,493 kWh a year and the GE GE40T10BAM02 3,531 — 38 kWh (1%) less, about 380 kWh over ten years. Both are filed as an electric tank, so the comparison holds. Enter your ZIP below to price the difference.

Side by side

Compared within one class only: models filed as an electric tank at the medium draw pattern.

Filed and computed figures
GE GE40T10BAM02 RELIANCE WATER HEATERS HETF-40 1**
UEF (Uniform Energy Factor) 0.92 0.93 (better)
Energy use per year (kWh) 3,531 3,493 (better)
First hour rating (gal) 63 63
Rated storage volume (gal) 40 36
Installed cost range $1,649–$1,903 $1,597–$2,019
ENERGY STAR certified not matched not matched
DOE CCD · 2026-09-19

What it costs to run

GE GE40T10BAM02: 3,531 kWh a year RELIANCE WATER HEATERS HETF-40 1**: 3,493 kWh a year

GE GE40T10BAM02 — 3,531 kWh a year RELIANCE WATER HEATERS HETF-40 1** — 3,493 kWh a year

RELIANCE WATER HEATERS HETF-40 1** is 38 kWh a year lower than GE GE40T10BAM02.

DOE CCD · 2026-09-19

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Enter your ZIP to price both units on the same rate where you live.

Reliability

Not published: Reliability, failure rates and each model’s actual warranty term.

The registries these figures come from certify energy performance under a federal test; none of them records how long a unit lasts or how often it fails, so this page does not rank the two on reliability.

What is here instead:

  • The filed efficiency, capacity and tank size of both models, side by side below.
  • The actual warranty term is printed in each model’s documentation, not in any registry.

Which should you pick?

  • Pick the RELIANCE WATER HEATERS HETF-40 1** if running cost matters most: it uses 38 kWh less a year on the same test.
  • Pick the GE GE40T10BAM02 if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the RELIANCE WATER HEATERS HETF-40 1**.
  • Neither if your household's busiest hour needs more than 63 gallons of hot water — neither lists more. Check whether a 40-gallon heater is enough.

Each model on its own

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