DoesTheMath

ARISTON AURES SM 10.5 240V US* vs GE GE11SNHPDG01: which uses less energy?

At the very small draw pattern the ARISTON AURES SM 10.5 240V US* uses 622 kWh a year and the GE GE11SNHPDG01 649 — 27 kWh (4%) less, about 273 kWh over ten years. Both are filed as an electric tankless unit, 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 tankless unit at the very small draw pattern.

Filed and computed figures
ARISTON AURES SM 10.5 240V US* GE GE11SNHPDG01
UEF (Uniform Energy Factor) 0.95 (better) 0.91
Energy use per year (kWh) 622 (better) 649
Max flow (GPM) 1.1 1.1
Installed cost range $1,303–$1,814 $1,292–$1,718
ENERGY STAR certified not matched not matched
DOE CCD · 2026-09-19

What it costs to run

ARISTON AURES SM 10.5 240V US*: 622 kWh a year GE GE11SNHPDG01: 649 kWh a year

ARISTON AURES SM 10.5 240V US* — 622 kWh a year GE GE11SNHPDG01 — 649 kWh a year

ARISTON AURES SM 10.5 240V US* is 27 kWh a year lower than GE GE11SNHPDG01.

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 ARISTON AURES SM 10.5 240V US* if running cost matters most: it uses 27 kWh less a year on the same test.
  • Pick the GE GE11SNHPDG01 if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the ARISTON AURES SM 10.5 240V US*.
  • Neither if you need more than 1.1 GPM at the same time — neither unit lists more. Check how to size a tankless unit by GPM.

Each model on its own

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