DoesTheMath

FRIEDRICH PROP G50-50* RH HE EC3 vs Ruud XG29T12XR60U0: which uses less energy?

At the high draw pattern the FRIEDRICH PROP G50-50* RH HE EC3 uses 192 therms a year and the Ruud XG29T12XR60U0 238 — 46 therms (19%) less, about 461 therms over ten years. Both are filed as a gas tank, so the comparison holds. Enter your ZIP below to price the difference.

Side by side

Compared within one class only: models filed as a gas tank at the high draw pattern.

Filed and computed figures
FRIEDRICH PROP G50-50* RH HE EC3 Ruud XG29T12XR60U0
UEF (Uniform Energy Factor) 0.88 (better) 0.71
Energy use per year (therms) 192 (better) 238
First hour rating (gal) 95 93
Rated storage volume (gal) 50 28
Installed cost range not published not published
ENERGY STAR certified yes not matched
On the market since 2022-11-07 not filed
DOE CCD · 2026-09-19

What it costs to run

FRIEDRICH PROP G50-50* RH HE EC3: 192 therms a year Ruud XG29T12XR60U0: 238 therms a year

FRIEDRICH PROP G50-50* RH HE EC3 — 192 therms a year Ruud XG29T12XR60U0 — 238 therms a year

FRIEDRICH PROP G50-50* RH HE EC3 is 46 therms a year lower than Ruud XG29T12XR60U0.

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 FRIEDRICH PROP G50-50* RH HE EC3 if running cost matters most: it uses 46 therms less a year on the same test.
  • Pick the Ruud XG29T12XR60U0 if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the FRIEDRICH PROP G50-50* RH HE EC3.
  • Neither if your household's busiest hour needs more than 95 gallons of hot water — neither lists more. Check whether a 50-gallon heater is enough.

Each model on its own

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