DoesTheMath

JETGLAS RE2H50S*-***** vs Ruud PRO H50 T2 RH310BM: which uses less energy?

At the medium draw pattern the Ruud PRO H50 T2 RH310BM uses 928 kWh a year and the JETGLAS RE2H50S*-***** 944 — 16 kWh (2%) less, about 162 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
JETGLAS RE2H50S*-***** Ruud PRO H50 T2 RH310BM
UEF (Uniform Energy Factor) 3.44 3.5 (better)
Energy use per year (kWh) 944 928 (better)
First hour rating (gal) 65 67
Rated storage volume (gal) 45 45
Installed cost range $2,989–$4,090 $2,996–$4,150
ENERGY STAR certified yes yes
Refrigerant R-134a, GWP 1430 R-134a, GWP 1430
On the market since 2022-12-01 2020-04-30
DOE CCD · 2026-09-19

What it costs to run

JETGLAS RE2H50S*-*****: 944 kWh a year Ruud PRO H50 T2 RH310BM: 928 kWh a year

JETGLAS RE2H50S*-***** — 944 kWh a year Ruud PRO H50 T2 RH310BM — 928 kWh a year

Ruud PRO H50 T2 RH310BM is 16 kWh a year lower than JETGLAS RE2H50S*-*****.

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.
  • Both are ENERGY STAR certified, which requires a manufacturer warranty of at least six years; the actual term for each model is not published.
  • Time on the market, as filed with ENERGY STAR: the JETGLAS RE2H50S*-***** since 2022-12-01, the Ruud PRO H50 T2 RH310BM since 2020-04-30. A sale date, not a lifespan.

Which should you pick?

  • Pick the Ruud PRO H50 T2 RH310BM if running cost matters most: it uses 16 kWh less a year on the same test.
  • Pick the JETGLAS RE2H50S*-***** if it is the one you can get installed sooner or for less — on the filed figures it has no advantage over the Ruud PRO H50 T2 RH310BM.
  • Neither if your household's busiest hour needs more than 67 gallons of hot water — neither lists more. Check whether a 40-gallon heater is enough.

Each model on its own

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