Friedrich PRO+G50-40N RH67 PD

It holds 48 gallons in the test, 2 gallons less than its 50-gallon sold size. Over one hour from a full tank, it gave 79 gallons in the test (its first-hour rating). That is 31 gallons more than its tank holds, since it reheats during the hour. In the first hour, 344 of the 763 gas storage models give more hot water. The median gas storage model gives 78 gallons in its first hour.

It was not listed as ENERGY STAR certified on Oct 26, 2026. In the test, 31% of its energy does not reach the hot water (UEF 0.69). In the test, daily hot water use was set to high (its draw pattern). Of 434 gas storage models with the same draw pattern, 151 have a higher UEF and 249 a lower one. A UEF of 0.66 is the median for its type and draw pattern. Of the energy spent to reheat water, 77% goes into it (its recovery efficiency).

All of its test figures are shared by 2 other basic models. Of those, one or more are under the Rheem and Ruud brands. For the full group, see the Rheem PRO+G50-40N RH67 PD.

It may qualify for 2 rebate programs in 2 states.