Richmond PROG50-40N RH62

It holds 48 gallons in the test, 2 gallons less than its 50-gallon sold size. Starting full, it gives 76 gallons of hot water in its first hour of use. That is 28 gallons more than its tank holds, since it reheats during the hour. Among 763 gas storage models, 429 have a higher first-hour rating. The median gas storage model gives 78 gallons in the first hour of the test.

On Oct 26, 2026, this heater was not listed as ENERGY STAR certified. In tests, 65% of the energy it uses ends up as hot water (UEF 0.65). In the test, daily hot water use was set to high (its draw pattern). Its UEF is lower than that of 225 of the 434 gas storage models with its draw pattern. On its draw pattern, the median gas storage UEF is 0.66. When it reheats water in the test, 81% of the energy it uses ends up in the water.

All 4 of its model numbers carry the same certified figures. There are 3 more basic models with the same test figures. Those basic models are sold with Friedrich, Rheem, and Ruud as their brand names. For the full group, see the Rheem PROG50-40N RH62 page.