Rheem PROG50-38U RH60 EC1*

The 269 therms figure comes from this site's calculation, not from the registry. It uses the registry's UEF, the ratio of hot water delivered to energy used, and the DOE test's daily hot-water draw for the high draw pattern. For this model the UEF is 0.63, from DOE CCD data retrieved 2026-09-19. There are 414 gas tank models registered at the high draw pattern. Ranked from lowest energy use, this model is 320th of 414. That puts it in the highest quarter of its class for energy use. The figure holds only at the federal test's daily draw. The data gives no energy use at any other draw. The steps behind the figure are set out in the method for the annual energy and cost figures.

The high draw pattern describes a larger household, or one where showers and laundry overlap. For that use, this model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 86 gallons. Its rated volume is 48 gallons. A plumber or seller checking a quote can compare those two figures with the household's peak hot-water demand. A reader whose main check is gas use should look at the gap to the median. This model uses 9 therms more a year than the class median of 260 therms. Other gas tank models registered at the high draw pattern can be listed with a same-class replacement search by model number.

The text on this page does not state a running cost. The cost of 269 therms of natural gas a year depends on the reader's state average residential gas price. The page therefore computes it from the reader's ZIP. The running-cost calculator for your own ZIP applies that rate to this model's figure. At any given rate, this model's yearly gas cost is higher than a median model's by the cost of 9 therms. The installed-cost range on this page is a modeled range with its own source and date, not a quote. The registry holds no data on a household's actual hot-water use, so the running cost in a real home is unknown.