Rheem PROG50-40N RH62

The 260 therms figure is calculated by this site and does not come from the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw. For this model the UEF is 0.65, from DOE CCD data retrieved 2026-09-19. There are 414 models registered as a gas tank at the high draw pattern. This model ranks 204th lowest in energy use among them. That places it in the second-lowest quarter of its class, and its figure equals the class median of 260 therms. The steps behind the figure are set out in how the annual cost is calculated.

The high draw pattern describes a larger household, or one where showers and laundry overlap. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 76 gallons. Its rated volume is 48 gallons. The 260 therms figure applies only at the test's daily draw for this pattern. A home that uses less hot water each day than the test assumes falls outside that condition. So does a home that uses more. The registry gives no energy figure for other levels of use, so this page cannot show gas use for a lighter or heavier draw. To compare other gas tank models at the same draw pattern, you can find a same-class replacement by model number.

This text does not give a running cost, because the cost depends on your state's average residential gas price. The page calculates it from your ZIP with the cost calculator on your own ZIP, starting from the 260 therms figure. That result has the same condition as the energy figure: the high draw pattern at the federal test's daily draw. The registry does not record how much hot water your household actually uses each day. A cost based on your real usage is therefore not available. The installed price appears in its own block, with its source and date. It is a modeled range for installation, not a quote, and it is separate from the yearly gas cost.