RELIANCE WATER HEATERS GPVT-50 2**

The 235 therms figure is computed by this site, not taken 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 the high draw pattern. For this model the UEF is 0.72. The source is the DOE CCD, retrieved 2026-09-19, and the steps are set out in how the annual figure is calculated. Among the 414 gas tank models registered at the high draw pattern, this model ranks 50th lowest in energy use. That places it in the lowest quarter of its class. The figure holds only at the federal test's daily draw. Gas use for a household drawing more or less hot water is not available here.

The high draw pattern stands for a larger household, or one where showers and laundry overlap. The 235 therms figure describes that kind of use. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 97 gallons, from a rated volume of 48 gallons. A home whose peak hour needs more than 97 gallons falls outside what the rating covers. A smaller household with lighter use is also outside it, and no energy figure for lighter use is available. To check other units in the same class, use the same-class replacement search by model number. For other fuels or sizes, the water heater selector by fuel, space and size lists registered options.

The running cost is not stated in this text. It depends on your state's average residential gas price, so the page computes it from your ZIP. The input is this model's 235 therms a year at the high draw pattern. The 25 therms gap to the class median carries into cost at your own rate, so the difference in cost is that gas volume priced locally. The cost calculator for your own ZIP shows the result. The installed price range appears in its own block, as a modeled range with its source and date, not a quote. Energy use at other draw patterns and actual household bills are not available from the registry.