RELIANCE WATER HEATERS GCRX-55 2**

The 273 therms figure is computed by this site, not by the registry. It combines the model'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. The registry lists a UEF of 0.62 for the GCRX-55 2**. Source data come from the DOE CCD, retrieved 2026-09-19. Among the 414 gas tank models registered at the high draw pattern, this one ranks 367th lowest in energy use. That places it in the highest quarter of its class for energy use. The steps behind these figures are set out in how the annual cost is calculated.

The high draw pattern stands for a larger household, or one where showers and laundry overlap. The 273 therms figure holds only at that pattern's daily test draw. A home that draws more or less hot water will use a different amount, and that amount is not available here. The GCRX-55 2** has a rated volume of 55 gallons. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 83 gallons. A household with smaller daily needs is not what this figure describes. To compare it with other gas tank units at the same draw pattern, use the same-class replacement search by model number.

This text states no running cost for the GCRX-55 2**. Paying for 273 therms of natural gas a year depends on the reader's state average residential gas price. For that reason the page computes the cost from the reader's ZIP rather than naming a figure here. The cost calculator on your own ZIP applies that rate to the high draw pattern figure. Because this model sits 13 therms above its class median, its cost on any single rate follows that same gap in gas use. The installed price range appears in its own block, with its source and date. It is a modeled installed-cost range, not a quote. Filters by fuel, space and size are in the water heater selector.