AMERICAN GCR-50 4**

The registry does not print the 273 therms figure. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.62 for this model. The other input is the DOE test's daily hot-water draw for the high draw pattern. The registry data comes from the DOE CCD, retrieved 2026-09-19. This model ranks 367th for lowest energy use among the 414 gas tank models registered at the high draw pattern. That rank 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 describes a larger household, or one where showers and laundry overlap. At that level of use, the model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 84 gallons. Its rated volume is 48 gallons. The 273 therms figure assumes the test's daily draw for the high pattern only. A household that uses more or less hot water will burn a different amount of gas. This page has no figure for other usage levels, so that amount is unknown here. To compare other gas tank models at the same draw, the water heater selector by fuel, space and size lists them.

The text on this page does not state a yearly running cost. The cost of 273 therms of natural gas depends on your state's average residential gas price. The page works it out from your ZIP in the cost calculator for your own ZIP. That result still assumes the high draw pattern's daily draw and a UEF of 0.62. At any single gas price, the 13 therms gap above the 260 therms median means this model costs more to run than a model at the median. The installed price range sits in its own block on this page, as a modeled range with its source and date. That range is not a quote.