U.S. CRAFTMASTER GCG-50 4**

The registry does not print the 273 therms figure. This site computed it from two registry-based inputs. The first is the model's UEF, the ratio of hot water delivered to energy used, which is 0.62 for this unit. The second is the DOE test's daily hot-water draw for the high draw pattern. The source data is the DOE CCD, retrieved 2026-09-19. The figure applies only at that test draw. A home that uses more or less hot water than the test assumes will use a different amount of gas. The 367th rank noted above puts this model in the highest quarter of its class for energy use. 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. The 273 therms figure belongs to that level of use and to no other. This model has a first hour rating, the gallons of hot water available in the first hour from a full tank, of 81 gallons. Its rated volume is 48 gallons. Plumbers and sellers can check these against the label and the registry entry. Readers comparing heaters by fuel, space and size can use the water heater selector. This page makes no claim about fit for any specific home.

The 13 therms gap to the class median is for each year at the test draw. For a reader who ranks gas use first, most of the 414 models in this class use less, because this model sits in the highest quarter. To check a same-class model by its model number, use find a same-class replacement. The running cost is not given in this text. It depends on the reader's state average residential gas price, so the page computes it from the reader's ZIP. The cost calculator on your own ZIP applies that rate to 273 therms. The installed price range appears in its own block with its source and date. It is a modeled installed-cost range, not a quote.