U.S. CRAFTMASTER GCB-40 4**

The registry does not print the 264 therms figure. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, and the DOE test's daily hot-water draw for the high draw pattern. For this model the UEF is 0.64, taken from the DOE CCD as retrieved on 2026-09-19. Among the 414 models registered as a gas tank at the high draw pattern, it ranks 236th lowest in energy use. The 4 therms gap noted above puts it on the higher-use side of the class median, not at either end of the class. The page on how the annual cost is calculated explains each input and the order in which they are applied.

The high draw pattern stands for 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 78 gallons. Its rated volume is 38 gallons. A plumber or seller checking a match for that kind of household can compare those two figures with the old unit's label. The 264 therms figure does not describe a home that draws less hot water than the test assumes, or more. How far actual use would differ from it is not available here. To look for other models in the same class, use the same-class replacement search by model number.

This text gives no running cost, because it depends on your state's average residential gas price. The page computes it from your ZIP instead, applying that price to the 264 therms test-draw figure. The cost calculator for your own ZIP shows the result. Your household's real gas use and rate are not known to this page, so the result stays tied to the high draw pattern. The installed price range appears in its own block with its source and date. It is a modeled range, not a quote. The registry data behind this page was retrieved on 2026-09-19; changes in the DOE CCD after that date are not reflected here.