U.S. CRAFTMASTER GCR-30R 4**

This site calculated the 185 therms figure. The registry does not publish it. The calculation combines the registry's UEF, the ratio of hot water delivered to energy used, with the daily hot-water draw that the DOE test sets for the medium pattern. This model's UEF is 0.6. The data comes from the DOE CCD, retrieved 2026-09-19. Your household will use a different amount of gas if it draws more or less hot water than the test day. So the figure lets you compare models under the test's conditions. It is not a meter reading from a real home. The method behind the annual energy and cost figures sets out each step, including how the draw pattern enters the calculation.

This unit is compared with the 288 models registered as a gas tank at the medium draw pattern. It ranks 89th lowest for energy use in that group. That rank puts it in the second-lowest quarter of its class. Its position against the class median is given in the summary above and is not repeated here. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 62 gallons. Its rated volume is 29 gallons. The medium pattern stands for a typical mid-size household. The 185 therms figure applies to a home whose daily demand matches that pattern. To compare this model with others in the same class, use the same-class replacement search by model number.

The text on this page does not give a running cost. That cost depends on your state's average residential gas price, so the page works it out from your ZIP. To price the 185 therms of natural gas at your own rate, use the water heater cost calculator for your ZIP. If a household draws much more hot water than the medium pattern, neither the 62-gallon first hour rating nor the annual figure describes its use. This page has no energy figure for that household's actual draw. No installed price range is published for this model. Its ratings lie outside the range the cost database's model was fitted on, and the range is not stretched past it.