AMERICAN GUR 40 4**

The figure of 264 therms is not a registry entry. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.64 for this model, and the DOE test's daily hot-water draw for the high draw pattern. It applies to natural gas only. The source is the DOE CCD, retrieved 2026-09-19. The method behind the annual cost is documented separately. Against its class, the model ranks 236th lowest energy use of 414. That places it in the second-highest quarter of its class for energy use, 4 therms above the class median of 260 therms.

The registry lists this model at the high draw pattern, meaning a larger household, or one where showers and laundry overlap. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 83 gallons, and its rated volume is 38 gallons. Whether that covers a particular household's busiest hour is not in the data. A household that draws less hot water than the federal test does not use 264 therms, because the figure is tied to the test's draw. Models ranked ahead of this one use less energy at the same draw pattern. To compare by fuel, space and size, use the water heater selector.

The running cost is not stated in this text. It depends on the state average residential gas price, and this page does not know the reader's rate. The cost calculator on your own ZIP applies that price to 264 therms. The same calculation shows what the 4 therms gap from the class median of 260 therms amounts to at that rate. The installed price range appears in its own block on the page, with its source and date. It is a modeled range, not a quote, and it is not repeated here. If you need a unit in the same class, find a same-class replacement by model number starting from GUR 40 4**.