AMERICAN GCR-40 410

This site computes the figure of 264 therms; the registry does not list it. The calculation combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.64 with the DOE test's daily hot-water draw for the high draw pattern. The source is DOE CCD, retrieved 2026-09-19. The model ranks 236th from the lowest energy use among 414 gas tanks at this draw pattern, which places it in the second-highest quarter of its class. The gap of 4 therms from the 260 therms median holds only for that comparison group. It says nothing about other fuels or other draw patterns. The steps behind the calculation 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 registry lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 80 gallons, with a rated volume of 38 gallons. Those values describe supply during the first hour only. The data here does not show whether that supply meets a particular household's peak demand. Because this model uses 4 therms more than the class median of 260 therms, it fits less well for a reader who needs energy use at or below that median. To narrow candidates by fuel, space and size, use the water heater selector.

The running cost is not stated in the text, because it depends on your state's average residential gas price. The page computes it from your ZIP in the cost calculator, using the 264 therms figure. At any gas price, the difference from the class median is 4 therms of gas a year, at the federal test's draw. Your own household's use can differ from that draw, and this page has no measured data on it. The installed price range appears in its own block, with its source and date, as a modeled range and not a quote. To compare this unit with others in its class, you can find a same-class replacement by model number.