STATE GUC 40 4**

This site calculated the 264 therms figure; the registry does not list it. The calculation uses the registry's UEF, the ratio of hot water delivered to energy used, and the daily hot-water draw that the DOE test sets for the high draw pattern. The registry lists a UEF of 0.64 for this model. The data comes from DOE CCD and was retrieved on 2026-09-19. The 264 therms result applies only at that test draw. It does not describe this model's gas use at any other daily draw. This page does not have data on how far a household's actual use differs from the test draw. You can read each step of the calculation in how the annual energy and cost figures are calculated.

The high draw pattern fits a larger household, or one where showers and laundry overlap. For that use, the registry gives this model a first hour rating, the gallons of hot water available in the first hour from a full tank, of 83 gallons. Its rated volume is 38 gallons. Among the 414 gas tank models at the high draw pattern, its 264 therms is 4 therms above the 260 therms class median. That puts it in the second-highest quarter of its class for energy use, at 236th lowest. To compare it with other units, use the water heater selector by fuel, space and size. To replace a unit with one from the same class, you can find a same-class replacement by model number.

The data on this page covers only the high draw pattern. This model's energy use at a lower draw is not available here. For a smaller household, 264 therms is therefore not a measured figure for that household. The running cost is not stated in this text. It depends on your state's average residential gas price, so the page calculates it from your ZIP instead of giving one figure for everyone. The cost calculator for your own ZIP applies that rate to 264 therms of natural gas at the high draw pattern. The installed price range appears in a separate block with its source and date. That range comes from a cost model and is not a quote.