STATE GPVL-50 2**

This site computed the 235 therms figure; the registry does not publish it. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for the high draw pattern. This model's UEF is 0.72. The annual figure applies only at that test draw, not at any one household's own usage. The registry source is the DOE Compliance Certification Database (CCD), retrieved 2026-09-19. Within its class, the model ranks 50th lowest in energy use of 414, which places it in the lowest quarter for energy use. The steps behind the figure 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. This model was tested against that usage, so its figures describe that kind of home most directly. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 79 gallons. Its rated volume is 49 gallons. The 235 therms figure does not describe a home with lighter daily use than the high pattern. This page's class comparison covers only the high draw pattern, and figures for other patterns are not available here. To compare other fuels, spaces or sizes, use the water heater selector by fuel, space and size. To check another model in the same class, find a same-class replacement by model number.

The text does not state this model's running cost. The cost of 235 therms of natural gas a year depends on the reader's state average residential gas price. The page calculates that cost from the reader's ZIP rather than estimating it here. At the test draw, the model uses 25 therms less than the class median of 260 therms. The value of that difference also depends on the same local rate, so the text does not give it either. The cost calculator for your own ZIP applies that rate to the model's annual figure. The installed-price range on this page sits in its own block, with its source and date. It is a modeled installed-cost range, not a quote.