JETGLAS RG2DVMH40T*N

The figure of 191 therms is computed by this site, not published by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.58 with the daily hot-water draw that the DOE test assigns to the medium draw pattern. The fuel is natural gas, and the source is DOE CCD, retrieved 2026-09-19. The value therefore applies only to that test draw. A household that uses more or less hot water than the test assumes will use a different amount of gas, and this page has no data on how large that difference would be. The steps are described in how the annual cost is calculated.

Among the 288 models registered as a gas tank at the medium draw pattern, this model ranks 231st lowest in energy use. Its 191 therms sits 6 therms above the class median of 185 therms, which places it in the highest quarter of its class for energy use. For a reader who cares about low gas use at the test draw, that position is the figure to check. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 51 gallons, and the rated volume is 38 gallons. Those values describe delivery capacity, not energy use, and the registry gives no link between them and the ranking. To compare units by fuel, space and size, use the water heater selector, or look up a same-class replacement by model number.

The running cost is not stated here because it depends on the state average residential gas price, which differs by reader. Multiply the 191 therms by the price per therm that applies to your location to get the yearly cost at the medium draw pattern. The cost calculator on your own ZIP does this with the state average price. To see what the 6 therms above the class median costs, apply the same price to that difference. Either result holds only at the test draw, and an actual bill will differ where actual hot-water use differs. The modeled installed-cost range appears in its own block with its source and date. It is not a quote and is not repeated here.