JETGLAS RG2D50S*N

The registry lists a UEF, the ratio of hot water delivered to energy used, of 0.68 for this model. The registry does not publish annual therms. This site computed 249 therms from that UEF and the DOE test's daily hot-water draw for the high draw pattern, using DOE CCD data retrieved 2026-09-19. The figure holds only for natural gas and only at that test draw. Among the 414 models registered as a gas tank at this draw pattern, it ranks 164th lowest for energy use, in the second-lowest quarter of its class. The gap to the class median of 260 therms is 11 therms. The data does not show how that gap changes with actual household use.

The high draw pattern describes a larger household, or one where showers and laundry overlap. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 81 gallons for this model, and its rated volume is 47 gallons. Compare those two figures with your own peak-hour demand. The registry data does not say how many people they cover. A household drawing less than the test draw would use fewer therms than 249 therms, and one drawing more would use more. This page has no measured data on real household draw. To check other options by fuel, space and size, use the water heater selector.

The running cost is not written here because it depends on your state's average residential gas price, and no price is assumed. The cost calculator on your ZIP applies your rate to the 249 therms figure. The steps behind that calculation are in the annual cost methodology. The result is only as close as the test draw is to your own use. The modeled installed-cost range in its own block is a modeled range, not a quote. If you need a unit in the same class as RG2D50S*N, you can find a same-class replacement by model number. A 11 therms difference from the class median is a difference in therms per year, not a cost.