AUODGDNT JSN-F01

The registry lists a UEF, the ratio of hot water delivered to energy used, of 0.82 for this model. This site computed the 93 therms figure from that UEF and the DOE test's daily hot-water draw for the low draw pattern. The registry does not publish the annual figure itself. The figure applies only to that test draw and to natural gas, and the DOE CCD data was retrieved on 2026-09-19. The class median is 93 therms, so the difference is 0 therms. At the test draw, this model uses the same energy as the median model among the 10 gas tankless units registered at the low draw pattern. Its rank of 4th lowest places it in the second-lowest quarter of the class for energy use.

The low draw pattern describes a one- or two-person household, so the 93 therms figure applies to a home with that level of hot-water use. It does not describe a larger household or heavier use, and this page does not state a figure for other draw patterns. The maximum flow rate in gallons per minute is 1.9 for this unit. How many fixtures that flow can serve at once is not available in the data used here. If your household or fuel differs from this case, the selector by fuel, space and size lets you narrow the choice before you compare energy figures.

The running cost is not written in the text because it depends on the average residential gas price in your state. The cost calculator on your own ZIP applies that price to the 93 therms figure for this model. The method behind the annual cost explains each step of that calculation. The modeled installed-cost range appears in its own block with its source and date. It is a modeled range, not a quote, and it is not repeated here. To compare against another unit in the same class as these 10 models, you can find a same-class replacement by model number.