GASLAND JSLG44-26VE1(2")

The figure of 184 therms is not a registry entry. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.92 for this model, and from the DOE test's daily hot-water draw for the high draw pattern. It applies to natural gas at that test draw only. The source is DOE CCD, retrieved 2026-09-19. Among the 397 models registered as a gas tankless unit at the high draw pattern, this one is 207th lowest in energy use. That puts it in the second-highest quarter of its class for energy use, 2 therms above the class median of 182 therms.

The high draw pattern describes a larger household, or one where showers and laundry overlap. That is the only usage this figure describes. The unit's maximum flow rate in gallons per minute is 4.1, as registered. This page does not say whether that flow meets the peak demand of a particular home, because peak demand is not in the data. Households with lighter use will draw less hot water than the federal test assumes, so 184 therms is not a forecast for them. A figure for other draw patterns is not available for this model on this page. To narrow units 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. Multiplying 184 therms by your own rate gives the cost at the test draw, and the cost calculator does this from your ZIP. The steps are set out in how the annual cost is calculated. Because this model sits 2 therms above the class median of 182 therms, the difference from a median unit in its class is that gap multiplied by your price. Actual use in your home may differ from the test draw, and this page has no measured figure for it.