BRADFORD WHITE KGWH-150JFN

The registry lists this unit with a UEF, the ratio of hot water delivered to energy used, of 0.98. This site computed the 173 therms figure itself, from that UEF and the DOE test's daily hot-water draw for the high draw pattern. The registry does not state it directly. The figure covers natural gas only and describes the federal test's draw, not a particular home. It sits 9 therms below the class median of 182 therms. Among the 397 models registered as a gas tankless unit at this draw pattern, it ranks 1st lowest, which places it in the lowest quarter of its class. The energy data was retrieved from DOE CCD on 2026-09-19.

The high draw pattern describes a larger household, or one where showers and laundry overlap, so the 173 therms figure fits that kind of use. The listed maximum flow rate in gallons per minute is 4.3. The data here does not say how many fixtures that flow supports, so that is not stated. A home with a different draw pattern cannot use the 173 therms figure, and this page has no energy value for other patterns. The 9 therms gap to the class median is a test-based difference, not a measurement of any installed unit. To compare 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 written in this text because it depends on the average residential gas price in your state. This page computes it from your ZIP, using the 173 therms figure at the high draw pattern. If your household uses hot water differently from that pattern, the result will differ from the actual bill. You can run the same calculation with the cost calculator for your own ZIP. The annual cost methodology explains how the energy figure and the gas price are combined. The modeled installed-cost range appears in its own block on the page, with its source and date, and is not repeated here.