BRADFORD WHITE RTG-K-199N2

The figure of 178 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, which is 0.95 for this model, with the DOE test's daily hot-water draw for the high draw pattern. It applies to natural gas and to that test draw only. A household that uses more or less hot water than the test will use a different amount, and this page has no figure for other draw patterns. The registry data was retrieved from DOE CCD on 2026-09-19. The calculation steps are set out in how the annual cost is calculated.

Among the 397 models registered as a gas tankless unit at the high draw pattern, this model has the 45th lowest energy use, which puts it in the lowest quarter of its class. The class median is 182 therms, and this model sits 4 therms below it. That comparison holds at the test draw only. The unit suits a larger household, or one where showers and laundry overlap, because the figure was produced for that usage. It does not describe a household with a much lighter draw. The maximum flow rate in gallons per minute is 5.4. Whether that covers several fixtures running together in a given home is not something this registry data shows.

The running cost is not written here because it depends on your state's average residential gas price. Multiplying 178 therms by your own rate gives the yearly gas cost at the test draw, and the cost calculator for your own ZIP does this for you. A household whose actual hot-water use differs from the high draw pattern will see a different result. The modeled installed-cost range appears in its own block on the page, with its source and date, and is not a quote. If you need another unit in the same class as RTG-K-199N2, you can find a same-class replacement by model number. This page does not compare the 397 models on price.