BRADFORD WHITE RTG-K-160N2

The figure of 178 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 0.95 for this model. The second input is the daily hot-water draw that the DOE test sets for the high draw pattern. The registry data comes from the DOE CCD, retrieved 2026-09-19. The result describes the federal test's draw and not the draw in any particular home. If a household uses more or less hot water than the test assumes, its gas use will differ. This page has no measured field data for this unit, so the size of that difference is unknown.

Among the 397 models registered as a gas tankless unit at the high draw pattern, this unit sits 4 therms below the class median of 182 therms. Its rank of 45th lowest of 397 puts it in the lowest quarter of its class for energy use. The high draw pattern means a larger household, or one where showers and laundry overlap. For that kind of use, the test draw is the closest match. It fits less well for a household with a lower daily draw, and the water heater selector filters by fuel, space and size. The maximum flow rate in gallons per minute is 4.6; the registry data does not show whether that covers your simultaneous fixtures. To compare against a same-class unit, find a replacement by model number.

Running cost is not stated in this text because it depends on your state average residential gas price. The cost calculator applies that price, taken from your ZIP, to 178 therms of natural gas at the high draw pattern. The 4 therms gap to the class median of 182 therms converts to cost at the same rate. A price that differs from the state average will move the result. The steps behind the calculation are described in how the annual cost is calculated. A modeled installed-cost range appears in its own block on this page, with its source and date, and is not repeated here.