BRADFORD WHITE T9800 SE 160

The figure of 178 therms is computed by this site, not by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.95 with the DOE test's daily hot-water draw for the high draw pattern. The source is the DOE CCD, retrieved 2026-09-19. Among the 397 models registered as a gas tankless unit at the high draw pattern, this one has the 45th lowest energy use, which places it in the lowest quarter of its class. The gap to the class median of 182 therms is 4 therms. The method behind the annual figure is documented on its own page.

The registry lists a maximum flow rate in gallons per minute of 4.6 for this model. The energy figure applies only to the high draw pattern, so it fits readers whose use resembles that test. It does not describe a household with a different draw pattern, and such a household should not read 178 therms as its own use. The temperature rise at which 4.6 is reached is not in the data used here, so it is not available on this page. To narrow candidates by fuel, space and size, the water heater selector offers those filters.

The running cost is not written in this text because it depends on the state average residential gas price. Enter a ZIP in the cost calculator and the page prices 178 therms at that rate. The same 178 therms costs different amounts in different states, and the 4 therms gap to the class median is priced at the same rate. The installed-cost range in its own block is a modeled range with its source and date, not a quote. To compare against units in the same class, find a same-class replacement by model number starting from T9800 SE 160. Actual bills also depend on real hot-water use, which is not available in registry data.