Ranein RH13K-NG

The registry does not print the 206 therms figure. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, and the DOE test's daily hot-water draw for the high draw pattern. For this model the UEF is 0.82. The source is the DOE CCD, retrieved 2026-09-19. Within its class, the unit ranks 229th lowest in energy use of 397. That places it in the second-highest quarter of its class for energy use. Because it sits above the class median, more than half of the registered class uses less gas at the same test draw. The page on how the annual cost is calculated explains each step of the method.

The high draw pattern describes a larger household, or one where showers and laundry overlap. The 206 therms figure applies only to that level of daily use. The data gives no figure for this model at a lower draw pattern, so that value is not available here. The registry also lists a maximum flow rate in gallons per minute of 5.3 for this unit. Whether that rate covers a given home depends on how many fixtures run at the same time. The registry does not record that detail for any home. Readers who want other gas tankless units at the high draw pattern can find a same-class replacement by model number and compare each unit's rank against the same class.

This text states no running cost for the Ranein RH13K-NG. Cost depends on the reader's state average residential gas price, so the page computes it from the reader's ZIP. The input is the same 206 therms of natural gas at the high draw pattern. Compared with a unit at the class median, the 24 therms of extra gas use raises the yearly cost at any local rate. The size of that gap in money is unknown until a rate is applied. The cost calculator on your own ZIP shows the result for your state. The installed price range appears in its own block with its source and date. It is a modeled installed-cost range, not a quote, and this text does not restate its figures.