Ranein RH13K-LPG

The 206 therms figure was computed by this site, not taken from the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for the high draw pattern. The registry lists a UEF of 0.82 for the RH13K-LPG. The underlying data comes from the DOE CCD, retrieved on 2026-09-19. The figure holds only at the federal test's daily draw. A household that uses more or less hot water than the test assumes will use a different amount of gas, and this page has no data on that difference. The steps behind the figure are set out in how the annual cost is calculated.

The high draw pattern describes a larger household, or one where showers and laundry overlap. The registry lists a maximum flow rate in gallons per minute of 5.3 for this unit. Its class holds 397 gas tankless models tested at the high draw pattern, with a median of 182 therms a year. At 24 therms above that median, this unit is in the second-highest quarter of its class for energy use. More than half of its class uses less gas at this pattern. If lower annual gas use is the point you are verifying, other models in the same class can be compared through find a same-class replacement by model number.

The yearly running cost of 206 therms is not stated in this text. It depends on your state's average residential gas price, so the page computes it from your ZIP. You can run that figure in the cost calculator on your own ZIP. The 24 therms gap to the class median converts to cost at that same rate. The installed price range appears in its own block with its source and date. It is a modeled installed-cost range, not a quote. Your household's actual hot-water use is unknown to this page. Your utility's own rate may also differ from the state average used here.