Ruud RTG-70DVLN-3

The 206 therms figure 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, with the DOE test's daily hot-water draw for the high pattern. For this model the UEF is 0.82, from the DOE Compliance Certification Database, retrieved on 2026-09-19. The figure holds only at that test draw. A home that uses more or less hot water will use a different amount of gas. This site does not know your household's actual use, so it is not included here. The steps behind the annual 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 this model's maximum flow rate in gallons per minute as 4. The registry data does not say whether 4 covers a given home's fixtures running at once. Among the 397 gas tankless models at the high pattern, this one sits in the second-highest quarter for energy use. Because it is above the class median, more than half of its class uses less gas at the same test draw. A household with lighter hot-water use falls under a different draw pattern, so the 206 therms figure does not describe it. To compare models in the same class, see find a same-class replacement by model number.

The running cost is not stated in this text. It depends on your state's average residential gas price, so the page computes it from your ZIP. Any cost figure scales with the 206 therms of gas at the high pattern's test draw. The 24 therms gap to the 182 therms median is a difference in gas use, not in cost. What that gap costs you depends on your own rate. You can run it in the cost calculator on your own ZIP. The installed price range appears in its own block, with its source and date. It is a modeled installed-cost range for this class, not a quote, and its figures are not restated here.